BACKGROUND OF THE INVENTION (a) Field of the Invention
The present invention relates to a new and distinct hybrid variety of Poa arachnifera Torr.×Poa pratensis L. that has been designated as ‘HB 128’ bluegrass.
(b) Description of Related Art
A Poa arachnifera×Poa pratensis hybrid designated ‘HB 129’ bluegrass having the same female parents as those employed in breeding the present ‘HB 128’ bluegrass has been disclosed in U.S. Plant Pat. No. 18,467, issued Jan. 29, 2008. Also, a Poa arachnifera×Poa pratensis hybrid designated ‘Reveille’ has been disclosed in PVP Certificate No. 9800337.
SUMMARY OF THE VARIETY ‘HB 128’ bluegrass is the result of a single plant selected from the progeny of Texas bluegrass (Poa arachnifera Torr.) female plant ‘10-10’ (seed parent), with cv. ‘Geronimo’ Kentucky bluegrass (pollen parent)(Poa pratensis L.) cross for perfect flowers, apomixis and turfgrass performance characteristics in the F1 generation.
Texas bluegrass female plant ‘10-10’ is an unpatented, unreleased plant selected and maintained for its tiller density, turf quality and the lack of male reproductive organs. The cv. ‘Geronimo’ is an unpatented, released Kentucky bluegrass of European origin from Mommersteeg International, Vlijmen, the Netherlands. ‘HB 128’ morphologically possesses both female and male bearing structures (pistils and stamens), whereas the female parent ‘10-10’ morphologically possesses only female bearing structures (pistils) and is void of male flowering structures (stamens).
Although the ‘HB 128’ and ‘HB 129’ are derived from the same parent plants, genetic variations between these species are virtually inevitable. During sexual reproduction, the genome of each parent divides resulting in two different genomes for both the female Texas bluegrass parent and two different genomes for the male parent ‘Geronimo’. Therefore, during the cross, four different combinations are possible. In addition, Geronimo is composed of a number of strains. See Grass Varieties of The United States, Handbook No. 110 rev, 1994, page 233 and the description of ‘Geronimo’ under the “Method of Breeding” section, which is incorporated by reference herein. Thus, even though the parents are the same, progeny are not going to receive the same set of genomes; the result is genomes that are split and unaligned.
As a result of this breeding, a distinct variety was selected, produced and asexually propagated by rhizomes, tillers and disseminules. The highly apomictic seed of ‘HB 128’ bluegrass was produced first at Gervais, Oreg. This seed was used to plant turf performance evaluation trials and later, seed production fields.
The seed of ‘HB 128’ has been found to be stable. Asexual production of ‘HB 128’ initially was performed at Gervais, Oreg. by propagules (tillers and rhizomes) and by disseminules (modified caryopses produced by apomixis), and has consistently produced progeny plants indistinguishable from the first generation asexual reproductions of the instant plant. The apomixis level of ‘HB128’ is approximately 99.0%. The apomixis level was determined by examining field planting of ‘HB 128’ in one year of rating for apomictic origin and from disseminules harvested over four growing seasons from field grown plants in Oregon.
‘HB 128’ has a number of highly desirable characteristics, including a high level of seedling vigor and rapid stand establishment. ‘HB 128’ has an upright leafy turf type, medium leaf texture, a medium dark green color, and less than average leaf glaucosity which can be maintained throughout the entire growing season. ‘HB 128’ demonstrates early spring greenup and growth under mild winter conditions. ‘HB 128’ has an aggressive, spreading habit.
‘HB 128’ has a medium to high seed yield potential in the Kentucky bluegrass seed production region of the northwestern United States and has shown the potential for economic seed production not seen in other Poa arachnifera×Poa pratensis hybrids.
In comparison with the ‘Reveille’ hybrid, ‘HB 128’ has demonstrated relatively rapid germination and emergence in fall sowings. In comparison with ‘HB 129’, ‘HB 128’ is a darker green color, shows better tolerance to foliar disease, is quicker to spring greenup and has a more rapid germination and establishment.
Texas bluegrass is a vigorous sod-forming perennial native in the Southeastern and Southern Plains States. Plants grow up to 3 feet on strong soil, with numerous leaves 6 to 12 inches long and 0.025 inch wide. The grass grows throughout the winter producing abundant, nutritious pasture which is highly palatable. This is a valuable species where native, but seeding is difficult. The species is dioecious, with male and female plants. It produces only limited quantities of seed which is covered with woolly hairs that are difficult to remove. Consequently, establishment of stands for agricultural use is limited. Accordingly, Texas bluegrass exhibits similar problems to those encountered with Reveille which are overcome by the present ‘HB 128’ hybrid.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an ‘HB 128’ panicle;
FIG. 2 is an ‘HB 128’ seed; and
FIG. 3 is an ‘HB 128’ plant shortly after completing anthesis.
DETAILED DESCRIPTION OF THE VARIETY ‘HB 128’ Texas bluegrass×Kentucky bluegrass (Poa arachnifera L.×Poa pratensis L.) hybrid is perennial with creeping rhizomes forming a dense turf. When plants grown over winter in the field and grown undisturbed by clipping, the culms are semi-erect averaging 62.6 cm in length. See Table 7 below. The vegetative leaf averages 8.6 cm in length. See Table 16 below. Flag leaf length averages 5.65 cm in length, 4.4 mm in width and has a sheath length of 13.4 cm. See Tables 19, 20 and 23 below. The flag leaf ligule averages 1.9 mm in length and has more than average hairs on ligule than other varieties. See Table 30 below. The panicle averages 10.1 cm in length and 10.3 cm in width. See Tables 34 and 35 below. The lowest whorl of the panicle averages 4.4 branches, the third whorl averages 3.7 branches, and the peduncle averages 30.4 cm in length. See Tables 42, 48 and 49 below.
‘HB 128’ produces inflorescences relatively early compared with Kentucky bluegrasses.
Comparisons of ‘HB 128’ were made with other hybrid bluegrass varieties as well as Texas and Kentucky bluegrasses in three nurseries (designated #1–#3) in Gervais, Oreg. See Tables 1–60 below. Each nursery contained a different soil type (e.g., having different pHs) and were planted in different years.
Comparisons of ‘HB 128’ were also made with various Kentucky bluegrasses in turf plantings in California, Oregon and Texas. See Tables 61–66 below.
TABLE 1
Comparison of heading dates (Julian) of ‘HB-128’ and Kentucky and
Texas bluegrass cultivars planted in nursery #3.
Variety Growing Season #1 Growing Season #2
‘HB-128’ 133.2 119.1
‘HB-129’ 133.4 119.6
‘HB-130’ 133.1 119.4
‘HB-328’ 135.4 118.3
‘HB-329’ 135.6 116.1
‘Geronimo’ 127.6 119.4
‘TX51-90’ 127.1 93.0
‘TX49-90’ 123.7 106.1
‘Ascot’ 135.8 124.7
‘Midnight’ 143.3 137.0
‘Reveille’ 130.8 111.8
‘Kelly’ 138.7 128.0
LSD (P = .05) 4.0 4.2
TABLE 2
Comparison of heading dates (Julian) of ‘HB-128’ and Kentucky and
Texas bluegrass cultivars planted in nursery #1.
Variety Growing Season #1 Growing Season #2
‘HB-128’ 105.7 114.0
‘HB-129’ 108.0 115.0
‘HB-130’ 105.0 115.0
‘Abbey’ 108.3 112.7
‘HB 329’ 114.3 105.0
‘Ascot’ 109.7 113.3
‘Geronimo’ 105.0 114.0
‘TX 19-88’ 119.5 94.5
‘TX 46-90’ 113.0 94.0
TX 4-88’ 103.0 94.0
LSD (P = .05) 5.6 3.4
TABLE 3
Comparison of anthesis dates (Julian) of ‘HB-128’ and Kentucky and
Texas bluegrass cultivars planted in nursery #3.
Variety Growing Season #1 Growing Season #2
‘HB-128’ 138.9 132.3
‘HB-129’ 138.4 132.2
‘HB-130’ 140.8 132.6
‘HB-328’ 143.5 134.8
‘HB-329’ 142.7 131.2
‘Geronimo’ 136.5 133.6
‘TX51-90’ 138.5 124.8
‘TX49-90’ 139.0 128.3
‘Ascot’ 141.1 134.3
‘Midnight’ 148.7 143.5
‘Reveille’ 146.4 135.3
‘Kelly’ 145.5 137.4
LSD (P = .05) 3.6 3.3
TABLE 4
Comparison of heading and anthesis dates (Julian) of ‘HB-128’ and
Kentucky and Texas bluegrass cultivars planted in nursery #2.
Variety Heading Date Anthesis Date
‘HB-128’ 122.0 138.3
‘HB-129’ 119.5 138.0
‘HB-130’ 121.5 140.8
‘HB-328’ 118.4 135.6
‘HB 329’ 123.0 144.8
‘Reveille’ 115.8 141.4
Geronimo’ 121.6 139.9
‘Ascot’ 123.7 140.5
“Midnight 142.3 148.2
‘Buckingham’ 124.5 141.8
‘TX 51-91’ 116.2 139.7
‘TX 39-88’ 121.4
TX 49-90’ 119.2 139.5
‘Kelly’ 130.8 143.4
LSD (p = .05) 4.7 5.0
TABLE 5
Comparison of Anther Color of ‘HB-128’ and Kentucky and Texas
bluegrass cultivars planted in nursery #3.
(1 = Purple, 2 = Yellow, 3 = Brown, 4 = Blue, and 5 = Black)
Variety Growing Season #1 Growing Season #2
‘HB-128’ 1.8 1.3
‘HB-129’ 1.8 2.1
‘HB-130’ 1.6 1.9
‘HB-328’ 1.8 3.4
‘HB-329’ 1.8 2.4
‘Geronimo’ 1.4 2.0
‘TX51-90’ 2.0 2.0
‘TX49-90’ 2.0 1.9
‘Ascot’ 1.6 3.2
‘Midnight’ 1.0 2.0
‘Reveille’ 1.8 2.0
‘Kelly’ 1.7 2.9
LSD (p = .05) 0.4 1.3
TABLE 6
Comparison of field plant height (cm) of ‘HB-128’ and Kentucky and
Texas bluegrass cultivars grown in nursery #3.
Variety Growing Season #1 Growing Season #2
‘HB-128’ 54.6 57.4
‘HB-129’ 57.2 58.1
‘HB-130’ 54.9 57.3
‘HB-328’ 36.7 41.0
‘HB-329’ 37.9 46.0
‘Geronimo’ 54.7 59.5
‘TX51-90’ 49.6 71.2
‘TX49-90’ 46.9 69.7
‘Ascot’ 32.0 30.7
‘Midnight’ 36.6
‘Reveille’ 54.9 71.9
‘Kelly’ 43.0 27.2
LSD (P = .05) 6.5 7.0
TABLE 7
Comparison of length of harvested culms of ‘HB-128’ and Kentucky
and Texas bluegrass cultivars planted in nursery #3.
Culm Length (cm)
Variety Growing Season #1 Growing Season #2
‘HB-128’ 61.2 64.1
‘HB-129’ 62.6 62.9
‘HB-130’ 61.0 64.4
‘HB-328’ 44.9 62.4
‘HB-329’ 36.1 58.9
‘Geronimo’ 58.5 56.5
‘TX51-90’ 55.9 72.4
‘TX49-90’ 49.8 74.7
‘Ascot’ 42.7 49.9
‘Midnight’ 47.1 54.6
‘Reveille’ 62.3 74.3
‘Kelly’ 48.9 54.9
LSD (P = .05) 5.4 5.4
TABLE 8
Comparison plant height in the field and the height of harvested culms
of ‘HB-128’ and Kentucky and Texas bluegrass cultivars planted in
nursery #2.
Height of
Variety Plant Height - Field (cm) Harvested Culms (cm)
‘HB-128’ 54.5 58.5
‘HB-129’ 58.3 64.8
‘HB-130’ 54.6 63.0
‘HB-328’ 40.4 55.7
‘HB 329’ 35.8 49.5
‘Reveille’ 51.6 62.6
Geronimo’ 56.9 67.6
‘Ascot’ 38.2 52.4
‘Midnight’ 29.7 51.8
‘Buckingham’ 48.2 62.4
‘TX 51-91’ 44.5 49.1
‘TX 39-88’ 56.8 56.8
TX 49-90’ 52.6 63.7
‘Kelly’ 38.0 54.9
LSD (P = .05) 8.4 7.2
TABLE 9
Comparison of the Distance (cm) from Basil Node to Tiller Leaf Node
of ‘HB-128’ and Kentucky and Texas bluegrass cultivars planted in
nursery #3.
Variety Growing Season #1 Growing Season #2
‘HB-128’ 5.7 10.3
‘HB-129’ 6.1 9.5
‘HB-130’ 5.8 8.7
‘HB-328’ 3.6 9.0
‘HB-329’ 2.1 3.8
‘Geronimo’ 4.9 9.7
‘TX51-90’ 0.5 3.1
‘TX49-90’ 1.0 3.6
‘Ascot’ 2.9 4.8
‘Midnight’ 5.3 9.3
‘Reveille’ 1.8 4.7
‘Kelly’ 4.4 6.6
LSD (P = .05) 1.4 2.4
TABLE 10
Comparison of the distance (cm) from basal node to the flag leaf node
for ‘HB-128’ and Kentucky and Texas bluegrass cultivars planted in
nursery #3.
Variety Growing Season #1 Growing Season #2
‘HB-128’ 17.2 26.3
‘HB-129’ 21.4 23.7
‘HB-130’ 18.7 24.1
‘HB-328’ 11.9 22.8
‘HB-329’ 8.5 16.0
‘Geronimo’ 16.3 22.7
‘TX51-90’ 5.2 13.9
‘TX49-90’ 8.3 19.5
‘Ascot’ 10.5 11.7
‘Midnight’ 8.4 19.0
‘Reveille’ 12.2 21.1
‘Kelly’ 13.1 16.2
LSD (p = .05) 3.6 5.0
TABLE 11
Comparison of the number of nodes on flowering culms of ‘HB-128’
and Kentucky and Texas bluegrass cultivars planted in nursery #3.
Variety Growing Season #1 Growing Season #2
‘HB-128’ 4.1 5.5
‘HB-129’ 4.3 4.9
‘HB-130’ 4.3 4.9
‘HB-328’ 3.7 5.0
‘HB-329’ 3.0 4.6
‘Geronimo’ 4.8 5.5
‘TX51-90’ 2.3 3.8
‘TX49-90’ 2.4 3.5
‘Ascot’ 3.7 4.8
‘Midnight’ 4.5 5.9
‘Reveille’ 3.2 3.1
‘Kelly’ 4.2 5.1
LSD (p = .05) 0.7 0.7
TABLE 12
Comparison of the number of nodes on flowering culm for ‘HB-128’
and Kentucky and Texas bluegrass cultivars planted at nursery #2.
Variety Growing Season
‘HB-128’ 4.1
‘HB-129’ 4.5
‘HB-130’ 4.4
‘HB-328’ 3.0
‘HB 329’ 3.1
‘Reveille’ 2.8
Geronimo’ 4.7
‘Ascot’ 4.1
‘Midnight’ 4.5
‘Buckingham’ 4.6
‘TX 51-91’ 2.2
‘TX 39-88’ 2.1
TX 49-90’ 2.4
‘Kelly’ 4.1
LSD (P = .05) 1.1
TABLE 13
Comparison of the number of nodes on flowering culms for ‘HB-128’
and Kentucky and Texas bluegrass cultivars planted in nursery #1.
Variety Growing Season
‘HB-128’ 4.9
‘HB-129’ 4.7
‘HB-130’ 3.9
‘Abbey’ 4.1
‘HB 329’ 4.2
‘Ascot’ 4.8
‘Geronimo’ 4.1
‘TX 19-88’ 3.8
‘TX 46-90’ 3.4
TX 4-88’ 4.1
LSD (p = .05) 0.9
TABLE 14
Comparison of plant growth habit of ‘HB-128’ and Kentucky and
Texas bluegrass cultivars planted in nursery #3. (1 = Prostrate, 2 =
Semi-prostrate, 3 = Erect growth habit).
Variety Growing Season
‘HB-128’ 1.93
‘HB-129’ 2.00
‘HB-130’ 2.00
‘HB-328’ 1.07
‘HB-329’ 2.00
‘Geronimo’ 1.67
‘TX51-90’ 3.00
‘TX49-90’ 3.00
‘Ascot’ 1.00
‘Midnight’ 1.10
‘Reveille’ 3.00
‘Kelly’ 1.23
LSD (P = .05) 0.3
TABLE 15
Comparison of plant leaf tissue color of ‘HB 128’ and other
bluegrass plants planted in nursery #3 (based on Munsell color
charts for plant tissue of hue/value/chroma).
←Lighter Green to Darker Green →
Variety 7.5GY 4/6 2.5G 4/4 2.5G 4/6 5G 4/4
‘HB 128’ 0% 79% 14% 7%
‘HB 129’ 47% 13% 0% 40%
‘HB 130’ 0% 57% 29% 0%
*This table shows that ‘HB 128’ is darker green than ‘HB 129’ based on color charts.
TABLE 16
Comparison of vegetative leaf length (cm) of ‘HB-128’ and Kentucky
and Texas bluegrass cultivars planted in nursery #3.
Variety Growing Season #1 Growing Season #2
‘HB-128’ 8.3 8.8
‘HB-129’ 5.5 9.3
‘HB-130’ 8.1 10.3
‘HB-328’ 7.2 10.6
‘HB-329’ 6.5 9.7
‘Geronimo’ 8.3 9.8
‘TX51-90’ 13.2 15.6
‘TX49-90’ 7.9 16.6
‘Ascot’ 6.5 7.87
‘Midnight’ 8.0 11.6
‘Reveille’ 10.7 14.0
‘Kelly’ 7.1 9.2
LSD (P = .05) 2.0 2.7
TABLE 17
Comparison of vegetative leaf length (cm) and width (mm) of ‘HB-128’
and Kentucky and Texas bluegrass cultivars planted in nursery #2.
Vegetative Vegetative
Variety Leaf Length (cm) Leaf Width (mm)
‘HB-128’ 7.7 3.9
‘HB-129’ 9.4 4.6
‘HB-130’ 9.0 4.6
‘HB-328’ 7.8 4.1
‘HB 329’ 9.4 4.9
‘Reveille’ 9.2 3.0
Geronimo’ 9.1 4.6
‘Ascot’ 8.6 3.7
‘Midnight’ 7.6 4.0
‘Buckingham’ 10.2 5.1
‘TX 51-91’ 9.1 3.6
‘TX 39-88’ 9.0 4.6
TX 49-90’ 12.3 5.9
‘Kelly’ 9.8 3.9
LSD (P = .05) 3.3 1.0
TABLE 18
Comparison of flag leaf length (cm) for ‘HB-128’ and Kentucky and
Texas bluegrass cultivars planted in nursery #3.
Variety Growing Season #1 Growing Season #2
‘HB-128’ 5.9 5.4
‘HB-129’ 5.9 5.9
‘HB-130’ 5.8 6.7
‘HB-328’ 4.7 7.4
‘HB-329’ 5.0 6.7
‘Geronimo’ 5.7 6.0
‘TX5l-90’ 11.1 15.7
‘TX49-90’ 6.8 14.0
‘Ascot’ 4.3 5.5
‘Midnight’ 5.8 8.1
‘Reveille’ 9.5 13.1
‘Kelly’ 4.4 6.9
LSD (p = .05) 1.6 2.1
TABLE 19
Comparison of the flag leaf width (mm) of ‘HB-128’ and Kentucky and
Texas bluegrass cultivars planted in nursery #3.
Variety Growing Season #1 Growing Season #2
‘HB-128’ 4.6 4.2
‘HB-129’ 4.5 4.0
‘HB-130’ 4.6 3.3
‘HB-328’ 3.8 3.8
‘HB-329’ 4.1 3.3
‘Geronimo’ 5.0 3.0
‘TX51-90’ 4.9 4.5
‘TX49-90’ 5.1 4.8
‘Ascot’ 4.0 3.6
‘Midnight’ 3.6 3.7
‘Reveille’ 4.1 3.1
‘Kelly’ 4.2 4.0
LSD (P = .05) 0.6 0.8
TABLE 20
Flag leaf length (cm) and width (mm) of ‘HB-128’ and Kentucky and
Texas bluegrass cultivars planted in nursery #2.
Variety Flag Leaf Length (cm) Flag Leaf Width (mm)
‘HB-128’ 5.1 3.3
‘HB-129’ 7.2 4.0
‘HB-130’ 6.5 4.0
‘HB-328’ 6.8 3.7
‘HB 329’ 5.8 3.6
‘Reveille’ 7.6 3.2
Geronimo’ 6.7 4.2
‘Ascot’ 5.9 3.2
‘Midnight’ 5.0 3.1
‘Buckingham’ 6.2 4.2
‘TX 51-91’ 7.3 3.8
‘TX 39-88’ 8.1 4.6
TX 49-90’ 9.0 5.3
‘Kelly’ 6.1 3.6
LSD (P = .05) 2.6 1.2
TABLE 21
Comparison of green flag leaf thickness (mm) of ‘HB-128’ and
Kentucky and Texas bluegrass cultivars planted in nursery #3.
Variety Growing Season
‘HB-128’ 0.197
‘HB-129’ 0.180
‘HB-130’ 0.183
‘HB-328’ 0.197
‘HB-329’ 0.217
‘Geronimo’ 0.193
‘TX51-90’ 0.243
‘TX49-90’ 0.247
‘Ascot’ 0.193
‘Reveille’ 0.210
‘Kelly’ 0.198
LSD (P = .05) 0.040
TABLE 22
Comparison of dried flag leaf thickness (mm) of ‘HB-128’ and
Kentucky and Texas bluegrass planted in nursery #2.
Variety Growing Season
‘HB-128’ 0.01689
‘HB-129’ 0.01491
‘HB-130’ 0.01452
‘HB-328’ 0.02015
‘HB 329’ 0.01819
‘Reveille’ 0.02074
‘Geronimo’ 0.01637
‘Ascot’ 0.01659
‘Midnight’ 0.01452
‘Buckingham’ 0.01896
‘TX 51-91’ 0.02618
‘TX 39-88’ 0.01985
‘TX 49-90’ 0.02311
‘Kelly’ 0.01630
LSD (P = .05) 0.0033
TABLE 23
Comparison of flag leaf sheath length (cm) of ‘HB128’ and
Kentucky and Texas bluegrass cultivars planted in nursery #3.
Variety Growing Season #1 Growing Season #2
‘HB-128’ 12.7 14.1
‘HB-129’ 13.2 15.6
‘HB-130’ 13.1 15.5
‘HB-328’ 10.9 15.5
‘HB-329’ 10.2 14.2
‘Geronimo’ 12.3 16.3
‘TX51-90’ 15.0 17.9
‘TX49-90’ 10.5 15.5
‘Ascot’ 9.5 13.7
‘Midnight’ 9.1 15.0
‘Reveille’ 15.0 17.0
‘Kelly’ 10.8 15.7
LSD (P = .05) 1.4 2.1
TABLE 24
Flag leaf sheath length (cm) of ‘HB-128’ and Kentucky and Texas
bluegrass cultivars planted in nursery #2.
Variety Growing Season
‘HB-128’ 13.7
‘HB-129’ 15.5
‘HB-130’ 15.3
‘HB-328’ 13.1
‘HB 329’ 12.9
‘Reveille’ 16.4
‘Geronimo’ 15.3
‘Ascot’ 13.3
‘Midnight’ 11.2
‘Buckingham’ 14.0
‘TX 51-91’ 11.4
‘TX 39-88’ 14.9
‘TX 49-90’ 14.8
‘Kelly’ 14.4
LSD (P = .05) 2.6
TABLE 25
Comparison of hairs on flag leaf sheath margin of ‘HB-128’ and
Kentucky and Texas bluegrass cultivars planted in nursery #3.
(1 = Absent or 2 = Present).
Variety Growing Season #1 Growing Season #2
‘HB-128’ 1.0 1.20
‘HB-129’ 1.0 1.10
‘HB-130’ 1.0 1.13
‘HB-328’ 1.0 1.30
‘HB-329’ 1.0 1.13
‘Geronimo’ 1.0 1.20
‘TX51-90’ 1.0 1.00
‘TX49-90’ 1.0 1.00
‘Ascot’ 1.0 1.32
‘Midnight’ 1.0 n/a
‘Reveille’ 1.0 1.00
‘Kelly’ 1.0 1.72
LSD (P = .05) 0.1 0.25
TABLE 26
Comparison of margin roughness of flag leaf sheath of ‘HB128’ and
Kentucky and Texas bluegrass cultivars planted in nursery #3
(1 = Smooth or 2 = Rough).
Variety Growing Season #1 Growing Season #2
‘HB-128’ 1.5 1.0
‘HB-129’ 1.7 1.0
‘HB-130’ 1.7 1.0
‘HB-328’ 1.6 1.0
‘HB-329’ 1.5 1.0
‘Geronimo’ 1.7 1.0
‘TX51-90’ 1.3 1.0
‘TX49-90’ 1.4 1.1
‘Ascot’ 1.7 1.0
‘Midnight’ 1.7 n/a
‘Reveille’ 1.3 1.0
‘Kelly’ 1.4 1.0
LSD (P = .05) 0.33 0.11
TABLE 27
Comparison of surface roughness of leaf sheath of ‘HB-128’ and
Kentucky and Texas bluegrass cultivars planted in nursery #3
(1 = Smooth or 2 = Rough).
Variety Growing Season #1 Growing Season #2
‘HB-128’ 1.5 1.00
‘HB-129’ 1.6 1.00
‘HB-130’ 1.5 1.00
‘HB-328’ 1.7 1.00
‘HB-329’ 1.3 1.07
‘Geronimo’ 1.5 1.00
‘TX51-90’ 1.3 1.00
‘TX49-90’ 1.4 1.00
‘Ascot’ 1.7 1.00
‘Midnight’ 1.5 n/a
‘Reveille’ 1.1 1.00
‘Kelly’ 1.6 1.00
LSD (P = .05) 0.3 0.1
TABLE 28
Comparison of leaf sheath glaucosity of ‘HB-128’ and Kentucky and
Texas bluegrass cultivars planted in nursery #3.
(1 = Glaucosity absent or 2 = Glaucosity Present)
Variety Growing Season
‘HB-128’ 1.2
‘HB-129’ 1.4
‘HB-130’ 1.1
‘HB-328’ 1.2
‘HB-329’ 1.5
‘Geronimo’ 1.1
‘TX51-90’ 1.2
‘TX49-90’ 1.4
‘Ascot’ 1.3
‘Midnight’ 1.0
‘Reveille’ 1.1
‘Kelly’ 1.5
LSD (p = .05) 0.35
TABLE 29
Comparison of hairs on both side of collar margin of ‘HB-128’ and
Kentucky and Texas bluegrass cultivars planted in nursery #3
(1 = hairs absent or 2 = hairs present).
Variety Growing Season #1 Growing Season #2
‘HB-128’ 1.0 1.0
‘HB-129’ 1.0 1.0
‘HB-130’ 1.0 1.0
‘HB-328’ 1.0 1.2
‘HB-329’ 1.0 1.0
‘Geronimo’ 1.0 1.0
‘TX51-90’ 1.0 1.0
‘TX49-90’ 1.0 1.0
‘Ascot’ 1.0 1.3
‘Midnight’ 1.0 n/a
‘Reveille’ 1.0 1.0
‘Kelly’ 1.0 1.6
LSD (P = .05) 0.00 0.15
TABLE 30
Comparison of ligule length (mm) of ‘HB-128’ and Kentucky and
Texas bluegrass cultivars planted in nursery #3.
Variety Growing Season
‘HB-128’ 1.9
‘HB-129’ 1.7
‘HB-130’ 1.8
‘HB-328’ 2.0
‘HB-329’ 2.0
‘Geronimo’ 1.9
‘TX51-90’ 2.0
‘TX49-90’ 2.6
‘Ascot’ 2.2
‘Midnight’ n/a
‘Reveille’ 3.0
‘Kelly’ 1.9
LSD (P = .05) 0.4
TABLE 31
Comparison of ligule length (mm) of ‘HB-128’ and Kentucky and
Texas bluegrass cultivars planted in nursery #2.
Variety Growing Season
‘HB-128’ 1.4
‘HB-129’ 1.3
‘HB-130’ 1.7
‘HB-328’ 2.4
‘HB 329’ 2.2
‘Reveille’ 2.3
‘Geronimo’ 1.7
‘Ascot’ 2.0
‘Midnight’ 0.8
‘Buckingham’ 2.4
‘TX 51-91’ 1.6
‘TX 39-88’ 2.7
‘TX 49-90’ 2.0
‘Kelly’ 2.1
LSD (p = .05) 0.7
TABLE 32
Comparison of hairs on ligule of ‘HB-128’ and Kentucky and Texas
bluegrass cultivars planted in nursery #2.
(9 = many hairs and 1 = none)
Variety Growing Season
‘HB-128’ 5.8
‘HB-129’ 5.8
‘HB-130’ 4.5
‘HB-328’ 5.1
‘HB 329’ 2.8
‘Reveille’ 0.9
‘Geronimo’ 7.1
‘Ascot’ 5.6
‘Midnight’ 3.9
‘Buckingham’ 8.1
‘TX 51-91’ n/a
‘TX 39-88’ 0.1
TX 49-90’ n/a
‘Kelly’ 6.3
LSD (P = .05) 1.9
TABLE 33
Comparison of hairs on ligule of ‘HB-128’ and Kentucky and Texas
bluegrass cultivars planted in nursery #3.
(1 = hairs absent or 2 = hairs present).
Variety Growing Season #1 Growing Season #2
‘HB-128’ 1.0 1.5
‘HB-129’ 1.0 1.1
‘HB-130’ 1.0 1.2
‘HB-328’ 1.0 1.2
‘HB-329’ 1.0 1.1
‘Geronimo’ 1.0 1.3
‘TX51-90’ 1.0 1.0
‘TX49-90’ 1.0 1.0
‘Ascot’ 1.0 1.5
‘Midnight’ 1.0 n/a
‘Reveille’ 1.0 1.0
‘Kelly’ 1.0 1.8
LSD (P = .05) 0.00 0.37
TABLE 34
Comparison of panicle length (cm) of ‘HB-128’ and Kentucky and
Texas bluegrass cultivars planted in nursery #3.
Variety Growing Season #1 Growing Season #2
‘HB-128’ 9.9 10.2
‘HB-129’ 9.8 10.2
‘HB-130’ 9.7 11.3
‘HB-328’ 8.7 11.9
‘HB-329’ 7.6 10.1
‘Geronimo’ 10.0 10.8
‘TX51-90’ 12.6 14.7
‘TX49-90’ 8.6 11.9
‘Ascot’ 7.8 9.2
‘Midnight’ 8.2 11.4
‘Reveille’ 11.9 14.3
‘Kelly’ 8.1 10.7
LSD (P = .05) 1.1 1.8
TABLE 35
Comparison of panicle width (cm) of ‘HB-128’ and Kentucky and
Texas bluegrass cultivars planted in nursery #3.
Variety Growing Season #1 Growing Season #2
‘HB-128’ 10.4 10.2
‘HB-129’ 9.9 10.2
‘HB-130’ 10.3 10.7
‘HB-328’ 8.7 11.1
‘HB-329’ 7.7 9.3
‘Geronimo’ 10.S 10.4
‘TXS1-90’ 10.6 10.3
‘TX49-90’ 7.0 8.4
‘Ascot’ 7.1 9.1
‘Midnight’ 7.9 11.0
‘Reveille’ 10.0 10.5
‘Kelly’ 8.3 11.0
LSD (p = .05) 1.3 1.5
TABLE 36
Comparison of panicle length and width of ‘HB-128’ and Kentucky and
Texas bluegrass cultivars planted in nursery #2.
Variety Panicle Length (cm) Panicle Width (cm)
‘HB-128’ 12.2 9.8
‘HB-129’ 10.5 10.3
‘HB-130’ 10.7 10.8
‘HB-328’ 10.7 9.7
‘HB 329’ 8.8 7.9
‘Reveille’ 10.9 9.1
Geronimo’ 11.1 11.4
‘Ascot’ 9.3 8.9
‘Midnight’ 7.8 7.9
‘Buckingham’ 11.5 10.3
‘TX 51-91’ 9.7 8.8
‘TX 39-88’ 10.7 8.5
TX 49-90’ 8.7 6.8
‘Kelly’ 9.8 9.4
LSD (P = .05) 2.3 1.8
TABLE 37
Comparison of panicle length and width of ‘HB-128’ and Kentucky and
Texas bluegrass cultivars planted in nursery #1.
Variety Panicle Length (cm) Panicle Width (cm)
‘HB-128’ 8.9 7.9
‘HB-129’ 9.2 8.4
‘HB-130’ 9.3 8.5
‘Abbey’ 12.5 6.9
‘HB 329’ 8.6 6.9
‘Ascot’ 7.6 7.0
‘Geronimo’ 8.9 8.1
‘TX 19-88’ 13.1 9.7
‘TX 46-90’ 13.5 9.5
TX 4-88’ 13.7 9.2
LSD (P = .05) 2.7 1.2
TABLE 38
Comparison of panicle habit of ‘HS-128’ and Kentucky and Texas
bluegrass cultivars planted in nursery #3. (1 = Nodding or 2 =
Upright).
Variety Growing Season
‘HS-128’ 1.0
‘HS-129’ 1.1
‘HS-130’ 1.1
‘HS-328’ 1.2
‘HS-329’ 1.4
‘Geronimo’ 1.1
‘TX51-90’ 1.3
‘TX49-90’ 1.9
‘Ascot’ 1.2
‘Midnight’ 1.1
‘Reveille’ 1.9
‘Kelly’ 1.5
LSD (P = .05) 0.4
TABLE 39
Comparison of panicle color of ‘HB-128’ and Kentucky and Texas
bluegrass cultivars planted in nursery #3. (1 = not red or 2 = red).
Variety Growing Season
‘HB-128’ 1.0
‘HB-129’ 1.0
‘HB-130’ 1.0
‘HB-328’ 1.0
‘HB-329’ 1.1
‘Geronimo’ 1.0
‘TXS1-90’ 1.2
‘TX49-90’ 1.1
‘Ascot’ 1.1
‘Midnight’ 1.0
‘Reveille’ 1.0
‘Kelly’ 1.0
LSD (P = .05) 0.2
The ‘HB-128’ panicle color is described by rating panicle color either as an expression absence or presence of a shade of red. A rating of 1=no expression of any shade of red on the panicle. A rating of 2=an expression a visual shade of red on the panicle when the plant is at or near the 50% flowering stage. This rating system is described in form ST-470(02-06) of Plant Variety Protection Office for Kentucky bluegrass.
TABLE 40
Comparison of panicle shape of ‘HB-128’ and Kentucky and Texas
bluegrass cultivars planted in nursery #2.
Variety % Open % Intermediate % Compact
‘HB-128’ 98.3 1.6 0.0
‘HB-129’ 96.8 3.2 0.0
‘HB-130’ 100.0 0.0 0.0
‘HB-328’ 98.3 1.6 0.0
‘HB 329’ 94.4 5.6 0.0
‘Reveille’ 27.0 59.8 13.1
Geronimo’ 100.0 0.0 0.0
‘Ascot’ 98.3 1.6 0.0
‘Midnight’ 100.0 0.0 0.0
‘Buckingham’ 100.0 0.0 0.0
‘TX 51-91’ 1.8 23.2 74.9
‘TX 39-88’ 1.8 13.5 84.5
TX 49-90’ 1.8 23.9 74.2
‘Kelly’ 98.4 1.6 0.0
LSD (P = .05) 12.8 15.3 10.1
TABLE 41
Comparison of panicle type of ‘HB-12B’ and Kentucky and Texas
bluegrass cultivars planted in nursery #3. (1 = open, 2 = intermediate,
or 3 = compact panicle).
Variety Growing Season
‘HB-12B’ 1.0
‘HB-129’ 1.0
‘HB-130’ 1.0
‘HB-32B’ 1.1
‘HB-329’ 1.1
‘Geronimo’ 1.0
‘TX51-90’ 2.7
‘TX49-90’ 2.9
‘Ascot’ 1.0
‘Midnight’ 1.0
‘Reveille’ 2.8
‘Kelly’ 1.0
LSD (p = .05) 0.2
TABLE 42
Comparison of peduncle length (cm) of ‘HB-128’ and Kentucky and
Texas bluegrass cultivars planted in nursery #3.
Variety Growing Season #1 Growing Season #2
‘HB-128’ 33.1 27.6
‘HB-129’ 32.7 28.8
‘HB-130’ 32.2 28.7
‘HB-328’ 24.4 30.0
‘HB-329’ 19.9 29.1
‘Geronimo’ 29.0 25.6
‘TX51-90’ 36.9 43.6
‘TX49-90’ 34.4 46.0
‘Ascot’ 24.3 29.7
‘Midnight’ 27.4 24.0
‘Reveille’ 37.8 37.3
‘Kelly’ 26.4 27.7
LSD (P = .05) 3.8 4.4
TABLE 44
Comparison of panicle branch attitude of ‘HB-128’ and Kentucky
and Texas bluegrass cultivars planted in nursery #3. (1 = drooping, 2 =
horizontal, 3 = ascending branch attitude)
Variety Growing Season
‘HB-128’ 2.0
‘HB-129’ 1.9
‘HB-130’ 2.0
‘HB-328’ 2.0
‘HB-329’ 2.0
‘Geronimo’ 1.8
‘TXS1-90’ 2.7
‘TX49-90’ 2.9
‘Ascot’ 1.9
‘Midnight’ 2.0
‘Reveille’ 3.0
‘Kelly’ 2.3
LSD (P = .05) 0.4
TABLE 45
Comparison of visual estimate of the amount of cotton webbing at
base of lemma and on lemma nerves, after hand rubbing of panicles
prior to seed conditioning of ‘HB-128’ and Kentucky and Texas
bluegrass planted in nursery #3. (9 = most cotton webbing, 1 = no
cotton webbing).
Variety Growing Season
‘HB-128’ 3.7
‘HB-129’ 3.3
‘HB-130’ 2.8
‘HB-328’ 4.7
‘HB-329’ 7.7
‘Geronimo’ 2.8
‘TX51-90’ 8.0
‘TX49-90’ 6.5
‘Ascot’ 3.7
‘Midnight’ 2.8
‘Reveille’ 7.3
‘Kelly’ 4.3
LSD (P = .05) 1.0
TABLE 46
Comparison of the number of whorls in the panicles of ‘HB-128’ and
Kentucky and Texas bluegrass cultivars planted in nursery #2.
Variety Growing Season
‘HB-128’ 8.0
‘HB-129’ 8.0
‘HB-130’ 8.2
‘HB-328’ 8.8
‘HB 329’ 8.1
‘Reveille’ 7.6
Geronimo’ 8.4
‘Ascot’ 7.2
‘Midnight’ 7.2
‘Buckingham’ 8.4
‘TX 51-91’ 7.0
‘TX 39-88’ 7.0
TX 49-90’ 7.7
‘Kelly’ 8.2
LSD (p = .05) 1.3
TABLE 47
Comparison of the number whorls in the panicles of ‘HB-128’ and
Kentucky and Texas bluegrass cultivars planted in nursery #1.
Variety Growing Season
‘HB-128’ 9.1
‘HB-129’ 8.6
‘HB-130’ 8.9
‘Abbey’ 9.3
‘HB 329’ 8.1
‘Ascot’ 7.0
‘Geronimo’ 8.9
‘TX 19-88’ n/a
‘TX 46-90’ 10.0
TX 4-88’ 10.0
LSD (P = .05) 0.5
TABLE 48
Comparison of the number of branches in the lowest whorl of the
panicle of ‘HB-128’ and Kentucky and Texas bluegrass cultivars
planted in nursery #3.
Variety Growing Season #1 Growing Season #2
‘HB-128’ 4.3 4.4
‘HB-129’ 4.4 4.4
‘HB-130’ 4.5 4.6
‘HB-328’ 4.3 4.9
‘HB-329’ 3.8 4.3
‘Geronimo’ 4.5 4.6
‘TX51-90’ 4.7 5.9
‘TX49-90’ 3.8 6.0
‘Ascot’ 2.7 4.6
‘Midnight’ 3.8 4.7
‘Reveille’ 6.4 7.3
‘Kelly’ 4.5 5.2
LSD (P = .05) 1.0 0.8
TABLE 49
Comparison of the number of branches in the third whorl of the panicle
of ‘HB-128’ and Kentucky and Texas bluegrass cultivars planted in
nursery #3.
Variety Growing Season #1 Growing Season #2
‘HB-128’ 3.5 3.9
‘HB-129’ 3.5 3.8
‘HB-130’ 4.6 4.1
‘HB-328’ 3.3 4.2
‘HB-329’ 2.7 3.7
‘Geronimo’ 3.6 3.9
‘TX51-90’ 4.2 5.6
‘TX49-90’ 3.3 5.7
‘Ascot’ 3.1 4.2
‘Midnight’ 3.33 3.9
‘Reveille’ 5.3 5.5
‘Kelly’ 4.0 4.2
LSD (P = .05) 0.8 0.5
TABLE 50
Comparison of the number of branches in the first and third whorl of
the panicle of ‘HB-128’ and Kentucky and Texas bluegrass cultivars
planted in nursery #1.
Variety First Whorl Third Whorl
‘HB-128’ 4.1 3.3
‘HB-129’ 4.0 3.3
‘HB-130’ 3.9 3.2
‘Abbey’ 3.1 3.1
‘HB 329’ 4.4 3.8
‘Ascot’ 2.8 2.4
‘Geronimo’ 4.0 3.5
‘TX 19-88’ 5.4 n/a
‘TX 46-90’ 4.9 4.9
TX 4-88’ 5.7 6.4
LSD (p = .05) 0.8 0.8
TABLE 51
Comparison of the number of branches in the first and third whorl of
the panicle of ‘HB-128’ and Kentucky and Texas bluegrass cultivars
planted in nursery #2.
Variety First Whorl Third Whorl
‘HB-128’ 4.2 3.3
‘HB-129’ 4.0 3.2
‘HB-130’ 4.3 3.3
‘HB-328’ 4.3 2.9
‘HB 329’ 3.6 2.1
‘Reveille’ 5.2 3.2
Geronimo’ 4.4 3.1
‘Ascot’ 3.8 2.2
‘Midnight’ 4.1 2.5
‘Buckingham’ 3.2 2.3
‘TX 51-91’ 4.3 2.9
‘TX 39-88’ 2.3 2.8
TX 49-90’ 3.6 3.2
‘Kelly’ 4.6 3.1
LSD (P = .05) 0.9 1.1
TABLE 52
Comparison of spikelet length (mm) in the first and third whorl of
panicle of ‘HB 128’ and Kentucky and Texas bluegrass cultivars
planted in nursery #2.
Variety First Whorl Third Whorl
‘HB-128’ 6.9 6.8
‘HB-129’ 7.6 7.1
‘HB-130’ 6.4 6.7
‘HB-328’ 6.6 6.8
‘HB 329’ 6.2 6.5
‘Reveille’ 6.1 6.4
Geronimo’ 5.5 6.3
‘Ascot’ 5.6 5.8
‘Midnight’ 5.6 6.3
‘Buckingham’ 6.9 6.9
‘TX 51-91’ 7.5 7.4
‘TX 39-88’ 8.6 8.5
TX 49-90’ 9.7 9.7
‘Kelly’ 6.3 6.1
LSD (P = .05) 1.7 1.7
TABLE 53
Comparison of the spikelet width (mm) in first and third whorl of the
panicle of ‘HB-128’ and Kentucky and Texas bluegrass cultivars
planted in nursery #2.
Variety First Whorl Third Whorl
‘HB-128’ 3.8 4.0
‘HB-129’ 4.5 4.0
‘HB-130’ 4.2 3.6
‘HB-328’ 5.2 4.4
‘HB 329’ 4.3 3.8
‘Reveille’ 4.0 4.2
Geronimo’ 4.2 4.0
‘Ascot’ 4.4 4.3
‘Midnight’ 2.5 3.0
‘Buckingham’ 4.6 4.7
‘TX 51-91’ 7.1 6.9
‘TX 39-88’ 5.9 5.7
TX 49-90’ 8.2 8.0
‘Kelly’ 4.4 4.3
LSD (P = .05) 1.9 1.6
TABLE 54
Comparison of the length (mm) of the glume #1 in the first and third
whorl of ‘HB-128’ and Kentucky and Texas bluegrass cultivars planted
in nursery #2.
#1 Glume Length in #1 Glume Length in
Variety First Whorl (mm) Third Whorl (mm)
‘HB-128’ 3.1 2.9
‘HB-129’ 3.1 3.2
‘HB-130’ 3.0 3.0
‘HB-328’ 3.4 3.6
‘HB 329’ 3.7 3.6
‘Reveille’ 2.9 3.3
Geronimo’ 2.7 3.0
‘Ascot’ 2.9 2.9
‘Midnight’ 2.6 2.5
‘Buckingham’ 3.1 3.0
‘TX 51-91’ 3.5 3.2
‘TX 39-88’ 3.6 3.6
TX 49-90’ 5.4 5.0
‘Kelly’ 2.8 2.9
LSD (p = .05) 0.9 0.7
TABLE 55
Comparison of the length (mm) of glume #2 in first and third whorl of
‘HB-128’ and Kentucky and Texas bluegrass cultivars planted in
nursery #2.
Glume Length in First Glume Length in
Variety Whorl (mm) Third Whorl (mm)
‘HB-128’ 3.3 3.1
‘HB-129’ 3.5 3.3
‘HB-130’ 3.0 3.2
‘HB-328’ 3.8 3.9
‘HB 329’ 3.6 3.7
‘Reveille’ 3.3 3.5
Geronimo’ 2.9 3.1
‘Ascot’ 3.1 3.2
‘Midnight’ 3.1 3.3
‘Buckingham’ 3.4 3.4
‘TX 51-91’ 4.2 4.3
‘TX 39-88’ 4.0 4.2
TX 49-90’ 6.0 5.4
‘Kelly’ 3.0 3.0
LSD (P = .05) 1.0 0.8
TABLE 56
Comparison of the number of florets per spikelet in first and third
whorl in panicles of ‘HB-128’ and Kentucky and Texas bluegrass
cultivars planted in nursery #2.
Florets per Spikelet Florets per Spikelet
Variety In First Whorl In Third Whorl
‘HB-128’ 6.7 6.3
‘HB-129’ 8.6 7.0
‘HB-130’ 6.3 6.4
‘HB-328’ 5.2 5.0
‘HB 329’ 4.6 5.0
‘Reveille’ 4.0 4.9
Geronimo’ 5.2 6.0
‘Ascot’ 3.8 4.3
‘Midnight’ 4.3 5.6
‘Buckingham’ 6.7 7.1
‘TX 51-91’ 8.8 8.3
‘TX 39-88’ 8.0 7.9
TX 49-90’ 8.7 8.6
‘Kelly’ 4.3 4.9
LSD (P = .05) 1.7 1.8
TABLE 57
Comparison of the length and width (mm) of 10 seeds of ‘HB-128’ and
Kentucky and Texas bluegrass cultivars planted in nursery #3.
Variety Length 10 Seeds (mm) Width of 10 Seeds (mm)
‘HB-128’ 32.0 9.9
‘HB-129’ 32.8 9.8
‘HB-130’ 31.9 9.5
‘HB-328’ 31.3 10.3
‘HB-329’ 38.2 11.0
‘Geronimo’ 32.5 10.8
‘TX51-90’ n/a n/a
‘TX49-90’ n/a n/a
‘Ascot’ 32.2 9.8
‘Midnight’ 33.0 9.3
‘Reveille’ 32.5 10.8
‘Kelly’ 32.8 10.1
LSD (P = .05) 2.5 1.0
TABLE 58
Comparison of 1000 count seed weight (grams) of ‘HB-128’ and
Kentucky and Texas bluegrass cultivars planted in nursery #3.
Variety 1000 count seed weight (grams)
‘HB-128’ 0.5680
‘HB-129’ 0.5682
‘HB-130’ 0.5735
‘HB-328’ 0.5411
‘HB-329’ 0.5881
‘Geronimo’ 0.5760
‘TX51-90’ n/a
‘TX49-90’ n/a
‘Ascot’ 0.5695
‘Midnight’ 0.5217
‘Reveille’ 0.6020
‘Kelly’ 0.5729
LSD (P = .05) 0.0791
TABLE 59
Comparison of summer re-growth during an extended 8 week
drought period following harvest of ‘HB-128’ and Kentucky and
Texas bluegrass cultivars planted in nursery #3.
Variety Green Tissue (%)
‘HB-128’ 36.7
‘HB-129’ 28.3
‘HB-130’ 38.3
‘HB-328’ 16.7
‘HB-329’ 60.0
‘Geronimo’ 41.7
‘TX51-90’ 86.7
‘TX49-90’ 90.0
‘Ascot’ 16.7
‘Midnight’ 10.0
‘Reveille’ 88.3
‘Kelly’ 10.0
LSD (p = .05) 15.2
* This table shows that ‘HB 128’ has a more rapid regrowth following an drought induced dormancy than ‘HB 129’.
TABLE 60
Comparison of plant spread (aggressiveness) at 15 months after
planting of ‘HB-128’ and Kentucky and Texas bluegrass cultivars
planted in nursery #3 (when measured in mid-winter).
Variety Plant Spread (square cm area)
‘HB-128’ 2565
‘HB-129’ 2279
‘HB-130’ 2376
‘HB-328’ 1520
‘HB 329’ 1097
‘Reveille’ 1210
Geronimo’ 2178
‘Ascot’ 950
‘Midnight’ 912
‘Buckingham’ 1330
‘TX 51-91’ 672
‘TX 39-88’ 385
TX 49-90’ 337
‘Kelly’ 982
LSD (P = .05) 544
TABLE 61
Comparison of incidence of rust and dollarspot disease on plot of a turf
planting of ‘HB-128’ and Kentucky bluegrass cultivars planted in
Valley Center, California (one year after seeding).
Variety Rust % Dollarspot %
‘HB-128’ 15.3 13.3
‘HB-129’ 16.7 21.7
‘HB-130’ 13.3 16.7
‘HB-328’ 2.0 0.0
‘HB 329’ 2.0 0.3
‘Abbey’ 13.3 16.7
‘Midnight’ 26.7 0.3
‘Apollo’ 23.3 0.0
LSD (P = .05) 10.3 10.6
* This table shows that ‘HB 128’ has a better tolerance to foliar dollarspot disease than ‘HB 129’.
TABLE 62
Comparison of spring color and texture of ‘HB-128’ and Kentucky
bluegrass cultivars ma turf planting in Valley Center, California
(planted in October).
Spring Color Spring Texture
9 = Dark Green, 9 = Fine,
Variety 1 = Yellow 1 = Coarse
‘HB-128’ 5.3 6.0
‘HB-129’ 5.0 6.7
‘HB-130’ 6.0 6.3
‘HB-328’ 8.0 5.3
‘HB 329’ 8.0 5.0
‘Abbey’ 5.3 6.3
‘Midnight’ 7.0 7.0
‘Apollo’ 7.0 7.0
LSD (P = .05) 1.0 0.8
TABLE 63
Comparison of summer (June) and winter (January) turf performance
of ‘HB-128’ and Kentucky bluegrass cultivars in Valley Center,
California.
% Leaf Roll % Winter Discolor
Variety (Heat Stress) (Cold Stress)
‘HB-128’ 60.0 41.7
‘HB-129’ 43.3 41.7
‘HB-130’ 40.0 43.3
‘HB-328’ 0.0 33.3
‘HB 329’ 8.3 33.3
‘Abbey’ 36.7 50.0
‘Midnight’ 36.7 20.0
‘Apollo’ 36.7 26.7
LSD (p = .05) 34.4 4.9
TABLE 64
Comparison of vertical growth performance and greening in early
spring of ‘HB-128’ and Kentucky bluegrass cultivars in turf planting in
Gervais, Oregon (planted in September).
Spring Vertical Growth Early Spring Greenup
Variety (height - cm) 9 = Green, 1 = Brown
‘HB-128’ 91.3 6.7
‘HB-130’ 82.3 6.3
‘HB-328’ 70.3 4.7
‘HB 329’ 64.3 4.3
‘HB-129’ 84.3 6.0
‘Bluemax’ 59.3 3.3
‘Courtyard’ 54.0 2.3
‘Avalanche’ 83.0 6.7
‘Kenblue’ 92.0 7.3
‘Geronimo’ 68.7 5.3
LSD (P = .05) 14.5 0.9
* This table demonstrates that ‘HB 128’ is quicker to greenup in springtime than ‘HB 129’ and shows better recovery from winter induced dormancy.
TABLE 65
Comparison of seedling density in two different turf plantings of
‘HB-128’ and Kentucky and Texas bluegrass cultivars fall planted
(in Season #1 and #2) in Gervais, Oregon.
Growing Season #1 Growing Season #2
Variety 21 Days After Planting 27 Days After Planting
‘HB-128’ 45.0 17.5
‘HB-129’ 25.0 9.5
‘HB-130’ 38.3 12.0
‘HB-328’ 31.7 16.3
‘HB-329’ 7.7 9.8
‘Geronimo’ 35.0 11.5
‘Midnight’ n/a 11.3
‘Reveille’ n/a 1.1
‘Ascot’ n/a 14.5
‘Apollo’ n/a 6.8
‘Kenblue’ 56.7 23.0
‘Park’ n/a 30.0
‘Longhorn’ n/a 22.5
LSD (P = .05) 14.6 6.85
* This table shows that ‘HB 128’ has demonstrated a more rapid germination and establishment than other hybrid and some Kentucky bluegrasses.
TABLE 66
Comparison of summer turf dormancy of ‘HB-128’ and Kentucky
bluegrass cultivars in Cleveland, Texas.
Variety Percent Brown Turf
‘HB-128’ 56.7
‘HB-129’ 41.7
‘HB-130’ 38.3
‘HB-328’ 31.7
‘Reveille’ 50.0
‘Ascot’ 43.3
‘Coventry’ 46.7
‘Abbey’ 40.0
LSD (p = .10) 14.43
Additional Color Description The upper and lower leaf blade surface colors of ‘HB-128’ were determined by comparing several actively growing leaves one at a time, in full sun, with color chips from the Munsell Book of Color, Volume I of a two volume set as a reference. On this basis, the color of the upper and lower leaf blade surfaces were determined. The upper leaf blade surfaces ranged from 5GY 4/4 to 4/6 and the lower leaf blade surfaces ranged from 5GY 3/4 to 3/6.
Additionally, color designations were determined from tillers harvested from the plant nursery using the Munsell Book of Color, Volume I of a two volume set as a reference, as follows: 10YR 7/4 to 8/6 for ‘HB-228’ culm; 10YR 7/4 to 7/6 for peduncle; 10YG 7/4 to 8/4 for spikelet; and 10YG 6/4 to 7/4 for ‘HB-128’ seed.
