Raspberry plant named ‘PS-1852’

Abstract

This invention relates to a new and distinct variety of raspberry plant named ‘PS-1852’. The new variety is primarily adapted to the growing conditions of the central coast of California and is characterized by the following: large upright primocanes, late fall primocane production, early spring floricane production, large conical berries, with nearly ⅔ of the total production coming from the floricane. Foliage is strongly concave, medium green; possessing very strong rugosity, and always 3-foliage. Primocanes have a weak waxy coat, dense thorns, and weak to medium anthocyanin coloration.

Description

Latin name of the genus and species of the plant claimed: Rubus idaeus.

Variety denomination: ‘PS-1852’.

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct raspberry variety designated as ‘PS-1852’. This new variety is a result of a controlled cross made by the inventor, Stephen M. Ackerman, in 1995 between raspberry variety ‘PS-1094’ (an unpatented Plant Sciences, Inc. selection) and raspberry variety ‘PS-1316’ (an unpatented selection). The variety is botanically known as Rubus idaeus.

The seedling resulting from the aforementioned cross was asexually propagated by dormant canes in Santa Cruz County, Calif. and was subsequently selected by the inventor from a controlled breeding plot in Watsonville, Calif. in 1997. After its selection, the new variety was further asexually propagated by dormant canes, roots and non-dormant root shoot cuttings in both Santa Cruz County, Calif. and San Joaquin County, Calif. The new variety was then extensively tested over the next several years in fruiting fields in Santa Cruz County, Calif. This propagation has demonstrated that the combination of traits disclosed herein as characterizing the new variety are fixed and remain true to type through successive generations of asexual reproduction.

BRIEF SUMMARY OF THE INVENTION

‘PS-1852’ is primarily adapted to the climate and growing conditions of the central coast of California. This region provides the necessary year-round temperatures required for it to produce and maintain a strong vigorous plant and to remain in fruit production from August through December on primocanes and in the ensuing year from May through July on the floricanes. The following traits have been repeatedly observed and are determined to be unique characteristics of ‘PS-1852’, which in combination distinguish this raspberry plant as a new and distinct variety:

• • 1. Large plant size;
  • 2. Late fall primocane production;
  • 3. Early spring floricane production; and
  • 4. Large fruit size.

The raspberry varieties that are believed to be most closely related to the new raspberry variety ‘PS-1852’ are the raspberry variety ‘PS-1049’ (patented, U.S. Plant Pat. No. PP 10,142), and the raspberry variety ‘PS-1703’ (patented, U.S. Plant Pat. No. PP 15,151).

In comparison to the similar raspberry varieties ‘PS-1049’ and ‘PS-1703’, ‘PS-1852’ differs by the following combination of characteristics described in Table 1:

TABLE 1
		‘PS-1049’	‘PS-1703’
Characteristic	‘PS-1852’	(U.S. PP 10,142)	(U.S. PP 15,151)
1.	Primocane	2.2	2.0	1.8
	length (m)
2.	Basal	18.6	16.4	15.3
	diameter
	(mm)
3.	Internode	3.8	5.0	5.8
	length of
	central ⅓
	(cm)
4.	Predominate	Always 3	Equal 3-5	Mostly 5
	number of
	leaflets
5.	Leaf color	7.5GY 3/4 to	7.5GY 3/4 to 4/4	7.5GY 2/4 to 3/4
	(upper side)	3/6
6.	Leaf shape	Strongly	Slightly	Slightly
	(cross	concave	concave	concave
	section)			to slightly
				convex
7.	Rugosity	Very strong	Medium	Medium to
				strong
8.	Percent of	27%	40%	46%
	primocane
	fruiting
9.	Primocane	10Y 7/4 to 7/6	5GY 7/4 to 6/4	7.5GY 6/2 to 6/4
	color
10.	Floricane	2.5YR 3/4 to	5YR 4/4 to 4/6	5YR 4/4 to 4/6
	color	7.5YR 4/6
11.	Bloom	Weak	Strong	Medium to
	intensity			strong
12.	Thorn den-	7.2	4.0	4.5
	sity per cm
	of central ⅓

For identification a series of molecular markers have been determined for this new variety.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying color photographs illustrate the overall appearance of typical specimens of the new raspberry variety, ‘PS-1852’, at various stages of development as true as reasonably possible with color reproductions of this type. Color in the photographs may differ slightly from the color value cited in the detailed botanical description which accurately describes the color of ‘PS-1852’. The depicted plant and plant parts of the new raspberry variety ‘PS-1852’ were taken in Watsonville, Calif. and are approximately 7 to 10 months old.

FIG. 1 shows typical primocane plant characteristics taken in the month of August;

FIG. 2 shows a close-up of typical primocane foliage characteristics taken in the month of August;

FIG. 3 shows typical primocane field fruiting characteristics taken in the month of August; and

FIG. 4 shows typical primocane fruit characteristics taken in the month of October.

DETAILED BOTANICAL DESCRIPTION

‘PS-1852’ has not been observed under all possible environmental conditions. The characteristics of the new variety may vary in detail, depending upon variations in environmental factors, including weather (temperature, humidity and light intensity), day length, soil type, and location.

The aforementioned photographs, together with the following description of the new raspberry variety ‘PS-1852’, unless otherwise noted, is based on observations taken during the 2006 growing season in Watsonville, Calif. Primocane measurements and ratings were taken from plants of ‘PS-1852’ dug from a nursery located in San Joaquin County, Calif., during the middle of December, 2005, and planted approximately 3 to 4 weeks later in Watsonville, Calif. The approximate age of the observed primocane plants is 7 to 8 months. Floricane measurements and ratings were taken from the plants of ‘PS-1852’ dug from a nursery located in San Joaquin County, Calif., during the middle of December, 2004, and planted approximately 3 to 4 weeks later in Watsonville, Calif. The approximate age of the observed floricane plants is 16 to 18 months. Yield observations and fruit quality characteristics are averaged from three years of data collected from the 2004 through 2006 production seasons. Flower measurements and characteristics are from secondary flowers unless otherwise noted. Fruit characteristics and measurements are from secondary fruit unless otherwise noted. Foliage characteristics and measurements are from 3-foliate foliage unless otherwise noted.

Color terminology where noted follows the Munsell Book of Colors, Munsell Color, Baltimore, Md. (1976).

In comparison to the similar raspberry varieties ‘PS-1049’ and ‘PS-1703’, the fruit characteristics of ‘PS-1852’ differ as described in Table 2:

TABLE 2
FRUIT CHARACTERISTICS
		‘PS-1049’	‘PS-1703’
Characteristic	‘PS-1852’	(U.S. PP 10,142)	(U.S. PP 15,151)
Color mature	5R 3/6 to 3/8	5R 3/6 to 3/8	5R 3/10 to 3/8
fruit	Medium red	Medium red	Medium red
Color achenes	10YR 7/4 to 8/4	10YR 7/4 to 8/4	10YR 7/4 to 8/4
Fruit Length	2.3	1.9	2.1
(cm)
Fruit Width	2.0	1.8	1.8
(cm)
Length/Width	1.1	1.1	1.2
Ratio	Slightly longer	Slightly longer	Slightly longer
	than broad	than broad	than broad
Seed weight	1.8	1.5	1.6
(mg)
Druplets per	113	104	113
berry
Fruit size	Large	Medium	Medium
Predominant	Conical	Conical	Conical
shape
Evenness of	Slightly uneven	Even	Even
color
Glossiness	Medium	Medium	Strong
Adherence of	Weak	Weak	Weak
receptacle
Firmness of	Firm	Very firm	Firm
flesh
Firmness of	Medium	Very firm	Medium
skin

In comparison to the similar raspberry varieties ‘PS-1049’ and ‘PS-1730’, the plant characteristics of ‘PS-1852’ differ as described in Table 3:

TABLE 3
PLANT CHARACTERISTICS
		‘PS-1049’	‘PS-1703’
Characteristic	‘PS-1852’	(U.S. PP 10,142)	(U.S. PP 15,151)
General:
Habit	Upright	Semi-upright	Semi-upright
Size	Large	Medium	Medium
Productivity	Medium	High	High
Self	Yes	Yes	Yes
fruitfulness
Type of	Everbearing	Everbearing	Everbearing
bearing
Primocane:
Color	10Y 7/4 to 7/6	5GY 7/4 to 6/4	7.5GY 6/2 to 6/4
	Medium yellow-	Light green-	Medium to light
	green	yellow	green-yellow
Length (m)	2.2	2.0	1.8
Basal dia-	18.6	16.4	15.3
meter (mm)
Diameter	12.3	11.3	10.9
central
⅓ (mm)
Lateral length	46.3	57.4	64.6
(cm)
No. fruiting	10	14	13
laterals per
cane
% of cane	27%	40%	46%
length fruiting
Internode	3.8	5.0	5.8
length
(of central
⅓ cm)
Anthocyanin	Weak to medium	Weak to medium	Medium to
coloration			strong
Pubescence	Absent	Absent	Absent
Length of	Short to Medium	Short to Medium	Short to
vegetative bud			medium
Strength of	Weak	Strong	Medium to
waxy coat			strong
Time of	Late	Medium	Early
flowering
Time of	Late	Medium	Early
fruiting
Length of	Medium	Long	Long
fruiting season
% of total	38%	54%	52%
yield
Flowering	Early August to	Late June to	Early June to
period	Late November	Late November	Late November
Harvest period	Early September	Late July to	Early July to
	to Late December	Late December	Late December
Primocane fruit	3.7	2.8	3.1
weight (g)
Primocane	1,037	1,841	1,956
yield
(g/plant)
Young Shoots:
Number	Medium	Medium	Medium
Anthocyanin	Present	Present	Present
coloration
Anthocyanin	Very weak to	Very weak to	Absent to very
intensity	weak	weak	weak
Thorns:
Color	7.5RP 3/6	7.5RP 3/6	7.5RP 3/6
	Purple	Purple	Purple
Length central	2.3	2.2	1.7
⅓ (mm)
Presence on	Present	Present	Present
cane
Density on	Medium to dense	Medium	Medium
cane
Texture	Rigid	Rigid	Rigid
Attitude of	Horizontal	Horizontal	Horizontal
the tip
Floricane:
Color	2.5YR 3/4 to	5YR 4/4 to 4/6	5YR 4/4 to 4/6
	7.5YR 4/6	Brown	Brown
	Brownish-purple
Length (m)	1.6	1.3	1.1
Length	Short	Long	Short
vegetative
bud (mm)
Strength of	Weak	Strong	Medium to
waxy coat			strong
Fruiting lateral	Erect to semi-	Erect to semi-	Horizontal to
attitude	erect	erect	drooping
Time bud	Medium to late	Medium	Medium
burst
Time of	Early	Medium	Medium
flowering
Time of	Early	Medium	Medium
fruiting
Length of	Medium to long	Medium to long	Medium to
fruiting season			long
% of total	62%	46%	48%
yield
Flowering	Early April to	Late April to	Mid April to
period	Late June	Late June	Late June
Harvest period	Early May to	Late May to	Early May to
	Late July	Late July	Late July
Floricane fruit	3.2	2.6	2.8
weight (g)
Floricane yield	1,684	1,582	1,811
(g/plant)

In comparison to the similar raspberry varieties ‘PS-1049’ and ‘PS-1703’, the foliage characteristics of ‘PS-1852’ differ as described in Table 4:

TABLE 4
FOLIAGE CHARACTERISTICS
		‘PS-1049’	‘PS-1703’
	‘PS-1852’	(U.S. PP 10,142)	(U.S. PP 15,151)
Characteristic	(3 Foliate)	(3 Foliate)	(5 Foliate)
General:
Color of	7.5GY 3/4 to 3/6	7.5GY 3/4 to 4/4	7.5GY 2/4 to 3/4
upper surface	Medium green	Medium green	Medium to Dark
		yellow	Green
Color of	5GY 6/2 to 7/2	5GY 5/4 to 6/4	5GY 6/2 to 7/2
lower surface	Light to Pale	Pale yellow-	Light to Pale
	grey-green	green	grey-green
Shape in	Strongly concave	Slightly concave	Slightly concave
cross section			to slightly
			convex
Arrangement	Compound	Compound	Compound
Relief be-	Very strong	Medium	Medium to
tween veins			strong
Glossiness	Weak	Weak	Medium
Number of	Always 3	Equal 3-5	Mostly 5
leaflets/leaf
Terminal
Leaflet:
Length (cm)	13.6	15.2	13.5
Width (cm)	10.0	10.9	7.0
Length/Width	1.4	1.4	1.9
Ratio	Longer than	Longer than	Much longer
	broad	broad	than broad
Size	Medium to large	Medium to large	Medium to small
Shape	Cordate	Cordate	Lobed oblique
Shape of base	Cordate	Cordate	Acute
Shape of tip	Acuminate	Acuminate	Acuminate
Margins	Biserrate	Biserrate	Biserrate
Lateral
Leaflet:
Length (cm)	11.3	12.4	11.6
Width (cm)	7.4	7.6	7.0
Rachis	3.8	3.9	1.4
length (cm)
Orientation	Opposite	Opposite	Opposite
Arrangement	Compound	Compound	Compound
Shape	Ovate	Ovate	Oblique
Overlapping	Touching	Touching	Free
Shape of	Acute rounded	Oblique rounded	Acute oblique
the base
Shape of the tip	Acuminate	Acuminate	Acuminate
Margins	Biserrate	Biserrate	Biserrate
Petiole:
Length (cm)	5.1	6.0	6.2
Width (mm)	3.4	3.0	3.5
Thorn presence	Yes	Yes	Yes
Thorn	Erect	Erect	Erect
orientation
Anthocyanin	Absent to	Absent to	Medium to
coloration of	very weak	very weak	strong
upper surface
Pigmentation	Light green-	Light green-	Light green-
of lower	yellow	yellow	yellow
surface
Stipule	1.1	1.1	1.1
length (cm)
Stipule	Erect	Erect	Erect
orientation

In comparison to the similar raspberry varieties ‘PS-1049’ and ‘PS-1703’, the flower characteristics of ‘PS-1852’ differ as described in Table 5:

TABLE 5
FLOWER CHARACTERISTICS
		‘PS-1049’	‘PS-1703’
Characteristic	‘PS-1852’	(U.S. PP 10,142)	(U.S. PP 15,151)
Petal Color	N 9.5/90% R to	N 9.5/90% R to	N 9.5/90% R to
	N 9.25/84.2% R	N 9.25/84.2% R	N 9.25/84.2% R
	White	White	White
Flower	2.0	1.7	1.7
diameter (cm)
Size	Medium	Medium	Medium
Petal	5.8	5.8	6.4
Length (mm)
Petal	2.8	2.7	2.7
width (mm)
Petal width/	2.1	2.2	2.4
width ratio	Much longer	Much longer	Much longer
	than broad	than broad	than broad
No. petals/	5.0	5.0	5.0
flower
No. sepals/	5.0	5.0	5.2
flower
Pedicel no.	Few	Many	Medium
spines
Peduncle	Present	Present	Present
anthocyanin
presence
Peduncle	Medium	Very weak	Very weak
anthocyanin
intensity

In comparison to the similar raspberry varieties ‘PS-1049’ and ‘PS-1703’, the pest and disease reactions of ‘PS-1852’ differ as described in Table 6:

TABLE 6
PEST AND DISEASE REACTIONS
		‘PS-1049’	‘PS-1703’
Characteristic	‘PS-1852’	(U.S. PP 10,142)	(U.S. PP 15,151)
Two spotted spider	Susceptible	Susceptible	Susceptible
mite
Grey fruit mold	Susceptible	Susceptible	Susceptible
Powdery mildew	Moderately	Moderately	Moderately
	Susceptible	Susceptible	Susceptible
Yellow rust	Moderately	Moderately	Moderately
	Susceptible	Susceptible	Resistant

Claims

1. A new and distinct raspberry plant known as ‘PS-1852’, as herein described and illustrated by the characteristics set forth above.