Chrysanthemum plant

Abstract

A spider chrysanthemum characterized by its white ray florets and ability to be flowered throughout the year.

Description

The present invention comprises a new and distinct cultivar of Chrysanthemum morifolium Ramat., hereinafter referred to by the cultivar name Splash (#73038048).

Splash is a product of a planned breeding program which had the objective of creating new chrysanthemum cultivars with spider capitulum type, with white ray floret color, with 9 and/or 10 week flowering response, and with the ability to produce commercially acceptable quality in year round cut mum programs. Such traits in combination were not present in previously available commercial cultivars.

Splash was originated from a cross made in a controlled breeding program in Barberton, Ohio in 1972. The female parent was White Spider 2275 (#21660E02; unpatented; commercially available), a white spider. The male parent was Yellow Daisy Pot (#2168AE01; unpatented; commercially available), a yellow spooned daisy sport of White Daisy Pot (#21680E01; unpatented; commercially available). The parentage of White Spider 2275 and White Daisy Pot is unknown to the present inventors.

Splash was discovered and selected as one flowering plant within the progeny of the stated cross by Walter H. Jessel, Jr. and William E. Duffett on Mar. 26, 1973 in a controlled environment in Barberton, Ohio.

The first act of asexual reproduction of Splash was accomplished when vegetative cuttings were taken from the initial selection in May, 1973 in a controlled environment in Barberton, Ohio, by a technician working under formulations established and supervised by Walter H. Jessel, Jr. and William E. Duffett. Horticultural examination of selected units initiated Feb. 18, 1975 has demonstrated that the combination of characteristics as herein disclosed for Splash are firmly fixed and are retained through successive generations of asexual reproduction.

Splash has not been observed under all possible environmental conditions. The phenotype may vary significantly with variations in environment such as temperature, light intensity, and daylength. The following observations, measurements, and comparisons describe plants grown in Barberton, Ohio under greenhouse conditions which approximate those generally used in commercial practice, as described in Chart A which appears at the end of the present specification. A light intensity chart of general use is shown in ASHAE Trans., Vol. 64, pg. 64 and reference is made thereto.

The following traits have been repeatedly observed and are determined to be basic characteristics of Splash which in combination distinguish this chrysanthemum as a new and distinct cultivar:

1. Flat capitulum form, reflexing slightly at full maturity.

2. Spider capitulum type.

3. Ivory white ray floret color.

4. Diameter across face of inflorescence ranging from 100 to 115 mm. at maturity.

5. Uniform 10 week photoperiodic flowering response to short days.

6. Tall plant height (requiring 2 to 4 long day weeks prior to short days to attain a flowered plant height of 72 to 82 cm. for November through April flowerings).

7. Semi-upright branching pattern.

The accompanying photographic drawings show typical inflorescence and foliage characteristics of Splash with colors being as nearly true as possible with illustrations of this type. Sheet 1 is a color photograph of Splash. Sheet 2 is a black and white photograph showing three views of the inflorescence of Splash. Sheet 3 is a black and white photograph showing the foliage of Splash at three stages of growth.

Of the many commercial cultivars known to the present inventors, the most similar existing cultivar in comparison to Splash is the maternal cultivar, White Spider 2275. Reference is made to attached Chart B which compares certain characteristics of Splash to those same characteristics of White Spider 2275. It will be noted that Splash has smaller diameter across face of capitulum, taller plant height, and longer flowering response period than White Spider 2275. The ray floret color, capitulum form, and capitulum type of Splash are similar to those same characteristics of White Spider 2275.

In the following description, color references are made to The Munsell Color Cascade, 1972 edition. The color values were determined between 2:00 and 2:30 P.M. on Nov. 12, 1976 under 150 foot-candle light intensity at Barberton, Ohio.

Botanical classification: Chrysanthemum morifolium, Ramat., cv Splash.

INFLORESCENCE

Capitulum (See Sheets 1 and 2 of drawings):

Form.--Flat, reflexing slightly with age.

Type.--Spider.

Permanence.--14 to 18 days.

Diameter across face.--100 to 115 mm.

Corolla of ray florets:

Persistence.--Resists shatter.

Color (abaxial).--25-3 to white.

Color (adaxial).--25-1 to white.

Reproductive organs:

Androecium.--Present disc florets only; scant to numerous; scant pollen.

Gynoecium.--Present both ray and disc florets.

PLANT

General appearance: semi-upright branching pattern; tall height.

Foliage (See Sheets 1 and 3):

Color (abaxial).--Approximately 20-15.

Color (adaxial).--Approximately 21-15 overlaid with white.

CHART A __________________________________________________________________________ AVERAGE GREENHOUSE CHRYSANTHEMUM ENVIRONMENTS USED FOR BARBERTON, OHIO TEMPERATURES USED Bright Cloudy LIGHTING BLACK CLOTH SUPP SEASON Night Day Day USED USED CO.sub.2 __________________________________________________________________________ 65.degree. F 65.degree. F 60.degree. F 2 to 4 weeks To Sept. 15 From at 3 Hours Per on - 5:30 PM Oct. 15 FALL to to to Night Off - 7:30 AM 300 ppm 56.degree. F 80.degree. F 75.degree. F of 7-10 f.c. 58.degree. F 65.degree. F 60.degree. F 2 to 5 weeks WINTER to to to at 5 hours Per NONE 300 ppm Night 62.degree. F 70.degree. F 65.degree. F of 7-10 f.c. 58.degree. F 65.degree. F 60.degree. F 2 to 4 weeks From Mar. 15 To on - 5:30 PM Apr. 15 SPRING to to to at 5 Hours Per Night Off - 7:30 AM 300 ppm 65.degree. F 80.degree. F 75.degree. F of 7-10 f.c. 62.degree. F 70.degree. F 65.degree. F 1 to 2 weeks SUMMER to to to at 3 Hours Per on - 6:00 PM Night NONE 68.degree. F 90.degree. F 75.degree. F of 7-10 f.c. Off - 8:00 AM __________________________________________________________________________

CHART B __________________________________________________________________________ COMPARISON OF SPLASH AND WHITE SPIDER DIAMETER CAPITULUM ACROSS FACE FLOWERING RAY FLORET FORM AND OF PLANT RESPONSE CULTIVAR COLOR TYPE CAPITULUM HEIGHT PERIOD __________________________________________________________________________ SPLASH Ivory Flat 100 to 115 mm. Tall 10 week white spider WHITE Ivory Flat SPIDER 130 to 175 mm. Short 10 week 2275 white spider __________________________________________________________________________ COMPARISONS MADE OF PLANTS GROWN AS SINGLE STEM CUT SPRAYS IN BARBERTON, OHIO UNDER CONDITIONS AS DESCRIBED IN CHART A.

Claims

1. A new and distinct cultivar of Chrysanthemum morifolium Ramat., plant known by the cultivar name Splash and particularly characterized as to uniqueness by the combined characteristics of flat capitulum form, reflexing slightly at full maturity; spider capitulum type; ivory white ray floret color; diameter across face of capitulum ranging from 100 to 115 mm. at maturity; uniform 10 week photoperiodic flowering response to short days; tall plant height when grown as a single stem cut spray; and semi-upright branching pattern.