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Chrysanthemum plant |
| PP4220 |
Chrysanthemum plant
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| Patent Drawings: | |
| Inventor: |
Jessel, Jr., et al. |
| Date Issued: |
March 7, 1978 |
| Application: |
05/780,984 |
| Filed: |
March 24, 1977 |
| Inventors: |
Duffett; William E. (Salinas, CA)
Jessel, Jr.; Walter H. (Grantsville, WV)
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| Assignee: |
Yoder Brothers, Inc. (Barberton, OH) |
| Primary Examiner: |
Bagwill; Robert E. |
| Assistant Examiner: |
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| Attorney Or Agent: |
Jeffery; Donald D. |
| U.S. Class: |
PLT/295 |
| Field Of Search: |
; PLT/74 |
| International Class: |
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| U.S Patent Documents: |
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| Foreign Patent Documents: |
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| Other References: |
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| Abstract: |
An induced mutation of Frost characterized by its yellow ray florets. |
| Claim: |
We claim:
1. A new and distinct cultivar of Chrysanthemum morifolium Ramat, known by the cultivar name Yellow Frost and particularly characterized as to uniqueness by the combined characteristicsof spoon daisy capitulum type; flat capitulum form; medium yellow ray floret color; yellow green (immature) to yellow (mature) disc floret color; diameter across face of capitulum from 80 to 95 mm. at maturity; uniform nine week flowering responseto photoperiodic short-day control; medium plant height; semi-spreading branching pattern; and minimal pollen development. |
| Description: |
The present invention comprises a new and distinct cultivar ofChrysanthemum morifolium Ramat., hereinafter referred to by the cultivar name Yellow Frost (#72072B13).
Yellow Frost is a product of planned sport induction program which had the objective of expanding the color range of the parental cultivar, Frost (#72072013: disclosed in our U.S. Plant patent application filed Aug. 23, 1976, Ser. No.716,438).
Yellow Frost was discovered and selected by William E. Duffett and Walter H. Jessel, Jr. on May 20, 1975 as one plant within a flowering block of Frost in a controlled environment in Barberton, Ohio. Plants within the flowering block werederived from stock plants which had been irradiated as rooted cuttings with an x-ray source of 1800 r units.
The first act of asexual reproduction of Yellow Frost was accomplished when vegetative cuttings were taken from the initial selection in October, 1975 in a controlled environment in Barberton, Ohio by a technician working under formulationsestablished and supervised by Walter H. Jessel, Jr. and William E. Duffett. Horticultural examination of selected units initiated Mar. 29, 1976 has demonstrated that the combination of characteristics as herein disclosed for Yellow Frost are firmlyfixed and are retained through successive generations of asexual reproduction.
Yellow Frost has not been observed under all possible environmental conditions. The phenotype may vary significantly with variations in environment such as temperature, light intensity, and day length. The following observations, measurements,and comparisons describe plants grown in Barberton, Ohio under greenhouse environmental conditions which approximate those generally used in commercial practice, as described in Chart A which appears at the end of the present specification. A lightintensity chart of general use is shown in ASHAE Trans., Vol. 64, page 64, and reference is made thereto.
The following traits have been repeatedly observed and are determined to be basic characteristics of Yellow Frost which in combination distinguish this chrysanthemum as a new and distinct cultivar:
1. Spooned daisy capitulum type.
2. Flat capitulum form.
3. Medium yellow ray floret color.
4. Yellow-green (immature) to yellow (mature) disc floret color.
5. Diameter across face of capitulum from 80 to 95 mm. at maturity.
6. Uniform 9 week flowering response to photoperiodic short-day control.
7. Medium plant height (requires 1-2 long day weeks prior to short days to obtain a flowered plant height of 72 to 82 cm. when grown as a single stem plant for May through October flowerings.)
8. Semi-spreading branching pattern.
9. Minimal pollen development.
The accompanying color photographic drawing shows typical inflorescence and foliage characteristics of Yellow Frost. Color representations are as nearly true as possible with illustrations of this type.
Of the many commercial cultivars known to the present inventors, the most similar existing cultivar in comparison to Yellow Frost is the parental cultivar, Frost. Reference is made to attached Chart B which compares certain characteristics ofFrost with the same characteristics of Yellow Frost. As noted in Chart B, the primary distinguishing characteristic of Yellow Frost in comparison to Frost is that of ray floret color. All other characteristics of Yellow Frost are similar to those samecharacteristics of Frost.
In the following description, color references are made to The Munsell Limit Color Cascade, 1972 edition. The color values were determined between 3:30 and 4:00 P.M. on Dec. 30, 1976 under 150 foot-candle light intensity at Barberton, Ohio.
Botanical classification: Chrysanthemum morifolium, Ramat., cv Yellow Frost.
INFLORESCENCE
Capitulum:
Form.--Flat.
Type.--Spooned daisy.
Diameter across face.--80 to 95 mm.
Corolla of ray florets:
Color (abaxial).--25-4.
Color (adaxial).--25-2.
Corolla of disc florets:
Color.--22-8 (immature) to 26-6 (mature).
Reproductive organs:
Androecium.--Present disc florets only.
Gynoecium.--Present both ray and disc florets.
PLANT
General appearance: semi-spreading branching pattern; medium height.
Foliage:
Color (abaxial).--Approximately 19-15.
Color (adaxial).--Approximately 19-13 to 19-14.
CHART A __________________________________________________________________________ AVERAGE GREENHOUSE CHRYSANTHEMUM ENVIRONMENTS USED FOR BARBERTON, OHIO TEMPERATURES USED Bright Cloudy LIGHTING BLACK CLOTH SUPP SEASON Night Day DayUSED 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 56.degree. F 80.degree.F 75.degree. F of 7-10 f.c. Off - 7:30 AM 300 ppm 58.degree. F 65.degree. F 60.degree. F 2 to 5 weeks at 5 Hours Per WINTER to to to Night None 300 ppm 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 at 5 Hours Per on - 5:30 PM Apr. 15 SPRING to to to Night 65.degree. F 80.degree. F 75.degree. F of 7-10 f.c. Off - 7:30 AM 300 ppm 62.degree. F 70.degree. F 65.degree. F 1 to 2 weeks at 3Hours Per On - 6:00 PM SUMMER to to to Night NONE 68.degree. F 90.degree. F 75.degree. F of 7-10 f.c. Off - 8:00 AM __________________________________________________________________________
CHART B __________________________________________________________________________ COMPARISON OF YELLOW FROST AND FROST DIAMETER ACROSS FLOWERING CAPITULUM RAY FLORET FACE OF PLANT BRANCHING RRSPONSE FORM AND CULTIVAR COLOR CAPITULUMHEIGHT PATTERN PERIOD TYPE __________________________________________________________________________ Yellow Frost Medium 80 to 95 mm. Medium Semi- 9 week Flat Yellow spreading Spoon Daisy Frost White 80 to 95 mm. Medium Semi- 9 week Flat spreading Spoon Daisy __________________________________________________________________________ COMPARISONS MADE OF PLANTS GROWN IN A GREENHOUSE IN BARBERTON, OHIO UNDER ENVIRONMENTAL CONDITIONS AS DESCRIBED IN CHART A.
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