| 摘要 |
A Chrysanthemum plant named Yellow Fina particularly characterized by its flat capitulum form; anemone to daisy capitulum type; yellow ray floret color; diameter across face of capitulum of up to 10 cm at maturity; uniform eight week photoperiodic flowering response to short days; peduncle length ranging from 8 to 20 cm on open, terminal sprays; medium plant height when grown as a single stem spray cut mum; and excellent tolerance to low temperatures for bud initiation and flower development. The present invention comprises a new and distinct cultivar of Chrysanthemum, botanically known as Dendranthema grandiflora, and referred to by the cultivar name Yellow Fina. Yellow Fina, identified as 84-567B06, is a product of a mutation induction program which had the objective of creating new Chrysanthemum cultivars that would expand the color range of an existing cultivar while retaining all other traits. Yellow Fina was discovered and selected by Cornelis P. VandenBerg on Nov. 17, 1987 in a controlled environment in Salinas, Calif. as one flowering plant with a flowering block established as rooted cuttings from stock plants which had been exposed as unrooted cuttings to an X-ray source of 1750 rads. The irradiated parent was the cultivar identified as Fina, disclosed in plant patent application Ser. No. 07/173,082, now U.S. Plant Pat. No. 6,881. The first act of asexual reproduction of Yellow Fina was accomplished when vegetative cuttings were taken from the initial selection in January 1988 in a controlled environment in Salinas, Calif., by technicians working under formulations established and supervised by Cornelis P. VandenBerg. Horticultural examination of controlled flowerings of successive plantings has shown that the unique combination of characteristics as herein disclosed for Yellow Fina are firmly fixed and are retained through successive generations of asexual reproduction. Yellow Fina 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 Salinas, Calif. under greenhouse conditions which approximate those generally used in commercial greenhouse practice. The low temperature tolerance of the new variety as noted below was determined in repeated flowerings in Bogota, Colombia. The following traits have been repeatedly observed and are determined to be basic characteristics of Yellow Fina, which, in combination, distinguish this Chrysanthemum as a new and distinct cultivar: 1. Flat capitulum form. 2. Anemone to daisy capitulum type. 3. Yellow ray floret color. 4. Diameter across face of capitulum of up to 10 cm at maturity. 5. Uniform eight week photoperiodic flowering response to short days. 6. Peduncle length ranging from 8 to 20 cm on open, terminal sprays. 7. Medium plant height, requiring two long day weeks prior to short days to attain a flowered plant height of 90 to 100 cm for year-round flowerings. 8. Excellent tolerance to low temperatures for bud initiation and flower development.
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