1. Poliploidija viendienės (Hemerocallis L.) selekcijoje.
- Author
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Misiukevičius, Edvinas
- Subjects
- *
ANTIMITOTIC agents , *FLOWERS , *TRIFLURALIN , *SEEDLINGS , *SPECIES , *DAYLILIES - Abstract
There is a great deal of interest in daylilies throughout the world. Currently, the American Hemerocallis Society (AHS), which maintains a registrar of varieties of this genus, notes that there are more than 90,000 varieties at the moment. Of these, ~ 28,000 have been registered in the last ten years. Tetraploid induction bagan in 1955 using seedling treatment by colchicine. Compared to diploid, tetraploid daylilies have larger flowers, thicker and more compact scapes, wider and longer leaves, and have longer flowering periods. This determines the advantage of the plant. As a result, half of the registered varieties are tetraploids. Diploid (2n = 22) species predominate in natural habitats, but some H. fulva forms are triploid (3n = 33). Artificial polyploidization is induced by the use of antimitotic agents such as colchicine, orizaline, trifluralin, pronamide and amiprofosmetil, and their induction properties differ. [ABSTRACT FROM AUTHOR]
- Published
- 2019