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An influence of 5-azacitidine treatment on flower stalk branching in sugar beet (Beta vulgaris L.)

Maletskaya E.I., Yudanova S.S., Maletskii S.I.

 


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An influence of epimutagen 5-azacitidine on a flower stalk morphogenesis in sugar beet was studied. After the epimutagene treatment the great number of the first- and the third-order branch formation was observed. A higher level of branching completely modified the flower stalk architectonics (generations 0z0 and 1z1). A number of the second-order branches in the control and the experimental plants were not distinguished. A new epiphenotype with higher level of branching (generation 0z0) inherited in daughter generation 1z1. A flower stalk architectonics was modified because the third-order branches developed in the bract axil instead of flower primordium. A great number of lateral shoot modified a metamer organization of the flower stalk. The metamers on the third-order branches were single-flowered.

Key words: 5-azacitidine; epimutagene treatment; flower stalk morphgenesis; branching; metamerism

Tsitologiya i Genetika 2006, vol. 40, no. 6, pp. 15-20

E-mail: e_mal bionet.nsc.ru

Maletskaya E.I., Yudanova S.S., Maletskii S.I. An influence of 5-azacitidine treatment on flower stalk branching in sugar beet (Beta vulgaris L.), Tsitol Genet., 2006, vol. 40, no. 6, pp. 15-20.




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