Selective Elimination of Gametes during Pollen Storage at Low Temperature as a Way to Improve the Genetic Structure of Sporophytic Population for Cold Tolerance
作者： V. A. Lyakh , I. V. Totsky
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摘要: Abstract: The genetic structure of F 2 sporophytic populations after 1 sunflowerpollen storage at low temperature has been studied. Freshly collected pollen wasstored the 3 1°C for a period 7–8 days and used to self-pollinate emasculated plants. seeds were germinated 5 1°C, andthen percentage seed germination was counted. Germinated notgerminated separately planted in phytotron an optimumtemperature. Segregation ratios marker traits analyzedat stage second pair true leaves. Pollen treatment compared withthe control (fresh pollen) significantly changed monogenicratios some traits. In cross combinations, increase coldtolerance found. Obtained results show that storageat selectively influences male gametophytes hybridsthat change populations.Keywords: sunflower,
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