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Study on Pollen Chromosome Doubling in Zenjimaru Persimmon

Study on Pollen Chromosome Doubling in Zenjimaru Persimmon
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摘要 The factors influencing pollen chromosome doubling in Zenjimaru persimmon were studied, based on the knowledge of meiosis process of pollen mother cells. The results showed: (1) the suitable concentration of colchicine was 0.3-0. 5%; (2) the best doubling effect could be obtained during the period from the diplotene stage to the diakinasis stage, and the highest proportion was up to 40.6%; (3) considering giant pollen ratio and proportion of staminate-flower collection, the better treating frequency was 3 times; (4) giant pollen, which formed mainly from dyad and had bigger cell nucleus volume, was unreduced and hexaploid. The factors influencing pollen chromosome doubling in Zenjimaru persimmon were studied, based on the knowledge of meiosis process of pollen mother cells. The results showed: (1) the suitable concentration of colchicine was 0.3-0. 5%; (2) the best doubling effect could be obtained during the period from the diplotene stage to the diakinasis stage, and the highest proportion was up to 40.6%; (3) considering giant pollen ratio and proportion of staminate-flower collection, the better treating frequency was 3 times; (4) giant pollen, which formed mainly from dyad and had bigger cell nucleus volume, was unreduced and hexaploid.
出处 《Agricultural Sciences in China》 CAS CSCD 2003年第3期304-307,F003,共5页 中国农业科学(英文版)
基金 supported by the National Natural Science Foundation of China(30070529)
关键词 PERSIMMON 2n pollen Chromosome doubling COLCHICINE MEIOSIS Persimmon, 2n pollen, Chromosome doubling, Colchicine, Meiosis
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