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Occurrence and cytogenetic development of unreduced pollen in Vitis

文献类型： 外文期刊

作者： Zhang, XZ 1 ; Liu, GJ 1 ; Zhang, DM 1 ;

作者机构： 1.Hebei Acad Agr & Forestry Sci, Changli Inst Pomol, Hebei 066600, Peoples R China

关键词： Vitis;unreduced gametes;pollen;cytogenetics

期刊名称：VITIS （ 影响因子：1.339； 五年影响因子：1.306 ）

ISSN： 0042-7500

年卷期： 1998 年 37 卷 2 期

页码：

收录情况： SCI

摘要： Percentages of unreduced pollen (>40 mu m for tetraploids, >30 mu m for diploids) produced in 13 tetraploid V. labruscana x V. vinifera hybrid cultivars were higher than those in 11 of 14 diploid cvs and species (0.18-1.27 and 0.06-0.37 %, respectively). The production of 2x pollen was positively correlated to dyad formation during microsporogenesis, the frequency of dyad formation varied among cvs and flowers for 4x genotypes. Cytogenetic studies showed that the predominant mechanism of unreduced pollen production was first division restitution (FDR) accompanied by a lower proportion of co-orientation of second division spindles. The prospects of utilization are briefly discussed.

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