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Characteristics of the meiosis in anthers of a sesquidiploid currant-gooseberry hybrid

机译:半倍体无核小葡萄干-醋栗杂种的花药减数分裂特征

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摘要

The microsporogenesis in a sesquidiploid (2n = 24) currant-gooseberry hybrid 2034 is studied. The hybrid resulted from crossing of a currant-gooseberry amphidiploid with a Ribes nigrum variety. Disturbances were observed through all the stages of both the first and the second meiotic divisions due to a low conjugation of non-homologous chromosomes and to a haotic behavior of the gooseberry chromosomes. As a result, about 90 percent of aneuploid pollen with a low viability is formed.
机译:研究了倍半倍体(2n = 24)醋栗-醋栗杂种2034的微孢子发生。杂种是由醋栗-猕猴桃的二倍体与Ribes nigrum品种杂交产生的。由于非同源染色体的低共轭和醋栗染色体的混沌行为,在第一和第二个减数分裂分裂的所有阶段都观察到了干扰。结果,形成了约90%的低生存力的非整倍体花粉。

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