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中国农学通报 ›› 2003, Vol. 19 ›› Issue (2): 89-89.

所属专题: 生物技术

• 目次 • 上一篇    下一篇

ZZWW型4倍体雌蚕减数分裂中的性染色体行为

ZZWW型倍体雌蚕减数分裂中的性染色体行为   

  • 出版日期:2003-04-25 发布日期:2003-04-25

The sex chromosome act in the meiotic division of ZZWW 4n femalesilkworm(Bombyx mori)

Chen Fusheng   

  • Online:2003-04-25 Published:2003-04-25

摘要: 用过冷却处理得到的ZZWW型4倍体雌蚕与ZZ型2倍体交配,根据亲、子代个体蚕的标记性状表现及性染色体数观察,探讨在减数分裂中ZZWW雌蚕的性染色体的联会、分配的行为方式和概率大小,推测ZZWW型4倍体雌蚕在减数分裂中的性染色体联会、分离的可能方式。拟为多倍体诱发机理的解析、交配后代表现的预测提供理论依据和为多倍体研究实用化开发提供有效途径。

关键词: 颗粒硅钙钾肥, 颗粒硅钙钾肥, 微孔矿物肥, 钾矿开发产品, 钾替代, 水稻

Abstract: The ZZWW 4n female silkworm was obtained of super-cooling. This 4n female was mated to ZZ 2n male silkworm. The expressively of mark gene and the number of sex chromosome in the parents and progeny were observed; the synapsis,distribution and probability of the sex chromosome of ZZWW female silkworm were discussed; and the synapsis,detachment probability of the sex chromosome of zzwwsilkworm female were presumed. We plant to offer the theoretic foundation to resolve the mechanism of the inducement of polyploid silkworm, to prognosticate the expressivity of their progeny and to provide an efficiency wayto study the polyploid practicality.