异属花粉诱导小麦孤雌生殖的假受精研究  

Pseudogamy Property of Wheat ParthenogenesisInduced by Distant Hybridization

作　　者：苗芳[1] 董安书[1] 曹翠玲[1] 

机构地区：[1]西北农业大学基础科学系

出　　处：《西北农业大学学报》1999年第3期90-93,共4页Journal of Northwest Sci-Tech University of Agriculture and Forestry（Natural Science Edition)

摘　　要：采用延迟授粉和胚胎学显微观察的方法，研究了黑麦和六倍体小黑麦花粉诱导小麦孤雌生殖的假受精特性。结果表明：①用六倍体小黑麦花粉授粉，精子进入胚囊的频率高于黑麦花粉；②受粉后２ｈ，一个精核已进入卵细胞质中，极少数精核能够刺激卵细胞单性分裂形成胚；③极核正常受精后形成胚乳。The study on pseudogamy property of wheat parthenogenesis is conducted by means of delaying pollination and observing embryo sac with microscope.The results indicate that: the frequency of sperms with hexaploid triticales entering wheat embryo sac is higher than that of ryes; two hours after pollination,one sperm enters egg cell cytoplasm and egg cell parthenedivision can be stimulated by few sperms; and one sperm can be fused with polar neclei to form endosperm.

关 键 词：花粉诱导 小麦 育种 孤雌生殖 假受精 

分 类 号：S512.103.5[农业科学—作物学]