小麦多子房性状外显率影响因子的初步研究  

Study on Factors Influencing Penetrance of Multi-ovary in Wheat

作　　者：张国慧[1] 张改生[1] 葛锋辉[1] 牛娜[1] 马守才[1] 潘栋梁[1] 汪奎[1] 

机构地区：[1]西北农林科技大学,陕西省作物杂种优势研究与利用重点实验室/小麦育种教育部工程研究中心,杨凌712100

出　　处：《植物遗传资源学报》2008年第4期528-530,共3页Journal of Plant Genetic Resources

基　　金：陕西省“13115”科技创新工程重大科技专项(2007ZDKG-020);国家杨凌农业生物技术育种中心专项基金(99-1A);西北农林科技大学拔尖人才支持计划项目

摘　　要：为了提高杂交小麦的繁制种效益,选用具有不同山羊草细胞质的同质同核、同质异核、异质同核多子房小麦为试验材料,于成熟期调查多子房外显率,并用DPS 7.05专业数据处理软件对调查结果进行方差分析,研究了多子房外显率表达的影响因素。结果表明,具有相同细胞核和细胞质背景的多子房小麦,各小花内第一、二、三粒子粒多子房外显率表达效应无显著差异;异质同核背景下的多子房外显率的表达效应也无显著差异;相同细胞质不同细胞核背景下的多子房外显率的表达效应达到显著水平。因此,欲提高小麦多子房性状表达的外显率,选择合适核型至关重要。In order to enhance the seed production efficiency of hybrid wheat, the muhi-ovary varieties of homonucler-homoplasmic, heteronucler-homoplasmic and homonucler-heteroplasmic with different Aegilops cytoplasmic were used as the trial material. The penetrance of multi-ovary varieties was investigated in the mature, and the analysis of variance was made using professional data processing software DPS 7.05 for the results. It was showd that the first, second, third grain per floret of homonueler-homoplasmic and homonucler-heteroplasmic multi-ovary wheat have no significant differences in penetrance. However, the penetrance of homoplasmic-heteronucler multi-ovary wheat reached significant levels. The suitable nuclear gene type is very important to raise the penetrance of multi-ovary.

关 键 词：小麦 多子房 外显率 影响因子 

分 类 号：S512.1[农业科学—作物学]