粗厚山羊草细胞质普通小麦雄性育性光温反应的初步研究

A Preliminary Study on Photo thermo reaction of Male Fertility of Common Wheat Cultivars with Aegilops crassa Cytoplasm

对粗厚山羊草 (Ae.crassa)细胞质普通小麦异质系进行 2a人工控光试验及分期播种试验。结果表明 ,粗厚山羊草细胞质普通小麦异质系具有光敏雄性不育特性 ,温度对育性亦有一定效应 ;不同异质系的光周期敏感性与核供体品种的光周期敏感性相关 ;六倍体的粗厚山羊草细胞质异质系与四倍体异质系育性的光周期反应有差异 ,前者对光周期较为敏感 ;由于异质系育性的光周期反应是核质互作的结果 ,同时又受到温度的影响 ,因此 。

In this paper,photoperiod treatments and sowing experiments have been carried out at Northwest Agricultural University for two years.The result indicated that alloplasmic lines of Triticum aestivum cv. 772,7859,F 94-111 ,Xiaoyan 4 and D 2 Xiaoyan 4 with Aegilops crassa cytoplasm showed photo period sensitive male sterility. Photoperiod had main effects on fertility, and temperature had additional effects. Long photoperiod caused sterility,but if temperature was higher, it took longer photoperiod to convert fertility. Photoperiod sensitivity of alloplasmic lines had correlation with their nuclear donars. Male sterility was expressed as pistillody of stamens, pollen bearing, stamen regression and another indehiscence. Alloplasmic lines with hexaploidy Aegilops crassa cytoplasm showed difference with the same lines with tetraploidy cytoplasm. The former had a higher sensitivity to photoperiod. Because of nucleo cytoplasmic interaction, the alloplasmic lines showed different sensitivity to photoperiod variation. It is possible to select new male sterile lines suitable for different ecological conditions.