温光型核不育系小麦C49S的育性转换和适应性分析

Analysis for Fertile Changes and Adaptability of Wheat C49S under Different Ecological Environment

通过不同生态点的分期播种试验，观察Ｃ４９Ｓ的生育特性及育性转换特性，发现在较大生态区范围内Ｃ４９Ｓ具有较强的育性稳定性和生态适应性。该不育系的播种至抽穗历期与纬度和海拔无明显关系。温度是诱导育性转换的主导因素，同时提出其制种和繁殖的适宜时期。

Observing characteristic and fertile changes of wheat C94S by different sowing date test, results is as follows: ① C49S is of fertile stability and ecological adaptability in broader ecological region; ② Sowing to heading period of wheat sterile line has no relation to latitude and elevation; ③ Temperature is a major factor of fertilte changes, and the author put forward the proper time of hybrid seed production and propagation.