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对不同纬度地区广州(23°08＇N)、福州(26°05＇N)、长沙(28°12＇N)、杭州(30°19＇N)、南京(32°N)和沈阳(41°49＇N)的光温生态对光、温敏不育性的选择压作了初步分析。结果表明,在不考虑温度因素的前提下,对光敏不育的选择压从南到北渐增,而对光敏可育的选择压渐减,在不考虑日长的前提下,对温敏不育的选择压除沈阳外,其余5个地点差异不大,对长日低温不育和短日高温可育光敏型不育系的选择压,在分析的6个地点中,没有一个是非常具备的。通过对各地育成的101份不育系的育性转换光温反应型的分类,分析了在不同生态选择压下的育种成效。讨论了改单一环境下选择为多点多环境下选择和在人工控制选择压下进行有目的的选择的重要性。
In different latitudes, Guangzhou (23 ° 08’N), Fuzhou (26 ° 05’N), Changsha (28 ° 12’N), Hangzhou (30 ° 19’N), Nanjing (32 ° N) and Shenyang ° 49’N) light and light ecological light and temperature-sensitive sterile selection made a preliminary analysis. The results showed that under the premise of not considering the temperature, the selection pressure of photo-induced sterility increased from south to north, while the selection of photo-fertility decreased gradually. Without considering the long-term, Except for Shenyang, the other five locations were not significantly different. The selection pressure on long-term low-temperature sterile and short-day high-temperature fertile photosensitizer-type CMS was none of the six locations analyzed. of. Based on the classification of fertility-transformed photothermal response types in 101 sterile lines, the breeding effects under different ecological selection pressure were analyzed. The importance of choosing a single choice for a multi-point, multi-environment and a purposeful choice of manually controlled choice depression is discussed.