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通过对玉米杂交种西农 1 1号的亲本 WN11与西黄改进行的播期试验和雌、雄穗分化观察 ,掌握了两个自交系的穗分化及吐丝、散粉规律 ,明确了自交系 WN11雌雄不协调及西农 1 1号正、反交制种均需先播母本的内在原因 ,确定了西农 1 1号正、反交制种播期调节及花期预测的叶龄指标。
Through the sowing date test and female and male spike differentiation of WN11 and Xanthomonas japonica var. Xinong No.1 maize hybrids, we got the spike differentiation and loose-spinning rules of two inbred lines, Interspecific male-male incompatibility of WN11 and the internal and external causes of positive and negative crossbreeding of Xinnong 1 1 were determined. The leaf ages of sowing date index.