【摘 要】
：
1988—1989年利用黄早4姊妹系进行了选育改良单交种和提高制种产量的研究。结果表明:黄早4姊妹种普遍存在着杂种优势,姊妹种与黄早4相比,植株变高,雄穗发达,抗病性增强,穗部
【机 构】
：
河南农业大学农学系,河南农业大学农学系
论文部分内容阅读
1988—1989年利用黄早4姊妹系进行了选育改良单交种和提高制种产量的研究。结果表明:黄早4姊妹种普遍存在着杂种优势,姊妹种与黄早4相比,植株变高,雄穗发达,抗病性增强,穗部性状有所改进,产量明显提高,增产幅度在45%～105%之间。配合力分析结果表明,不同姊妹种间的一般配合力和特殊配合力存在着明显差异,可以从中选出比黄早4配合力高的优良姊妹种,用其组配的改良单交种的产量与对应单交种产量持平或略有提高,并且若干性状有所改良。用姊妹种代替黄早4配制改良单交种,可以显著提高制种产量。
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