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在当前国内外农业生产上,农业生产水平高低的直接影响因素是农业经济效益,玉米是世界上重要的粮食作物之一,也是我国第三大粮食作物,其经济效益直接影响农业生产水平的高低。然而,异交不亲和性的利用是在玉米育种和生产方面提高亲本纯度、节约制种成本,提高经济效益的一种有效手段。因此研究选育性状优良配合力高的玉米异交不亲和系是其利用的前
In the current agricultural production both at home and abroad, the direct and influencing factor of the level of agricultural production is the economic benefit of agriculture. Corn is one of the most important grain crops in the world and the third largest grain crop in China. Its economic benefit directly affects the level of agricultural production . However, the use of out-of-ex-incompatibility is an effective means to improve the purity of parents, save the cost of seed production and improve economic efficiency in maize breeding and production. Therefore, the study of elite maize hybrids with high combining ability is the use of the former