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利用第一代杂种的生长优势以提高作物产量的办法是劳动人民在长期生产实践中的创造。在粮食作物中玉米和高梁是最有成效的。但优势杂种一般都是在大量杂交组合与数年田间实验的基础上获得的。因之需要一种简单有效的方法预测亲本组合的杂种优势程度,从而可以减少选种的劳力与时间。McDaniel 和 Sarkissian(1966)在前人研究的基础上发表了他们用线粒体互补法预测玉米杂种优势,这个方法不需要经过田间实验就可以预测两个自交系亲本之间在杂交后能否产生优势杂种。可以产生优势杂种的亲本线粒体等比混合后,其氧化与磷酸化活性均高于亲本。
The way to use the growth superiority of first-generation hybrids to increase crop yields is the creation of working people in long-term production practices. Corn and sorghum are most effective in food crops. But the dominant hybrids are generally obtained on the basis of a large number of cross combinations and several years of field experiments. There is therefore a need for a simple and efficient way of predicting the heterosis of the parental combinations, thereby reducing the labor and time of selection. Based on previous studies, McDaniel and Sarkissian (1966) published their prediction of maize heterosis using mitochondrial complementation. This method can be used to predict whether two inbred parents can produce advantages after crossing Hybrid. After mixing the parental mitochondria, which can produce dominant hybrids, their oxidative and phosphorylation activities were higher than that of their parents.