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1、杂交高梁混杂的根本原因是由于生物学混杂,使不育系、保持系遗传基因发生变化而产生了表现型相似、基因型不同的杂合体所致。2、鉴定亲本的纯度应当包括不育系育性的高低,典型性是否一致和配合力的大小这样三个内容。当前尤需加强对典型性的选择和不育系配合力的测定。3、建立健全鉴定制度,并采取相应的奖惩办法,把技术要求和制种单位的经济利益结合起来,是提高杂交高粱纯度的保证。
1, The basic reason for hybrid hybrid sorghum is due to the biological hybrid, so that the male sterile line, maintaining the Department of genetic changes have a similar phenotype, genotype caused by heterozygotes. 2, the identification of the purity of the parent should include the level of sterile fertility, the typical consistency and the size of the three such content. In particular, the current need to strengthen the typical selection and determination of the ability of CMS. 3, establish and improve the identification system, and take appropriate incentives and punishments, the technical requirements and the economic interests of seed production units together, is to improve the purity of hybrid sorghum guarantee.