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培育和利用抗病品种,是预防小麦锈病最重要、最经济有效的措施,在历史上曾获得很大的成功。由于对亲本的抗锈基因和病原物的毒性基因了解不够,常把相同的抗病基因引入不同的品种中,所育成的品种大面积推广后,导致小麦生产品种抗病基因遗传上的同质性。在一定的时间和空间上大面积连续种植相同抗源的品种,对病原物群体形成强大的选择压力,当产生能克服小麦抗锈基因的毒性小种后,新小种便得以良好的哺育而迅速发展,引起生产品种丧失抗锈性,造成病害的大流行。
Cultivating and utilizing disease-resistant varieties is the most important and most economical and effective measure to prevent wheat rust, and has achieved great success in history. Due to insufficient understanding of the virulence genes and pathogenic virulence genes of the parents, the same resistance genes are often introduced into different varieties. After the widespread breeding of the cultivated varieties, the genetic homogeneity of the resistance genes of wheat cultivars Sex. In a certain time and space for a large area of continuous cultivation of the same resistance varieties, the pathogen groups to form a strong selection pressure, when produced to overcome the wheat rust-resistant genes of races, the new races will be able to feed well Rapid development, causing the loss of rust-proof variety of products, resulting in a pandemic disease.