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植物育种家了解植物对其主要病虫害的抗性知识是相当重要的。本研究的目的是确定3个黑麦品系(×Trili■le Wittmaek)对苏联小麦蚜虫(RWA),Di■rapis ■cia(Mordvilko)的抗性遗传情况,这3个抗性品系(Pl 386148,Pl 386149和Pl 386156)已肯定是RWA的杰出抗源。首先让这3个抗性品系互交.同时,又把Pl 386148,Pl 386149和Pl 386156与3个敏感品种TX 33000,NE 83T12和Lasko进行杂交。在温室条件下对其亲本、杂种F-1、F_2以及反交群体人为感染RWA并进行鉴定。数据表明,对RWA的抗性是受单显性基因控制.抗性×抗性杂交种的F_2缺乏敏感度的分离表明这些品系的抗性基因很可能位于普通位点.当用抗RWA其它基因确定小麦和黑麦的等位关系之后就可以对这些抗性基因定义。
It is important for plant breeders to understand the plant’s resistance to its major pests and diseases. The purpose of this study was to determine the genetic inheritance of the resistance of the three rye lines to Trichoderma viride (RWA), Di rapis cia (Mordvilko) in the three rye lines (Pl 386148, Pl 386149 and Pl 386156) have certainly been a prominent source of resistance to RWA. The three resistant lines were crossed first, and Pl 386148, Pl 386149 and Pl 386156 were crossed with three susceptible varieties TX 33000, NE 83T12 and Lasko. RWA was identified and identified as human in hybrids, hybrids F-1, F 2, and retroviral populations in greenhouse. The data indicate that resistance to RWA is controlled by a monogenic dominant gene.Separation of F 2 -sensitive susceptibility of resistant × resistant hybrids suggests that the resistance genes of these lines are likely to be located at a common site.When other genes resistant to RWA These resistance genes can be defined after determining the allelic relationship between wheat and rye.