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俄罗斯小麦蚜虫（Ｄｉｕｒａｐｈｉｓｎｏｘｉａ）是大麦的一种灾害性害虫。最近在大麦生产中推广的品种ＳＴＡＲＳ－９３０１Ｂ是一个最为突出的抗源材料，用它在温室内进行研究，目的是确定抗蚜性的基因控制。１９９２－１９９３年对Ｍｏｒｅｘ（一个易感麦蚜的啤酒大麦品种）和ＳＴＡＲＳ—９３０１Ｂ进行杂交，并对亲本、Ｆ１、反交Ｆ１、Ｆ２回交群体以及２３１个Ｆ３株系进行了遗传分析。Ｆ２及回交群体的分离结果表明抗性是受多基因控制的，而抗蚜的１４个Ｆ３纯合株系和１６个Ｆ３纯合中抗株系可以表明ＳＴＡＮＳ—９３０１Ｂ的抗性是受两个基因控制的。对Ｆ２回交后代及双亲的资料进行分析，结果表明显性基因（Ｄｎｂ２）对不完全显性基因（Ｄｎｂ１）具有稳定性上位作用，这种形式的基因控制在育种当中每一轮进行抗性筛选是非常重要的。
Russian wheat aphid (Diuraphisnoxia) is a catastrophic pest of barley. The recently introduced variety STARS-9301B, which is being promoted in barley production, is one of the most prominent source materials for anti-infectives and has been used in a greenhouse for the purpose of determining gene control of aphid resistance. 1992-1993 Hybridization of Morex, a barley malting aphid beer barley with STARS-9301B, and the genetic analysis of the parents, F1, the F1, F2 backcross populations and 231 F3 lines. The segregation results of F2 and backcross populations showed that the resistance was controlled by polygenes while the 14 F3 homozygous lines and 16 F3 homozygous resistant lines against the aphids could indicate that the resistance of STANS-9301B was affected by two Gene control. The data of F2 backcross progeny and their parents were analyzed. The results showed that Dnb2 has a stable up-regulated effect on the Dnb1 gene. This form of gene control resists resistance in each round of breeding Screening is very important.