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1969年,Briggle以小麦品种Chancellor为轮回亲本,育成了形态特征和农艺性状与Chancellor相似而抗白粉病基因不同的近等基因系。由于它们具有近似一致的遗传背景,可消除因鉴别寄主遗传背景不同所致差异。因此各地利用这套近等基因系进行了有关小麦白粉病菌群体结构或生理分化的研究。本试验采用幼苗和成株期接种相结合,评价了各个近等基因系对本省白粉病的抗性水平。
In 1969, Briggle used the wheat variety Chancellor as the reincarnated parent to breed near-isogenic lines with morphological traits and agronomic traits similar to Chancellor and different resistance to powdery mildew. Because of their nearly identical genetic background, differences due to differences in the genetic background of the identified host can be eliminated. Therefore, this series of near isogenic lines were used to study the population structure or physiological differentiation of wheat powdery mildew. In this experiment, seedlings and adult inoculation were used to evaluate the resistance of each near-isogenic line to powdery mildew in this province.