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Evaluation on the resistance to aphids of wheat germplasm resources in China

机译：中国小麦种质资源对蚜虫的抗性评价

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A collection of more than 200 wheat lines from the main wheat-producing areas of China was evaluated for resistance to wheat aphids, using fuzzy recognition technique in five field experiments over 2 years. The results show?that susceptibility to wheat aphids was exhibited in most of the lines tested, and no immune and highly resistant lines to wheat aphids was observed. The average percentage of wheat germplasm lines with resistant, lowly susceptible, moderately susceptible and highly susceptible to aphid were 9.30, 23.15, 42.32, and 25.23%, respectively. 5 moderately resistant wheat germplasm lines to wheat aphids (Lantian18, Lantian20, Lantian22, Lantian00-30 and Shanmai175) were found in Jiangyou experimental station in 2009. More importantly, 2 wheat germplasm lines (Lantian20, Lantian22) with the continuous resistance to wheat aphid in the five experimental stations over 2 years were discovered. Although,?resistance of wheat germplasm lines had a close relation to their genetics and inheritance, we also found that the resistance of the same wheat germplasm lines was varied in different experimental stations. It would be helpful to make wheat germplasm selections for breeding programs, especially if they have unique genes that may provide resistance to future biotypes of wheat aphids. A valuable method for evaluating the potential of aphid-resistance for wheat germplasm lines was also confirmed.
机译：在2年中的5个田间试验中，采用模糊识别技术，对来自中国主要小麦产区的200多个小麦品系进行了抗小麦蚜虫抗性评估。结果表明，在大多数试验品系中均表现出对小麦蚜虫的敏感性，未观察到对小麦蚜虫具有免疫力和高度抗性的品系。具有抗性，低敏感度，中度敏感度和高度易感蚜虫的小麦种质系的平均百分率分别为9.30％，23.15、42.32和25.23％。 2009年江油试验站共发现5个对小麦蚜虫有适度抗性的小麦种质资源（蓝田18，蓝田20，Lantian22，Lantian00-30和Shanmai175）。更重要的是，有2个对小麦蚜虫具有连续抗性的小麦种质资源（Lantian20，Lantian22）。在五个实验站中发现了超过2年的时间。尽管小麦种质资源的抗性与其遗传和遗传有密切关系，但我们也发现同一小麦种质资源的抗性在不同的实验站中是不同的。为育种计划选择小麦种质将是有帮助的，特别是如果它们具有可能对小麦蚜虫的未来生物型产生抗性的独特基因。还确定了评价小麦种质资源抗蚜虫潜力的有价值方法。

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