There is adequate variability in plants to breed for resistance to certain aphid vectors.
植物有充分的变异性可用于培育对一些蚜虫介体的抗性。
However, the resistance of cultivars is easily loss due to the high genetic variability of isolates. Mining durable resistance genes has become a key problem in disease resistant breeding.
然而，由于大豆疫霉菌小种的高度变异性导致品种抗性极易丧失，挖掘持久性抗病基因已成为抗病育种的难题。
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