1、

A variety of physiological species and the quick evolution of the physiological species usually res-ult in loss of resistant characteristics of a new rice variety with single resistant gene in some yea-rs after its expansion.

稻瘟菌的生理小种众多,致病性快速演化,带单个抗性基因的水稻新品种往往推广若干年后就失去抗病能力。

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2、

The MHC genes are highly polymorphic and the research hot point in the origin and evolution of species and the disease resistant breeding.

MHC中的基因具有丰富的多态性,是物种起源、进化和动物抗病育种的研究重点之一。

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3、

While the genome shows where this fruit fits in the history of plant evolution, it could also help researchers understand why DH-Pahang, unlike its descendant, is resistant to the funguses behind both Panama and black leaf streak disease.

既然基因组能显示出水果在植物进化史上的地位,那么也能帮助研究人员了解为什么DH-Pahang能够抵抗黄叶病毒和黑色条斑病毒。

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4、

Scorpions are very resistant and are relatively unchanged throughout their evolution due to their already perfect form.

蝎子抵抗力强,并且突变相对较少,因为它们的生命形态已相对完美了。

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