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variety evolution
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variety evolution
Encyclopedia
农学
品种演化
释
variety evolution
品种演化
在农业生产逐渐发展的背景下,人类依据生态环境、耕作条件以及自身需求的改变,通过逐代将驯化作物中利于个体生存和繁殖后代的变异进行选择累积,从而演变形成新的种、亚种、品种的过程。又称品种演变。
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left approximate limit
left Artinian ring
left Artinian semigroup
left associated element
left associatedness
left associate grammar
left associate of a matrix
left association
left associative element
left associator
left atrium
left auricle
left balanced functor
left balanced module
Left Bank Group
left-behind children
left-behind elderly
left-behind family
left-behind wife
left bimodule
left brachiocephalic vein
left bundle-branch block
left cancellable element
left cancellation
left cancellation law
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