Comparison of genetic variability between selected populations and primitive populations of six wheat varieties;
六个小麦品种的选择种群与原始种群间遗传变异性的比较
The three main reasons of the rapid extinction for small populations are the loss of the genetic variability, the demographic fluctuation and the environment diversity or the natural disasters.
小种群迅速灭绝的三个主要原因是遗传变异性丧失、统计波动以及环境变化或自然灾害。
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