Genetic bottleneck

The results indicate high levels of genetic diversity within populations and no signs of severe genetic bottleneck effects were found in this rare species .

结果表明太行花居群内维持着较高的遗传多样性水平，未显示遭受过严重遗传瓶颈的迹象。

The results indicate that Chinese waxy maize experienced a genetic bottleneck during its improvement , and improvement selection combined with a demographic effect should have contributed to the loss of genetic diversity on wx gene .

这些结果表明糯玉米在遗传改良过程中经历了瓶颈效应，加之人工选择，一起造成wx基因多态性的丢失。

Although the populations from Yunyang and Pingguo may have experience a short-term genetic " bottleneck effect " due to overfishing and other factors , it did not affect their level of genetic diversity .

其中，虽然云阳群体和平果群体可能由于过度捕捞等因素的影响存在过短期的遗传瓶颈效应，但并未对其遗传多样性的水平造成影响。