The genetic diversity of Castanea mollissima and the effect of artificial selection.
The genetic diversity of Castanea mollissima and the effect of artificial selection.
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板栗遗传多样性及人工选择效应.
DOI：
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发表时间：
1998
期刊：
影响因子：
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通讯作者：
Liu Liu
中科院分区：
文献类型：
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作者：
Z. Hui;Liu Liu
采用淀粉凝胶电泳技术，对板栗9个居群的11个酶系统的12个等位酶位点进行了遗传变异研究。遗传多态性和群体分化程度以C.多态位点比例（P）为71.3%，平均等位基因数（A）为2.27，平均期望杂合度（He）为0.346。89.3%的遗传变异分布在居群内。遗传距离在0.010~0.177之间。此外，对等位基因频率数据进行主成分分析，揭示了板栗遗传变异的空间格局，为板栗遗传标记的筛选提供了依据。本文在前人研究的基础上，探讨了人工选择对红腹锦鸡儿遗传多样性的影响。通过对板栗遗传多样性的研究，推测西南地区可能是板栗遗传多样性的中心。
Allozyme genetic variability in 9 populations of Castanea mollissima was investigated using starch gel electrophoresis at 12 loci coding for 11 enzyme systems. The level of genetic polymorphismand population differentiation was greater in C. mollissima than was usual for an outbreeding species, with the proportion of polymorphic loci (P) 71.3%, average number of alleles (A) 2.27, average expected heterozygosity (He) 0.346. About 89.3% of the total genetic variation was partitioned within populations. The Nei's genetic distance ranged from 0.010～0.177. Except for these, a principal components analysis of the data based on allelic frequencies revealed a spatial pattern of genetic variability in Chinese chestnut and provide some data about selecting enzyme marker. Based on previous research, the effect of artificial selection on the genetic diversity of C. mollissima was also studied and it could be inferred that the southwest area of China was the possible center of the genetic diversity.