干旱区研究2018，Vol.35Issue(1)：165-170,6.DOI:10.13866/j.azr.2018.01.21
死亡植株对新疆野苹果种群遗传多样性的影响
Effect of Death Individual on the Genetic Diversity of Malus sieversii Population
摘要
Abstract
Malus sieversii is one of the national second-class protective plants and an important wild fruit germplasm resources.In this study,the M.sieversii population in Xinyuan County,Xinjiang was selected to research the genetic difference between the death and alive individuals of M.sieversii suffering from the serious diseases and insect pests than other populations,the effect of death individuals on the genetic diversity of M.sieversii was evaluated,and the genotypes of death and alive individuals were marked using the microsatellite markers.The results are as follows:① There was no significant genetic divergence between the death and alive individuals,which indicated that the death of M.sieversii was random and out of genetic correlation;② Genetic structure of M.sieversii population in Xinyuan was not significantly influenced by tree death.The level of genetic diversity decreased slightly after the tree death,but a lot of low frequency alleles were lost;③ During the future monitoring and evaluation of the change of M.sieversii genetic resources,the number of alleles (Na) was more suitable for effectively reflecting the variation of genetic resources than the indexes of genetic diversity.关键词
新疆野苹果(Malus sieversii)/种质资源/树木死亡/遗传多样性/微卫星标记/病虫害/新源县/新疆Key words
Malus sieversii/germplasm resources/tree death/genetic diversity/SSR/diseases and insect pests/Xinyuan County/Xinjiang引用本文复制引用
李宇秀,张宏祥..死亡植株对新疆野苹果种群遗传多样性的影响[J].干旱区研究,2018,35(1):165-170,6.基金项目
国家自然科学基金(31500271) （31500271）
中国科学院特色研究所主要服务项目(TSS-2015-014-FW-4-3)和中国科学院西部之光项目(XBBS-2014-18)资助 （TSS-2015-014-FW-4-3）
