新疆野扁桃五个自然分布居群S基因型的鉴定及发生频率分析

发布时间：2018-01-20 12:40

本文关键词： 新疆野扁桃自交不亲和性 S基因型频率　出处：《北方园艺》2017年10期 　论文类型：期刊论文

【摘要】：以新疆野扁桃5个自然分布居群的150个株系为试材,采用生物统计学的方法,研究了新疆野扁桃5个自然分布居群的S基因类型及其发生频率。旨在为新疆野扁桃资源的有效保护与合理利用及该物种自交不亲和性进化机理提供科学依据。结果表明:在受试株系中共鉴定出6个S-RNase基因,S基因型有11种类型,各基因型组成在不同居群中的存在比率是不均等的,有占主导地位的S基因型;还有一些S基因型是某个居群特有的;也有一些S基因型出现的比率很低,变化差异较大;表明S-RNase基因经历了一定的进化历程。
[Abstract]:In this paper, 150 strains of wild almond in Xinjiang were collected from 5 natural populations, and biostatistical method was used. The S gene types and their occurrence frequency of five natural populations of wild almond in Xinjiang were studied in order to provide scientific basis for the effective protection and rational utilization of wild almond resources and the evolution mechanism of self-incompatibility of this species. The results show that:. A total of 6 S-RNase genes were identified in the tested lines. There are 11 types of S genotypes, and the existence ratio of each genotype in the non-cohabiting group is not equal, and there are dominant S-genotypes. Some S genotypes are specific to a population. There were also some S genotypes with low occurrence rate and great variation. These results indicate that the S-RNase gene has undergone a certain evolutionary process.
【作者单位】：新疆农业大学林学与园艺学院;新疆农业大学果树学新疆特色果树研究中心;中国林业科学院新疆分院;
【基金】：国家自然科学基金资助项目(31660557,31260465) 新疆维吾尔自治区果树学重点学科资助项目(201007)
【分类号】：S662.9
【正文快照】： 蔷薇科果树植物表现为配子体自交不亲和性,由单一S位点复等位基因控制,该位点包括花柱S-RNase基因和花粉SFB基因,表现为相同S基因型品种(系)间或者自花授粉时不能结实,而不同S基因型的品种(系)间相互授粉可以正常结实[1-3]。近年来,国内外利用蔷薇科植物自交不亲和性保守区序

【相似文献】