作物杂志Issue(5)：147-154,8.DOI:10.16035/j.issn.1001-7283.2025.05.020
宁夏春小麦品种(系)农艺性状遗传多样性分析
Genetic Diversity Analysis of Agronomic Traits of Spring Wheat Varieties(Lines)in Ningxia
摘要
Abstract
In order to explore the agronomic trait diversity level of spring wheat varieties(lines)in Ningxia,multiple agronomic traits of 63 varieties(lines)approved in Ningxia from 1979 to 2020 were analyzed by variation coefficient,Shannon-Wiener index(H′)and cluster analysis.The results showed that the spring wheat varieties(lines)in Ningxia from 1979 to 2020 were mainly long awn and red grain,the types of tipped-awn and white grain were few.The H′ of plant height was the largest,and that of grain length to width ratio was the smallest.Through cluster analysis,the cultivated varieties(lines)in Ningxia were divided into six groups,with a maximum Euclidean genetic distance of 5.88 and an average H′ of 1.59.GroupⅠ and Group Ⅱ each contained only one variety,whereas Group V contained 45 varieties(lines),accounting for 71.4%of the total varieties.The results indicated a relatively narrow genetic base.Compared with Ningchun 4,most spring wheat varieties(lines)bred in Ningxia had not achieved a noticeable increase in grain yield.However,the cultivated varieties(lines)bred since 2015 have shown certain improvements in plant morphology,early maturity,and several economic traits.These improvements were primarily characterized by earlier maturity,significantly reduced plant height,and significant increase in grains per main spike,main grain weight,and harvest index,as well as a large increase in yield.关键词
宁夏/春小麦/农艺性状/遗传多样性分析/品种(系)Key words
Ningxia/Spring wheat/Agronomic trait/Genetic diversity analysis/Variety(line)引用本文复制引用
吴立国,李晓慧,赵清,陈小龙,潘静,刘旺清,白海波,李前荣..宁夏春小麦品种(系)农艺性状遗传多样性分析[J].作物杂志,2025,(5):147-154,8.基金项目
国家自然科学基金(31960428) （31960428）
宁夏自然科学基金(2021AAC03251) （2021AAC03251）
国家重点研发计划(2021YFD1900603) （2021YFD1900603）
宁夏回族自治区农业育种专项(2018NYYZ02) （2018NYYZ02）
宁夏农业科技自主创新专项科技创新引导项目(NKYG-24-02) （NKYG-24-02）
