西北植物学报2024，Vol.44Issue(1)：112-121,10.DOI:10.7606/j.issn.1000-4025.20230473
燕麦种质资源形态学性状的遗传多样性
Analysis of the genetic diversity of morphological traits of oat germplasms
摘要
Abstract
[Objective]The study of genetic diversity in oat germplasm resources not only contributes to the collection and evaluation of germplasm resources,but also has important guiding significance for the pro-duction and breeding of oats.[Methods]This study analyzed the diversity,variation,and clustering of 20 morphological traits in 260 oat germplasm resources,evaluated the genetic variation level of their morpho-logical traits,and examined the traits and genetic diversity of oat germplasm resources,aiming to provide a basis for oat germplasm innovation and variety improvement.[Results]There was a significant genetic diversity of morphological traits in the 260 oat germplasm resources.The genetic diversity index of the qualitative traits was the highest in grain color(1.53)and the lowest in awn color(0.76).The genetic di-versity index of the 12 quantitative traits was normally distributed,and that of the quantitative traits was the largest in thousand grain weight(2.03)and the smallest in effective tillers(1.22).The highest varia-ble coefficient was the effective tillering number(89.02％),while the lowest was the plant height(11.19％).According to genetic difference of each characteristic varieties,the 260 accessions should be classified into 6 categories by cluster analysis.Germplasm group Ⅰ included 42 accessions which could be used as parent materials for seed type selection.Germplasm group Ⅱ had 31 accessions that could be used as parent materials for breeding high-yield forage varieties.Germplasm group Ⅳ includes 41 accessions that could be used for breeding large grain varieties.Germplasm group V includes 46 accessions that could be used as parents for oat dwarfing.Germplasm group Ⅲ included 46 accessions and group Ⅵ included 54 accessions,and both were not outstanding in comprehensive characters analyzed.[Conclusion]This study could provide theoretical basis for the protection,development and utilization of oat germplasm resources in eastern Inner Mongolia.关键词
燕麦/种质资源/形态学性状/遗传多样性Key words
oat/germplasm resource/morphological traits/genetic diversity分类
农业科技引用本文复制引用
孙艳楠,路耿新,李冠义,王欣欣,唐超..燕麦种质资源形态学性状的遗传多样性[J].西北植物学报,2024,44(1):112-121,10.基金项目
国家现代农业(燕麦荞麦)产业技术体系建设专项(CARS-07-G-18) （燕麦荞麦）
内蒙古自治区科技重大专项(2021SZD0017) （2021SZD0017）
