二棱大麦种质资源产量相关性状的遗传多样性分析及综合评价  

Genetic Diversity Analysis and Comprehensive Evaluation of Yield Related Traits in Two-rowed Barley Germplasm Resources

作　　者：宋俊良 李建波 刘志萍 孙浩 毛文跃 巴图 吕二锁 马宇 杜慧婷 徐寿军[1,2] SONG Junliang;LI Jianbo;LIU Zhiping;SUN Hao;MAO Wenyue;Batu;LYU Ersuo;MA Yu;DU Huiting;XU Shoujun(College of Agriculture,Inner Mongolia Minzu University,Tongliao 028043,China;Inner Mongolia Crop Forage Engineering Center,Tongliao 028000,China;Institute of Crop Breeding and Cultivation,Inner Mongolia Academy of Agriculture and Animal Husbandry Sciences,Hohhot 010000,China)

机构地区：[1]内蒙古民族大学农学院,内蒙古通辽028043 [2]内蒙古饲用作物工程技术研究中心,内蒙古通辽028000 [3]内蒙古自治区农牧业科学院作物育种与栽培研究所,内蒙古呼和浩特010000

出　　处：《内蒙古民族大学学报（自然科学版）》2023年第5期428-437,共10页Journal of Inner Mongolia Minzu University：Natural Sciences

基　　金：内蒙古自治区自然科学基金项目(2021BS03035);内蒙古自治区科技计划项目(2021GG0007);内蒙古民族大学博士科研启动基金项目(BS569)。

摘　　要：为筛选综合性状优异的二棱大麦种质,以216份大麦种质资源为试验材料,通过相关分析、主成分分析、聚类分析等方法进行综合评价。结果表明:单株粒质量、单株粒数、分蘖数、主穗长等性状变异系数较高,千粒质量、株高、主穗粒数、主穗粒质量等性状变异系数较低,总体变异系数在7.91%~22.04%之间,多样性指数在1.90~2.08之间,千粒质量、穗下节间长、株高等性状遗传多样性较高;相关分析结果表明,多个性状间具有相互作用,主穗长与主穗粒数、主穗粒质量显著正相关,单株穗数与单株粒数、单株粒质量显著正相关,主穗粒质量与单株粒质量显著正相关。基于主成分分析的综合评价和聚类分析,将216份二棱大麦分为4类,第Ⅰ类表现为高秆、穗粒数多,第Ⅱ类高秆、穗长、分蘖力强,第Ⅲ类矮秆、穗粒数、粒质量较低,第Ⅳ类矮秆但穗下节间较长,其余性状较低。In order to screen two-row barley germplasm with excellent comprehensive traits,216 barley germplasm resources were selected as experimental materials,and comprehensive evaluation was carried out by correlation analysis,principal component analysis and cluster analysis.The results showed that the coefficient of variation of traits such as grain weight per plant,grain number per plant,tiller number and main panicle length was high,while the coefficient of variation of traits such as thousand grain weight,plant height,main panicle number and main panicle weight was low,with the overall coefficient of variation ranging from 7.91%to 22.04%.The diversity index ranged from 1.90 to 2.08,and the genetic diversity of 1000-grain weight,subpanicle internode length and plant height was higher.The results of correlation analysis showed that there were interactions among the characters.The main panicle length was positively correlated with the number of grains per panicle and the weight of grains per panicle,the number of panicle per plant was positively correlated with the number of grains per plant and the weight of grains per plant,and the weight of grains per panicle was positively correlated with the weight of grains per plant.Based on the comprehensive evaluation and cluster analysis of principal component analysis,216 two-row barley were divided into 4 classes.ClassⅠshowed high culm and more grains per ear,classⅡshowed high culm,ear length and strong tillering ability,classⅢshowed low grain number per ear and grain weight,and classⅣshowed low traits but longer internode under ear.

关 键 词：大麦 多样性指数 相关分析 聚类分析 

分 类 号：S512.3[农业科学—作物学]