内蒙古春小麦亲本资源表型性状遗传多样性分析

doi:10.12190/j.issn.2096-1197.2020.03.01

Abstract

Abstract: 【Objective】To clarify the genetic diversity of spring wheat parent resources and improve the utilization efficiency of breeding parents in Inner Mongolia.【Methods】The genetic diversity of phenotypic traits of 70 breeding parental resources from Inner Mongolia in recent years was analyzed by using a completely random block design.【Results】The parental resources of different ecological areas in eastern and western Inner Mongolia were significantly different among species and locations （P<0.01）.The diversity index of phenotypic traits ranged from 1.72 to 2.08,and the diversity index of 1 000-grain weight was the largest（2.08）.The diversity index of the growth period was the lowest（1.72）.That of other phenotypic traits was in the middle.Correlation analysis showed that yield per plant was positively correlated with 1 000-grain weight （P<0.001）,but negatively correlated with quality-related traits.Cluster analysis was performed on 70 parental resources based on phenotypic traits.At the chi-square distance of 3.0,70 parent resources could be divided into 4 groups.The fourth group could be divided into two subgroups,and the main difference was in quality character.【Conclusion】The characters of 70 parental resources of quinoa had abundant variation and extensive diversity.It could provide important reference for the selection and matching of targeted parental resources with different breeding objectives by genetic diversity analysis.

Key words: Inner Mongolia, Spring wheat, Parental resources, Phenotypic traits, Genetic diversity, Clustering analysis

CLC Number:

S512

CUI Guohui, YE Jun, WU Xiaohua, YANG Lei, WANG Xiaobing, TAN Liping, YU Meiling, ZHAO Chunzhi, ZHANG Chunyan, ZHANG Haibin, WU Yunxia, LI Yuanqing. Genetic diversity analysis of phenotype traits of spring wheat parental resources in Inner Mongolia[J].Journal of Northern Agriculture, 2020, 48(3): 1-9.

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Genetic diversity analysis of phenotype traits of spring wheat parental resources in Inner Mongolia

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