Journal of Northern Agriculture ›› 2023, Vol. 51 ›› Issue (4): 1-10.doi: 10.12190/j.issn.2096-1197.2023.04.01

• Germplasm resources · Physiology and biochemistry •     Next Articles

Genetic diversity analysis of phenotypic traits in 99 barley germplasm resources

GUO Chengyu1, YI Fengyan1, FANG Yongyu1, SHI Zhidan1, LIU Fang2, ZHAO Heping2, DING Haijun1   

  1. 1. Grassland Research Institute,Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences,Hohhot 010031,China
    2. Forage Research Institute,Inner Mongolia Caodu Forage and Animal Production Limited Company,Hohhot 011500,China
  • Received:2023-06-29 Online:2023-08-20 Published:2023-11-07

Abstract:

【Objective】Identify the phenotypic traits of different types of barley germplasm resources,to provide basis for breeding practice.【Methods】The diversity of 8 qualitative traits including seedling habits,leaf posture,plant type,ridge type,awn type,awniness,naked/cover and grain color of 99 barley germplasm resources were analyzed by descriptive statistics.Using descriptive statistics,correlation analysis,cluster analysis,and principal component analysis,10 quantitative traits including plant height,growth period,tiller number,main spike length,main spike grain number,main spike grain weight,spike number per plant,grain number per plant,grain weight per plant and 1 000-grain weight were analyzed.【Results】 There were abundant variations in the 8 qualitative traits. The variation range of 10 quantitative traits was 9.08%-43.16%,among which the variation coefficient of main spike grain number was the highest,and the variation coefficient of growth period was the lowest. Correlation analysis showed that there were significant(P<0.05) or extremely significant(P<0.01)correlations among multiple traits of the 99 barley germplasm. The germplasm population was divided into 4 categories by cluster analysis. The 15 accessions in theⅠcategory had the characteristics of high stem,long main spike and long growth period. The 56 accessions in the Ⅱ category had the characteristics of low stalk,high spike number per plant,high tiller number and long main spike. The 26 accessions in theⅢcategory had the characteristics of high main spike grain weight,high main spike grain number and low 1 000-grain weight. There were 2 accessions in the Ⅳ category,characterized by high grain number per plant,high grain weight per plant,low 1 000-grain weight. Principal component analysis showed that the cumulative contribution rate of the three principal components reached 72.39%.【Conclusion】 There were abundant genetic variations in 18 phenotypic traits of 99 barley germplasm resources,which could be divided into 4 categories. Breeding selection could be based on group characteristics.

Key words: Barley, Germplasm resources, Phenotypic traits, Genetic diversity

CLC Number: 

  • S512.3