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pgr 2016, 3(1): 29-44 Back to browse issues page
Estimation of Genetic Correlation, Heritability and Grouping of Barley Doubled Haploid Lines Based on Indicators Related to Germination Under Salt Stress
Mohammad Ali Ebrahimi *, Rahim Mohammadian, Marouf Khalili
Abstract:   (15723 Views)
Estimation of genetic variation in crops, a very important role in the development of breeding programs and preservation of genetic resources through morphological characteristics, is possible. To identifying genetic variation and double haploid barley lines classification in relation to germination traits, 72 lines derived from the cross of Steptoe and Morex were evaluated in randomized complete block design (RCBD) with two replications, at three conditions including normal and two salinity levels of NaCl (100 and 200 mM NaCl). Investigated traits in this study were coefficient of velocity of germination, final germination percentage, mean germination daily, germination rate index and average germination speed. The results indicated that considerable genetic variation among genotypes in all traits. Genetical correlation based on average of the three environments indicated that high significant correlation exist (r= 0.85**) between the daily germination and final germination percentage. In this study, the highest value of phenotypic and genotypic variation coefficient, broad and narrow sense heritability and genetic gain were calculated for final germination percentag. Based on cluster analysis, barley genotypes were grouped into three categories and genotypes of the third cluster, were superior coefficient of variation of germination, germination percentage, germination rate and mean daily germination index, but had low a mount of germination rate. Therefore, the genotype of this group can be used in breeding for high germination percentage. Using principle component analysis; five traits were grouped in the form of two new variables that explained 99.061 percent of the total variance. Analysis biplot indicated that the genotypes of first group have a high percentage of germination index and germination index coefficients.
Keywords: Biplot analysis, Cluster analysis, Barley, Germination, Genetic correlation
Full-Text [PDF 642 kb]   (1962 Downloads)    
Type of Study: Research | Subject: Plant improvement
Received: 2017/05/10 | Accepted: 2017/05/10
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Ebrahimi M A, Mohammadian R, Khalili M. Estimation of Genetic Correlation, Heritability and Grouping of Barley Doubled Haploid Lines Based on Indicators Related to Germination Under Salt Stress. pgr. 2016; 3 (1) :29-44
URL: http://pgr.lu.ac.ir/article-1-87-en.html

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