Plant Genetic Research
Scientific Journal

Evaluation of Genetic Diversity and Estimation of Heritability and Genetic Correlation Using REML for Different Traits in Grass Pea (Lathyrus sativus L.) Genotypes

Document Type : Original Article

Authors

Ali Dowlatshah 1
Ahmad Ismaili 1
Hadi Ahmadi 1
Karim Khademi 2
Daryoush Goodarzi 3

1 Department of Plant Production and Genetic Engineering, Faculty of Agriculture, Lorestan University, Khorramabad, Iran

2 Lorestan Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Khorramabad, Iran

3 Department of Plant Production and Genetic Engineering, Faculty of Agriculture, Lorestan, Khorramabad, Iran

‎20.1001.1.23831367.1399.7.2.13.2
Abstract
Plant breeding researches is based on genetic diversity and evaluation of genetic diversity is also one of
the most important steps in introduction of new cultivars. In this study, genetic diversity of 25 grass pea
genotypes was studied based on randomized complete block design with three replicates in
Khorramabad (Iran). Analysis of variance showed significant differences among genotypes for most of
traits. Mean comparison showed that genotype IF1312 with the highest grain yield and genotypes
IF1332 and IF471 with the highest dry and fresh forage yield had the best yield. Principal component
analysis showed that the first 3 factors explained 62.64% of total variance. Based on cluster analysis,
genotypes IF1307, IF1872 and IF471 with the highest grain and forage yield are belonged to one cluster.
REML method was used to estimate genetic correlation and heritability of different traits. The highest
amount of heritability (0.87) was estimated for number of immature grains and the least heritability
(0.10) was estimated for total dry weight. Grain yield had a high and positive genetic correlation with
forage yield, and biomass, percentage of leaf and dry forage yield also had a high and positive genetic
correlation with fresh forage yield. Totally, genotype IF1307 had the best performance for most of traits
compared to the other genotypes and had an acceptable forage yield among genotypes.

Keywords

Grass pea
Cluster analysis
Principal components analysis
Heritability
Plant Genetic Research
Volume 7, Issue 2
December 2020
Pages 145-162

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