Diallel analysis in chickpea

Abstract

This research was carried out at Dicle University, Faculty of Agriculture during the spring season in 2020. Four chickpea varieties (Cagatay, ILC 3279, Ak 71114 and Spanish chickpea) were used. Genetic parameters were estimated for plant and agricultural traits in 4 parents and their 6 F2 combinations obtained from their half-diallel crossbreeding in chickpea. Half diallel genetic parameters, ratios and graphs (Vr,Wr) were estimated using to methods of Hayman (1954a, 1954b, 1960) in the experiment. The study was carried out randomized complete blocks design with three replications. In the study, days to first flowering, plant height, internode length, the first flower node number, internode thickness was examined. Analysis of variance revealed that differences among genotypes were significant for days to first flowering days, plant height and first flower node number. However, internode length, 5th, 7th and 9th internodes thickness were nonsignificant. Dominant allele genes are more than the recessive allele genes in the days to first flowering, plant height and first flower node number. Epistatic gene effects were significant in the parents for days to first flowering. Cagatay and ILC 3279 had mostly dominant genes, but Ak 71114 had recessive genes. Additive genetic variance was significant for days to first flowering, plant height and internode length. Internode length for parents was mostly recessive genes, especially Spanish and Ak 71114. The dominant gene effect was significant for the first flower node number. In the narrow sense heritability degree was 42% for plant height and 45% for days to first flowering.