Oyi Perme, H.P. Chaturvedi* and M.B. Sharma
Department of Genetics and Plant Breeding, School of Agricultural Sciences & Rural Development, Nagaland University, Medziphema-797106 Nagaland
Email: hpchaturvedi68@gmail.com
Received-01.09.2022, Revised-11.09.2022, Accepted-28.09.2022
Abstract: The present investigation entitled ‘Genetic variability for seed and seedling vigour traits in Pigeon pea [Cajanus cajan (L.) Millsp.] Genotypes’ was conducted with twenty genotypes including two check varieties. The experiment was conducted during the month of May 2021, at the laboratory of Department of Genetics and Plant Breeding, NU: SASRD, Medziphema Campus, Nagaland. The main goal of the study was to assess the genetic information of twenty genotypes of Pigeon pea for seed and seedling vigour traits. The experiment was laid out in Completely Randomized Design (CRD) with three replications. Data were recorded on eleven characters. For all of the traits studied, the phenotypic coefficient of variation (PCV) was found to be larger than the genotypic coefficient of variation (GCV), indicating that their expression is influenced by environment to some extent. High heritability coupled with high genetic advance as percent of mean were observed for seedling vigour index II. The majority of the seedling traits had a positive and significant correlation with seedling vigour index I & II, implying the importance seedling traits in predicting seedling vigour. Germination percentage, root length at the 20th DAS, fresh shoot weight at the 20th DAS, fresh root weight at the 20th DAS, dry shoot weight at the 20th DAS, dry root weight at the 20th DAS, and seed vigour index I were all factors that contributed to seedling vigour and hence good plant stand. The study suggests that while screening of germplasm for seed and seedling characteristics germination percentage, shoot length at 20th DAS, root length at 20th DAS, dry shoot weight at 20th DAS, dry root weight at 20th DAS, seedling vigour index I and seedling vigour index II should be taken into consideration. The outcomes of this study led to the conclusion that the genotypes ICPH-2433, ICPL-88039, ICPL-11301, and PA-636 were found to be promising in terms of performance for seedling vigour traits.
Keywords: Correlation, Genetic variability, Genotypes, Pigeon pea, Traits
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