Evaluation of genetic variability, correlation and path coefficients analysis for yield attributing traits in field pea [Pisum sativum (L.) var. arvense]

Abstract

An experiment was conducted in randomized complete block with 12 field pea genotypes to study the genotypic and phenotypic coefficients of variation, heritability, genetic advance, correlation among the yield contributing traits and their effect on number of seeds per pod of field pea. The phenotypic correlation coefficient (PCV) values were marginally bigger than genotypic correlation coefficient (GCV), revealing tiny sway of environment in character expression. High heritability coupled with high genetic advance and high GCV were observed for length of branch from main axis, number of seeds/plant and weight of 100 seeds indicating the multitude of additive gene action. Selection stranded on these characters will be worthwhile. Results of genotypic and phenotypic correlation coefficients showed significant positive correlation of stem circumference, number of seeds/ plant, number of pods/plant, weight of 100 seeds, number of seeds/pod with each other and other yield attributes. The component characters and path-coefficient analysis revealed positive direct effect of plant height at maturity and number of leaves/plant on the number of seeds/pod. The analysis suggests that the above mentioned parameters were sufficient for direct selection of genotypes for yield attributing characters. However, the high residual effect and relatively moderate level of genetic parameters revealed the requirement of more number of yield attributing parameters under consideration for improvising in crop breeding pipeline of field pea.

ASSESSMENT OF THE GENETIC VARIABILITY FOR VARIOUS AGRONOMIC TRAITS OF PEA (Pisum sativum L.) GENOTYPES

“…These results indicate that the presence of variability among the genotypes that used for effective selection or crop improvement. The results reported by Fikreselassie (2012) and Singh et al (2017) were also recorded similar observations in their study. The variation due to genotypes was highly significant for all majorities of the traits.…”

Comparative Analysis of Agronomic Traits, Seed Color Variability and Protein Content in Pisum sativum L. Cultivars Across Diverse European Environments

“…The research conducted by Barcchiya et al (2018) and Saxesena et al (2014) suggests that SPP is mainly influenced by environmental factors rather than genotype, although it does exhibit significant heritability in a broader sense, while PL is a heritable trait, meaning that genetic factors, more than agroecological conditions, have a major influence on this trait (Avci and Ceyhan, 2006), which can be seen from similar results on two localities. By comparing Comparative Analysis of Agronomic Traits, Seed Color Variability and Protein Content in Pisum sativum L. Cultivars Across... the average of the two-year results at both locations, very small differences were observed in the TSW , which confirms that this trait is highly heritable and genetically determined (Burstin et al, 2015;Georgieva et al, 2016;Singh et al, 2017). Similar can be said for seed protein content, which aligns with the previous research conducted by Crosta et al (2021).…”

Phenotypic and Genotypic Characterization and Correlation Analysis of Pea (Pisum sativum L.) Diversity Panel

“…Before initiating any effective selection program, it is necessary to know the association of various traits with each other [ 27 ]. The relationship between various traits of peas has been studied previously, but the results were found to vary significantly according to varietal differences and environmental conditions [ 28 , 29 , 30 , 31 ]. This study used a very diverse group of pea genotypes and many varieties have a low number of seeds per pod or small grains, therefore diluting the correlation.…”