Assessment of Genetic Variability, Diversity and Trait Correlation Analysis in Common Bean (Phaseolus vulgaris L.) Genotypes

Abstract

The present investigation was undertaken to study the genetic variability, diversity through cluster analysis and correlation among yield attributing traits. The experimental material is comprised of 63 diverse germplasm accessions including three check varieties were evaluated in augmented design during Rabi 2015-16 at IIPR, Kanpur. In this study, totally nine traits, namely, days to fifty per cent flowering (DF), days to maturity (DM), plant height (PH), number of branches per plant (NBP), number of pods per plant (NPP), pod length (PL), seeds per pod (SPP), 100 seeds wt (g) (HSW) and seed yield per plant (g) (SYP) were recorded. The results exhibited that the analysis of variance noticed significant differences among the genotypes for all characters studied. The genetic variability parameter showed that phenotypic coefficient of variation (PCV) were higher than those of genotypic coefficient of variation (GCV) for all the traits studied. Higher GCV coupled with heritability and genetic advance as % mean was recorded for PH, NPP, HSW and SYP. Likewise, high heritability coupled with high genetic advance as % mean was recorded in DF, PH, NPP, PL, HSW and SYP. Trait association study revealed that the seed yield per plant exhibited significant positive correlation with NBP, NPP, NSP and HSW. In the same pattern, Euclidian clustering analysis displays 63 genotypes were grouped to two major clusters. From this investigation, it was observed that all genotypes showed sufficient genetic variability for the traits studied. The genotype such as EC400414, EC400398, ET8415 and EC540173 were superior to check varieties in terms of morphological and other agronomic traits. These genotypes could be utilized in breeding programme for improvement of specific traits.

Variability, Similarity Network and Genotypic Path Analysis of Common Bean Yield Traits

“…The genetic parameters of traits that exhibited genetic variability in the material evaluated showed heritability above 80%, which indicates a greater association between phenotypic and genotypic values, while the highest estimates of GCV were observed in PH, POP, Y and SM, followed by SPO and BP, which indicates greater genetic variability and the possibility of genetic gain in these traits. Similar results were observed by Basavaraja et al (2021) who reported high GCV for PH, POP, Y and SM followed by BP and SPO, and high h 2 for PH, DM, DF, SM, Y, POP and SPO. Positive and significant genotypic correlations were observed between the PH trait with DA, DM, POP and SPO.…”

“…In this work, it was used to identify clusters of traits correlated with each other and with yield, allowing to discard those that are redundant and to increase the selection efficiency in the common bean breeding program. Similar studies carried out and published in Mozambique are scarce, however, several studies in the world, such as Ejara et al (2017), Oliveira et al (2018), AlBallat and Al-Araby (2019), Sharma et al (2019), Medianeira Giroletta dos Santos et al(2020, Yohannes et al (2020) and Basavaraja et al (2021) showed the importance identifying traits of interest that improve the yield of common bean. Studying the variability and relationships between traits is one of the most important steps in the initial genetic improvement program aimed at developing highyielding varieties.…”

Genetic Divergence for Seed Yield Enhancing and Quality Traits in Pigeonpea [Cajanus cajan (L.) Millsp.]

“…Our results were in agreement with the results of Muniswamy et al (2014), Chaudhary et al (2016) and Shruthi et al (2020). Several researchers' viz., Mohan et al (2021), Remzeena et al (2021 and Basavaraja et al (2021) in other legume crops also gave emphasis on need of high genetic diversity to create the high genetic variation and their results were in conformity with our findings.…”

French bean variety Ooty 3 : A high yielding variety suitable for Temperate zones of Tamil Nadu

“…Percentage increase over check Variety Ooty 1 is 14.59 for green pod yield by its superior performance across the environments over the check variety (Table 7). Such high yield in french beans was also obtained by Reddy et al (2021), Sheik et al (2020, Basavaraja et al (2019), Kargiotidou et al (2019) and Pratap et al (2021).…”