Morphological Evaluation and Multivariate Analysis of Soybean Glycine max (L.) Merrill Genotypes in Western Mid-Hills of Nepal
Anjali Khadka1*, Subodh Raj Pandey2, Subarna Sharma Acharya3, Amrit Poudel4 and Sushma Adhikari1
ABSTRACT
With the aim to study morphological variances along with association and contribution of traits on yield, the varietal trial was performed at Regional Agricultural Research Station (RARS), Lumle, Kaski, Nepal. Sixteen soybean genotypes were placed out in a randomized complete block design with three replications. According to mean performance, the genotypes F778817, G-1873 and KAVRE performed better and were found high yielding. Phenotypic coefficient of variation was found to be higher than the genotypic coefficient of variation for all traits. Most of the traits observed were moderate to highly heritable accompanied by the desirable level of genotypic and phenotypic coefficient of variations and genetic gain, indicating that the heritability was most likely due to additive gene effects and selection may be effective. High heritability for days to maturity, moderate heritability for days to 50% flowering with low genetic advance and genotypic and phenotypic coefficient of variation for both of the above traits were observed. Test weight had a significant positive correlation with grain yield. Number of nodes, basal pod height, internodal length, plant height, number of branches, number of grains, pod length at maturity, leaf area was positively correlated with grain yield while days to 50% flowering, days to maturity, number of trifoliate, number of pods and fresh weight of the pod were negatively correlated with grain yield. The path analysis depicts that the internodal length and days to maturity had the highest direct positive and negative effect on yield respectively. Though test weight had a significant positive correlation with grain yield, it had a negative direct effect on grain yield. The cluster analysis grouped sixteen genotypes into four clusters among which cluster I was largest with eight genotypes.
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