Vol. 12, Issue 3 (2023)

Author(s):
Sathish N, Vilas D Gasti, Vijayakumar Rathod, Chandrakant Kamble, Dileepkumar A Masuthi, Vijaymahantesh and Sandhyarani Nishani

Abstract:
The current investigation was carried out on "Morphological and molecular characterization of yardlong bean (Vigna unguiculata ssp. sesquipedalis (L.) Verdc.) genotypes screened under polyhouse conditions". The analysis of variance showed that there were very significant (p = 0.01 and p = 0.05) genotypic variations for growth, yield and biochemical parameters in yardlong bean. The range, mean, phenotypic variance, genotypic variance, genotypic coefficient of variation, phenotypic coefficient of variation, broad-sense heritability, genetic advance and genetic advance over percent of mean were calculated. The genotypes showed considerable amount of variability for all the traits. The high estimates of heritability coupled with high genetic advance over percent of mean were noticed for the traits viz., plant height at final harvest, number of primary branches at final harvest, number of flowers per cluster, number of clusters per plant, pod length, pod weight, number of pods per cluster, number of pods per plant, yield (kg/ plant), yield per hectare, crude protein, ascorbic acid and TSS which shows that additive gene action has a significant influence on the traits and selection will be effective in improving these traits. By applying Tocher's approach, 40 genotypes were divided into 9 clusters, the maximum divergence was observed between clusters III and IX for traits like yield, pod length, number of pods per plant, number of primary branches at final harvest and pod weight contributed maximum towards total divergence, the genetically diverse genotype of these clusters aids in the creation of larger recombinants, and would be an aid in the genetic improvement of yardlong bean genotypes.