Genetic Analysis and Seed Polymorphism in Inter sub Specific Cross of Blackgram (Vigna mungo (L.) Hepper)

Manju Devi S ,Null Author_Id ,Manoj Kumar ,P Jayamani

doi:10.29321/maj.10.000563

Abstract

The present study was carried out using 189 pre-breeding lines from the cross VBN (Bg) 5 and Vigna mungo var silvestris 22/10 to study the genetic variability for nine yields and six seed traits. Significant variability was observed for all the traits studied. The phenotypic coefficient of variation (PCV) was higher than the genotypic coefficient of variation (GCV) for all the 15 traits. High PCV was observed for number of pods per plant, seed volume, and single plant yield. The moderate to high GCV was exhibited for hundred seed weight, plant height, number of pods per plant, seed volume, and single plant yield. The heritability estimates were high for pod length, plant height, seed length, hundred seed weight, single plant yield, bulk density, seed length-width ratio and seed width. The traits viz., plant height, hundred seed weight, and single plant yield showed high heritability along with high genetic advance as per cent of mean respectively, which might be due to additive gene action. Hence, these traits could act as a better source for the breeding programme for evolving high-yielding bold seeded varieties.

Highlights

Blackgram (Vigna mungo (L.) Hepper), known as urdbean, is an essential short duration, self-pollinated, diploid (2n=22) legume that belongs to the family Leguminaceae with a genome size of 574 Mbp (Gupta et al, 2008)
Genetic variability for yield and yield contributing characters were lost in the process of crop evolution, which results in the narrowing of the genetic base
The wider range for mean values was observed for yield attributing traits viz., number of pods per cluster (2.17-4.50), number of pods per plant (6.00-19.17), number of seeds per pod (4.837.67), single plant yield (1.12-4.77 g), hundred seed weight (2.90-5.98 g), seed length (4.25- 5.20 mm), seed width (3.30-4.15 mm), seed length-width ratio (1.07-1.52), seed thickness (2.84-3.87 mm), seed volume (0.75-3.00 ml ) and bulk density (0.43-0.71 g/cm3)

Summary

Introduction

Blackgram (Vigna mungo (L.) Hepper), known as urdbean, is an essential short duration, self-pollinated, diploid (2n=22) legume that belongs to the family Leguminaceae with a genome size of 574 Mbp (Gupta et al, 2008). It contains a perfect combination of all major nutrients with a protein content of 25 per cent and can be used as a source of dietary protein next to soybean. Genetic variability for yield and yield contributing characters were lost in the process of crop evolution, which results in the narrowing of the genetic base.

Methods

Results

Conclusion