Genetic Studies in Pea
Loading...
Date
1997
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Birsa Agricultural University, Ranchi
Abstract
The present investigation was undertaken with an objective to assess the yield potential of the genotypeswith respect to its variability of the genotypes and single cross hybrid combination and also screening of the genotypes against powdery mildew disease.
Analysis of variance for 36 genotypes for two years revealed highly significant differences for all the characters under study. Out of 36 geno types only 12 genotypes recorded higher pod yield per plant and were considered to be high yielder. Highest pod yield per plot was recorded in NDVP 9(1.48 Kg) closely followed by Selection 82 (1.45 Kg) and JP 585 (1.34 Kg). The pod yield per plant was maximum in genotype IP 3 (127.71 g) followed by PMR 20 (122.40 g) Ajad Pea (121 19g) and JP 829 (119.00 g).
High heritability estimates (in broad sense) alongwith genetic advance were observed for plant height, pod yield per plant, grain yield per plot and days to 50 per cent flowering and fruiting. Pod yield per plant had positive and significant correlation with pod thickness, green grain weight (10 pod) and pod breadth. Grain yield per plot had highly significant and positive correlation with pod yield per plant and grain yield per plant. Shelling percentage (dry pod) had positive and significant correlation with pod yield per plot, grain yield per plant and per plot Plant height had significantly negative correlation with days to flowering and fruiting Out of 36 genotypes, only 12 genotypes were found moderately susceptible and rest were rated as susceptible to highly susceptible in reaction against powdery mildew disease.
Genetic divergence analysis of 36 genotypes for 19 characters indicated that some were quite close to each other and others were quite diverse. All these genotypes were grouped into 13 cluster groups (Wilks's). As genetically diverse parents often produce maximum heterosis. offer a better chance of isolating transgressive segregants. Accordingly. 8 diver gent parents viz. Arka Ajeet. Bonneville. Ajad Pea VL 3. PMR 20. KS 136. JP 829 and VP 7802 were selected for diallel mating (without reciprocal).