Vol. 11, Issue 9 (2022)

Author(s):
Pratiksha Bhagat, Shivendra Kumar Giri, Kirtan Kumar, JK Tiwari and SK Sinha

Abstract:
The present investigation was conducted during the kharif season 2021-22 at Research cum Instructional Farm IGKV RMD CARS, Ambikapur, Chhattisgarh. The genetic parameters studied namely, genotypic coefficient of variation and phenotypic coefficient of variation, heritability (h²) and genetic advance. Besides, these parameters, correlation coefficient were also studied for seed yield and its component traits in 16 genotype of pigeonpea. The results indicated that the genotypes showed significant variability for all the traits studied. The components of variance revealed that the phenotypic coefficient of variation (PCV) were higher than genotypic coefficient of variation (GCV) for all the characters studied indicating the role of environmental variance in the total variance. The highest GCV and PCV was recorded for seed yield followed by biological yield. Heritability in broad sense was higher in most of the characters viz., number of pods per plant followed by seed yield, number of primary branches per plant, number of seeds per pod, pod length, days to 50% flowering, number of pods per cluster, days to maturity and days to flower initiation. Seed yield, biological yield, number of pods per cluster, pod length and number of primary branches per plant all had highest genetic advance as a percentage of mean. It suggests that these characters are controlled by additive gene activity and that selection will aid in the growth of similar characters. Seed yield was significant positive association with number of pods per cluster followed by number of pods per plant, 100 seed weight, number of primary branches per plant, biological yield, pod length and number of seeds per pod and these are major yield contributing traits to be given selection pressure for improving yield.