GENETIC DIVERSITY IN PIGEONPEA [Cajanus Cajan L. Millsp.]
Journal Title: International Journal of Agriculture Sciences - Year 2017, Vol 9, Issue 18
Abstract
A set of 30 pigeonpea genotypes were evaluated during kharif season 2013-14 at Research farm, College of Agriculture, Gwalior, Madhya Pradesh, to assess the genetic diversity. The study revealed that there was wide range of genetic diversity among genotypes for all 11 yield and its attributing characters. D2 analysis grouped 30 genotypes into 5 clusters. Cluster III was largest consisting of 15 genotypes, followed by cluster I and IV both containing 6 genotypes, cluster V had 2 genotypes and the cluster II was solitary. The inter cluster D2 values indicated that most diverse clusters werecluster II and V (641.98) followed by Cluster I and V (636.22), cluster I and II (632.00) and cluster I and III (479.77).The highest intra-cluster distance was observed in cluster V (247.40) followed by cluster IV (223.67) and cluster III (140.23)which indicated maximum variability within the cluster. Cluster V showed highest mean for most of the characters viz. length of pod (7.23), number of seeds per pod (5.28), days to maturity (256.50), 100 seed weight (10.24), seed yield per plant (166.42) and seed yield per hectare (1325.72). while cluster I showed lowest mean for most of the characters viz. number of primary branches per plant (13.60), number of pods per plant (285.36), plant height (141.50), seed yield per plant (84.04) and seed yield per hectare (701.50).Cluster II showed high mean for number of pods per plant (470.20), while lowest mean for days to 50% flowering (91.50), days to maturity (185.98) and 100 seed weight (8.12). Cluster III showed high mean for days to 50% flowering (113.83) and number of primary branches per plant (18.36). Cluster IV showed high mean for pod bearing length of plant (138.35) and plant height (18.36). The contribution of characters towards genetic divergence was highest in seed yield per plant (16.65%) followed by seed yield per ha (16.53%), number of pods per plant (13.58) and number of primary branches per plant (11.99).The characters such as seed yield per plant, seed yield per ha, number of pod per plant and number of primary branches per plant had potential variability which can be used as parameters while selecting diverse parents in the hybridization programme for further improvement of yield and its contributing characters in pigeonpea.
Authors and Affiliations
NAVNEET SATANKAR, R. S. SIKARWAR, A. K. SINGH, ANIL KUMAR RAI
Keywords
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