International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2017, Volume : 5, Issue : 2
First page : (72) Last page : (76)
Article doi: http://dx.doi.org/10.18782/2320-7051.2820
Genetic Divergence in Genotypes of Cluster Bean [Cyamopsis tetragonoloba (L.) Taub.] Under Lucknow Province
Vikas Kumar1*, R. B. Ram1, Sandeep Kumar Rajvanshi1 and Omvir Singh2
1Department of Applied Plant Science (Horticulture), Babasaheb Bhimrao Ambedkar University, Lucknow, Uttar Pradesh - 226025, India
2National Bureau of Plant Genetic Resources, Regional Research Station, Jodhpur- 342003, India
*Corresponding Author E-mail: vs1744@gmail.com
Received: 9.04.2017 | Revised: 20.04.2017 | Accepted: 21.04.2017
ABSTRACT
A study was conducted on cluster bean to find out the genetic divergence in genotypes of cluster bean under Lucknow condition in thirty genotypes of cluster bean collected from different sources and maintained at the Horticulture Research Farm-I, of the Department of Applied Plant Science (Horticulture), Babasaheb Bhimrao Ambedkar University, Lucknow, Uttar Pradesh, India. The genetic divergence studies using Mahalanobis D2 statistics grouped thirty genotypes of cluster bean divided into 5 different clusters. The maximum intra cluster distance was observed in cluster I indicated that genotypes under this group are diverse. The formation of solitary clusters may be due to total isolation preventing the gene flow or intensive human selection for diverse adaptive complexes. The intra cluster distance varies from 3.400 in clusters I and to the maximum distance in cluster II (8.235). This reveals that presence of divergence in cluster I. The inter cluster D2 values also ranged from 3.464 between cluster IV and cluster III, 4.218 between cluster III and V and of maximum distance of 6.625 between cluster I and cluster IV. The percent contribution towards genetic diversity was highest from days to maturity (37.87%) followed by pod yield (q/ha) (22.32%) and seed yield /plant (g). On the basis of inter-cluster distances and percent performance observed in the present study, a hybridization programme involving genotypes for a specific character may be selected using cluster mean values.
Key words: Genetic divergence, mahalanobis D2, Cyamopsis tetragonoloba, intra cluster, cluster distance
Full Text : PDF; Journal doi : http://dx.doi.org/10.18782
Cite this article: Kumar, V., Ram, R.B., Rajvanshi, S.K. and Singh, O., Genetic Divergence in Genotypes of Cluster Bean [Cyamopsis tetragonoloba (L.) Taub.] Under Lucknow Province, Int. J. Pure App. Biosci.5(2): 72-76 (2017). doi: http://dx.doi.org/10.18782/2320-7051.2820
