Please wait a minute...
Journal of Arid Land  2012, Vol. 4 Issue (1): 71-76    DOI: 10.3724/SP.J.1227.2012.00071
Research Articles     
Variability and divergence in horsegram (Dolichos uniflorus)
Kanaka K DURGA
Seed Research & Technology Centre, Rajendranagar, Hyderabad, AP, India
Download:   PDF(442KB)
Export: BibTeX | EndNote (RIS)      

Abstract   Horsegram is an important and unexploited tropic and sub-tropic legume crop grown mostly in dry land agriculture. The study involving 23 cultivars of horsegram (Dolichos uniflorus) was conducted at the Seed Research & Technology Centre in Rajendranagar, Hyderabad, India during the early spring seasons of 2008 and 2009 to assess the nature and magnitude of variability in the existing species and also to identify diverse parents for use in further breeding programmes. The results indicated significant differences among the 23 cultivars for all characters studied, indicating the presence of sufficient genetic variation. High variability and heritability coupled with high genetic advance were reported for seed yield per plant and pod hulm per plant, indicating additive gene action and a possible scope for the improvement of these characters. Mahalanobis D2 statistics grouped all the 23 cultivars of horsegram into six clusters. The maximum inter cluster distance (62.39) was noticed between cluster IV (HG 50) and cluster V (HG 11). The maximum intra cluster distance ranged from 0 (clusters III, IV, V and VI) to 15.17 (cluster ?), indicating that the genotypes in these clusters were relatively more diverse than the genotypes within other clusters. Seed yield per plant contributed the maximum (33.20%) to the genetic divergence.

Key wordsgeitonogamy      inbreeding depression      inland sand dunes      self-fertilization      pollen brush      tripping mechanism     
Received: 15 June 2011      Published: 05 March 2012


Corresponding Authors: Kanaka K DURGA     E-mail:
Cite this article:

Kanaka K DURGA. Variability and divergence in horsegram (Dolichos uniflorus). Journal of Arid Land, 2012, 4(1): 71-76.

URL:     OR

Abdul-Baki A A, Anderson J D. 1973. Vigour determination in soybean seed by multiple criteria. Crop Science, 13: 630–633.

Burton G W. 1952. Quantitative inheritance in grasses. Proceedings of the 6th International Grassland Congress, Pennsylvania, 1: 277–283.

Dobhal V K, Rana J C. 1994. Genetic analysis for yield and its components in horsegram (Macrotyloma uniflorum). Legume Re-search, 17: 179–182.

International Seed Testing Association (ISTA). 1985. International rules for seed testing. Seed Science and Technology, 27(Suppl.): 30–35.

Johnson H W, Robinson H F, Comstock R E. 1955. Estimates of genetic and environment variability in soyabean. Agronomy Journal, 47: 314–318.

Katiyar P K, Dixit G P, Singh B B, et al. 2009. Non-hierarchical Euclidean cluster analysis for genetic divergence in mungbean cultivars. Journal of Food Legumes, 22(1): 34–36.

Lush J L. 1940. Intra-sire correlation and regression of offspring on dams as a method of estimating heritability of characters. Proceedings of American Society of Animal Production, 33: 293–301.

Mahalanobis P C. 1936. On the generalized distance in statistics. Proceedings of National Academy of Science India, 2: 9–55.

Maloo S R. 1999. Components of productivity and plant type concept in Cicer and Vigna species—a review. Legume Research, 22: 1–9.

Mittal V P, Brar K S. 2008. Divergence analysis in wheat. Crop Improvement, 35(1): 1–3.

Murthy B R, Arunachalam V. 1966. The nature of genetic divergence in relation to breeding system in some plants. Indian Journal of Genetics, 26: 188–198.

Rao C R. 1952. Advanced Statistical Methods in Biometric Research. New York: John Wiley & Sons.

Samal K M. 1996. Induction of disease resistance and grain shape mutants in upland rice varieties. Indian Journal of Genetics, 56:  468–472.

Samal K M, Senapati N. 1997. Genetic variability performance, correlation and coheritability of horsegram (Macrotyloma uniflorum Lam Verd.) mutant lines. Legume Research, 20(3–4): 207–211.

Singh D N. 1994. Genetic variability and character association in French bean (Phaseolus vulgare). Indian Journal of Agricultural Sciences, 64: 114–116.

Ushakumari R, Backiyani S, Dhanakodi C V. 2000. Character contribution to diversity in cowpea. Legume Research, 23(2): 122–125.

Venkateswarlu G. 2000. Genetic variability in horsegram (Macrotyloma uniflorum Lam). Agriculture Science Digest, 20(1): 64–65.

[1] DaoYuan ZHANG, Xiang SHI, JianCheng WANG, HuiLiang LIU John F GASKIN. Breeding system and its consequence on fruit set of a rare sand dune shrub Eremosparton songoricum (Fabaceae: Papilionoideae): implications for conservation[J]. Journal of Arid Land, 2011, 3(4): 231-239.