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International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2018, Volume : 6, Issue : 5
First page : (1198) Last page : (1203)
Article doi: : http://dx.doi.org/10.18782/2320-7098

Genetic Divergence Studies in Onion (Allium cepa L.) Genotypes for Growth and Yield Parameters

D. Rameez Basha*, L. Mukunda Lakshmi, Syed Sadarunnisa and K. T. Venkataramana

Department of Vegetable Science, College of Horticulture, Anantharajupet 516105
*Corresponding Author E-mail: basharameez@gmail.com
Received: 2.08.2018  |  Revised: 30.08.2018   |  Accepted: 7.09.2018  

 ABSTRACT

Mahalanobis D2 statistics was used to study the genetic divergence for 15 characters among 29 genotypes of Onion. Genotypes were grouped in to nine clusters on the basis of realative magnitude of D2 values. The highest number of genotypes (9) appeared in
cluster I. The maximum inter cluster distance was observed between cluster VIII and cluster IX followed by cluster IV and VII. The minimum inter cluster distance was observed between cluster IV and V. Maximum intra cluster distance was in cluster I followed by cluster VII.Clusters differed with respect to their mean performance. Cluster IV ranked first with respect to where desirable characters bulb weight, equatorial bulb diameter, polar bulb diameter, bulb shape index and number of rings. The same cluster also recorded lower mean value for doubles, thrips and purple blotch incidence which were desirable characters and have to be considered in future crop improvement programme.

Key words: Onion, Genotypes, Crop, Cultivation

Full Text : PDF; Journal doi : http://dx.doi.org/10.18782

Cite this article: Basha, D.R., Lakshmi, L.M., Sadarunnisa, S. and Venkataramana, K.T., Genetic Divergence Studies in Onion (Allium cepa L.) Genotypes for Growth and Yield Parameters, Int. J. Pure App. Biosci.6(5): 1198-1203 (2018). doi: http://dx.doi.org/10.18782/2320-7051.7098