Table of Contents
ISRN Genetics
Volume 2013, Article ID 651019, 6 pages
Research Article

Genetic Divergence in Indigenous Wild and Cultivated Rice Species of Manipur Valley

1Medicinal Plant and Horticulture Division, Institute of Bioresources and Sustainable Development, Takyelpat, Imphal 795001, India
2Department of Environmental Biotechnology, Bharathidasan University, Tiruchirappalli 620024, India
3Director of Research, Central Agricultural University, Iroisemba, Imphal 795004, India

Received 25 August 2012; Accepted 19 September 2012

Academic Editors: J. Huang and D. Sun

Copyright © 2013 K. Medhabati et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Genetic divergence of 32 indigenous rice germplasms and five wild rice of which three from Manipur and two wild rice procured from IRRI, Philippines was investigated using Mahalanobis, statistic. Based on twelve agromorphological characters, the thirty-seven germplasms both wild and cultivated were grouped into five clusters based on the relative magnitudes of values following Tocher's method of cluster formation. Based on the rank totals, the characters which contributed maximum towards genetic divergence in the present studies were grain yield/plant, spikelet/panicle, 100 grain weight, grain length, days to 50% flowering, ear bearing tillers/plant, and flag leaf length. In the present study, maximum intercluster distance was estimated between cluster III and ( ) which was closed followed by clusters II and V ( ). On the basis of their greater intercluster distance, high value of cluster mean according to the character to be improved and performance of the individual germplasms for the character, the germplasms could be used in hybridization programme for improvement of different plant characters in the rice germplasms of Manipur.