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Genetic parameters of selection and stability and identification of divergent parents for hybridization in rice bean (Vigna umbellata Thunb. (Ohwi and Ohashi)) in India

Published online by Cambridge University Press:  22 April 2009

S. GUPTA ,
M. KOZAK ,
G. SAHAY ,
A. A. DURRAI ,
J. MITRA ,
M. R. VERMA ,
A. PATTANAYAK ,
P. D. THONGBAM  and
A. DAS
S. GUPTA
Affiliation:
Plant Breeding Division, ICAR Research Complex for NEH Region, Umroi Road, Umiam (Barapani), Meghalaya, 793 103, India
M. KOZAK*
Affiliation:
Department of Experimental Design and Bioinformatics, Faculty of Agriculture and Biology, Warsaw University of Life Sciences, Nowoursynowska 159, 02-776Warsaw, Poland
G. SAHAY
Affiliation:
Plant Breeding Division, ICAR Research Complex for NEH Region, Umroi Road, Umiam (Barapani), Meghalaya, 793 103, India
A. A. DURRAI
Affiliation:
Plant Breeding Division, ICAR Research Complex for NEH Region, Umroi Road, Umiam (Barapani), Meghalaya, 793 103, India
J. MITRA
Affiliation:
Plant Breeding Division, ICAR Research Complex for NEH Region, Umroi Road, Umiam (Barapani), Meghalaya, 793 103, India
M. R. VERMA
Affiliation:
Division of Agricultural Economics and Statistics, ICAR Research Complex for NEH Region, Umroi Road, Umiam (Barapani), Meghalaya, 793 103, India
A. PATTANAYAK
Affiliation:
Plant Breeding Division, ICAR Research Complex for NEH Region, Umroi Road, Umiam (Barapani), Meghalaya, 793 103, India
P. D. THONGBAM
Affiliation:
Plant Breeding Division, ICAR Research Complex for NEH Region, Umroi Road, Umiam (Barapani), Meghalaya, 793 103, India
A. DAS
Affiliation:
Plant Breeding Division, ICAR Research Complex for NEH Region, Umroi Road, Umiam (Barapani), Meghalaya, 793 103, India
*
*To whom all correspondence should be addressed. Email: nyggus@gmail.com
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Summary

Fifty-two genotypes of rice bean (Vigna umbellata Thunb. (Ohwi and Ohashi)), an under-cultivated crop, were evaluated in the rainy (kharif) seasons of 2001, 2002 and 2003 in the North Eastern Hill Region, India to select suitable genotypes for cultivation in the North Eastern Hill region and to identify promising parents for hybridization programmes. The germplasm studied comprised 44 Indian and eight foreign genotypes. A wide range of variability was observed for eight characters studied (plant height, number of branches/plant, stem thickness, pod length, number of seeds/pod, 100-seed weight, pod weight/plant and seed yield/plant). Number of days to mid-flowering and number of days to maturity showed little variation. High heritability (0·58) and high genetic advance (0·53) were observed for 100-seed weight, high heritability (0·93) and moderate genetic advance (0·37) for seed yield/plant, and high heritability (0·60) and low genetic advance (0·13) for number of days to mid-flowering. Since the main aim in rice bean breeding is to develop high yielding, early maturing genotypes with low plants, selection was based mainly on the mean performance of these three traits over the 3 years, as well as their stability. One of the genotypes, RBL 1, was very high yielding, although the yield was not stable across years. Another genotype, RBS 24, was very early maturing and had very short plants compared with the other genotypes studied. These two, along with several other genotypes selected, may be promising for a hybridization programme aiming to develop dwarf, early maturing genotypes with high yield. The best yielding genotypes, namely RBL 1, RCRB1-3 and IC 187911, may be recommended for cultivation in the shifting cultivation areas (Jhum) regions of North Eastern India.

Type
Crops and Soils
Information
The Journal of Agricultural Science , Volume 147 , Issue 5 , October 2009 , pp. 581 - 588
Copyright
Copyright © Cambridge University Press 2009

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