Indian Society of Genetics & Plant Breeding
Stability parameters in respect of fertility representing reproductive stage cold tolerance
were studied using 21 parents and their 90 Fl hybrids at three cold stressed locations.
Pooled analysis of variance revealed high genotype-environment interaction for fertility
with importance of both the linear as well as nonlinear components. Twenty seven
genotypes had significantly greater fertility than the population mean. Three indica and 5
japonica females, and six indica X indica hybrids constituted the top ranking group. Forty
nine genotypeshad bi<1 and 45 bi>l. S-2d was greater than 0 for 66 genotypes. Indica parent
K39-96, japonica parent Suweon 235, and 5 indica x indica hybrids (Suweon 287 x IR-15889,
K39-96 x IR-7167, Shoa-Nan-Tsan X IR-7167, Suweon 287 X IR-9202 and Shoa- Nan-Tsan X
IR-9202) had high fertility, were most stable, and could be considered as ideal genotypes
for cultivation under cold environments.
Keywords: Rice, reproductive stage cold tolerance, stability.
Year: 1991
Volume: 51
Issue: 1
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906
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