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STABILITY ANALYSIS IN RICE GENOTYPES

KrishiKosh

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Title STABILITY ANALYSIS IN RICE GENOTYPES
 
Creator KUMAR RAJA, B.S
 
Contributor RAJU, P.R.K
 
Subject STABILITY, ANALYSIS, RICE, GENOTYPES
 
Description The present investigation on “Stability analysis in rice
genotypes” was carried out during 2003-04 at Agricultural
Research Station, Maruteru to study the v ariability, heritability,
genetic advance, character association and stability analysis,
among 25 genotypes of rice in four environments (E-I = sowing on
10t h July, 2003; E-II = sowing on 20t h July, 2003; E-III = sowing
on 10t h December, 2003 and E-IV = sowing on 20t h December,
2003).
The analysis of variance indicated significant differences
among the genotypes for all the characters. Estimates of
heritability and genetic advance revealed that, plant height at 65
DAS, plant height at harv est, test weight, biomass, L/B ratio
(grain), L/B ratio (kernel) and protein content recorded high
heritability coupled with high genetic advance. The trait milling
per cent exhibited moderate heritability with low genetic advance
and head rice recovery per cent exhibited high heritability with
low genetic advance.
Correlation studies revealed that grain yield had
significant positive association with biomass, days to 50 per cent
flowering and harvest index. It suggests that selection for any of
these characters will result in improvement of yield. The quality
characters protein content and grain elongation ratio exhibited
non-significant association with grain yield indicating independent
nature of these characters.
The pooled analysis of variance for stability showed
significant differences among the genotypes for all the
characters. The genotype-environment interaction showed a high
significance for all the characters except productive tillers/plant,
grain elongation ratio and protein content. However, high
significance of pooled deviation for all the characters except
harv est index and L/B ratio (kernel) indicates the importance of
non linear component in determining interaction of the genotypes
with environments in the present study.
The genotypes MTU-7029 and MTU-2716 were found to
be stable for grain yield. PR-106, NLR-145 and JGL-384 were
found to be stable with reference to biomass. The genotypes
BPT-1235, MTU-1010 and Kasturi were found to be suitable for
favourable environments because of their below average stability
for most of the characters. The variety JGL-384 was found to be
suitable for poor environments with above average stability for
characters viz., grain yield, harvest index and L/B ratio (kernel).
 
Date 2016-08-20T11:56:44Z
2016-08-20T11:56:44Z
2004
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/73140
 
Language en
 
Relation D7669;
 
Format application/pdf
 
Publisher ACHARYA N. G. RANGA AGRICULTURAL UNIVERSITY, RAJENDRANAGAR, HYDERABAD