Record Details

GENOTYPE X ENVIRONMENT INTERACTION FOR VARIETAL RESPONSE TO AGED SEEDLINGS IN RICE (Oryza sativa L.)

KrishiKosh

View Archive Info
 
 
Field Value
 
Title GENOTYPE X ENVIRONMENT INTERACTION FOR VARIETAL RESPONSE TO AGED SEEDLINGS IN RICE (Oryza sativa L.)
 
Creator ESWARI, K.B
 
Contributor NARENDRA KULKARNI
 
Subject GENOTYPE, ENVIRONMENT, INTERACTION, VARIETAL, RESPONSE, AGED, SEEDLINGS, RICE
 
Description The present study entitled "Genotype x
environment interaction for varietal response to aged
seedlings ;in rice (Oryza sativa L.)" was conducted
during kharif 1989 at the Agricultural College Farm,
Rajendranagar with fifteen rice cultivars. The
experiment was laid- out in Randomized Block Design
with three replications using four environments i.e.,
planting of 30, 40, 50 and 60 days old seedlings.
Genetic parameters viz., coefficient of variation,
heritability in broad sense genetic advance, genetic
advance as per cent of mean, genotype x environment
interaction and stability parameters for eight
characters were estimated.
Study of per se performance of cultivars
indicated an increase of 7, 16 and 25 days in flowering
and reduction of 4, 1.6 and 8.3 per cent in plant
height when transplanted at 40, 50 and 60 days. The
panicle length was .not influenced by age of seedlings.
There was no reduction of panicles 60 days may
be due to bunch planting. The cultivarse saleem, Pothana,
WGL-48684, RNR-99377, and Sambamahsuri were found to be
suitable for transplanting upto 50 days only. Mahsuri
recorded reduced yields at 30 days planting and was
more suitable for late planting. 1000 grain weight and
r
f
number of filled grains was drastically reduced with
aged seedlings and 68.4 per cent increase in sterility
was recorded at 60 days planting, compared to 30 days.
The charactres, flowering, plant height,
number of panicles m , yrain yield, 1000 grain weight,
number of filled grains and sterility had higher GCV
and PCV values indicating the presence of wide
variability and high degree of environmental influence.
Heritability in broad-sense and genetic
advance was hiyh over four environments for flowering,
plant heiyht, 1000 grain weight, number of filled
yrains and sterility indicating that these characters
are under the influence of add;tive gene action and
hence could be relied upon by resorting to straiyht
selection for improving these characters.
Pooled analysis of variance indicated enough
variation among varieties and considerable influence of
environments. GXe interaction was significant for all
the characters except for number of panicles m and
panicle length.
Three early cultivars viz.,Tellahamsa, IR-64,
Pothana and three medium duration cultivars viz.,
Surekha, WGL-48684, RNR-99377, and late variety
Sambamahsuri recorded unit regression and least s2di
estimates for grain yield and were stable w1th
different seedliny ayes. Stability for grain yield in
Tellahamsa was due to stability for flowering, panicle
length and low sterility. In case of WGL-48684 it was
4ue to floweriny, panicle length and 1000 grain weight.
For RNR-99377 it was . due to panicle length and
sterility. Sambamahsuri was stable for panicle length
and filled yrains per panicle.
 
Date 2016-08-20T15:34:34Z
2016-08-20T15:34:34Z
1990
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/73214
 
Language en
 
Relation D3474;
 
Format application/pdf
 
Publisher ACHARYA N.G. RANGA AGRICULTURAL UNIVERSITY, RAJENDRANAGAR, HYDERABAD.