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Independent segregation of qualitative traits and estimation of genetic parameters and gene action for some quantitative traits in guar (Cyamopsis tetragonoloba L. Taub.)

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Title Independent segregation of qualitative traits and estimation of genetic parameters and gene action for some quantitative traits in guar (Cyamopsis tetragonoloba L. Taub.)
Not Available
 
Creator Hans Raj Mahla
Ramavtar Sharma
Sushil Kumar
Kishor Gaikwad
 
Subject Guar
chi-square
heritability
kurtosis
mapping population
skewness
 
Description Not Available
Current study was undertaken to elucidate the inheritance
qualitative traits namely, flower colour and leaf hairiness in
two F2
populations comprising of 194 and 99 individuals
with reference to yield and agronomic traits along with
genetic parameters. The violet colour of flowers and leaf
hairiness were dominant over white flower and smooth
leaves, respectively. The χ
2
-test revealed independent
single gene inheritance for both the traits with joint
segregation ratio of 9:3:3:1 in F2
. Except for no. of pods per
cluster and pods per plant, both parents (Smooth 25 and
HG2-20) exhibited significant (p < 0.05) differences for traits
under investigation. A higher estimate of phenotypic
coefficient of variance (PCV) than genonotypic coefficient
of variance (GCV) was recorded for all the characters except
test weight and clusters on branches. The heritability ranged
from 24.36% (seeds per pod) to 92.32% (clusters on
branches). Gene action as per skewness indicated that both
duplicate and complementary interactions were playing role
in the development of various traits, whereas, inheritance
analysis as per kurtosis suggested that traits were
oligogenic. Eventually, it can be concluded that high GCV,
appearance of transgressive segregants and involvement
of fewer major genes in defining the quantitative traits
including yield, provided an opportunity for their genetic
improvement.
Not Available
 
Date 2022-03-23T10:27:19Z
2022-03-23T10:27:19Z
2020-07-01
 
Type Research Paper
 
Identifier Not Available
0019-5200
http://krishi.icar.gov.in/jspui/handle/123456789/70538
 
Language English
 
Relation Not Available;
 
Publisher Indian Society of Genetics & Plant Breeding