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Genetic Diversity in Indian Mustard [Brassica juncea (L.) Czernj & Cosson] as Revealed by Agronomic Traits and RAPD Markers

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Title Genetic Diversity in Indian Mustard [Brassica juncea (L.) Czernj & Cosson] as Revealed by Agronomic Traits and RAPD Markers
Not Available
 
Creator K. H. Singh, R. Shakya , A. K. Thakur, D. K. Chauhan and J. S. Chauhan
 
Subject genetic diversity, RAPD markers, Indian mustard
 
Description Not Available
In present study, an attempt has been made to
assess the genetic diversity among 50 genotypes of Indian
mustard using agronomic traits and random amplified
polymorphic DNA (RAPD) markers. Variability was
observed for agronomic traits viz plant height (cm), main
shoot length (cm), days to flower initiation, number of
siliquae on main raceme, number of seeds per siliqua, seed
yield per plot (g), biological yield per plot (g), harvest
index (%), days to maturity and 1,000-seed weight (g).
Cluster analysis based on agronomic traits revealed a high
degree of diversity among the accessions. Maximum var-
iability was recorded for biological yield followed by seed
yield, while minimum variability was observed for days to
maturity followed by days to flower initiation. RAPD
marker OPB8 was found to be the most informative primer
followed by OPB14, OPB11 and OPB2. Both agronomic
traits and molecular markers were effective in discrimi-
nating genotypes into different clusters, however, cluster-
ing pattern varied for both agronomic traits and molecular
markers. Different clustering pattern based on agronomic
data and RAPD markers indicated lack of association
between genetic and phenotypic diversity implying that
polymorphism due to RAPD is not linked to phenotypic
variation. There was no relationship between place of
origin and clustering of genotypes, however, diverse
genotypes could be identified on the basis of both and are
likely to produce more variability in segregating genera-
tions as well as to serve as parents for high heterosis.
Not Available
 
Date 2018-11-19T09:41:35Z
2018-11-19T09:41:35Z
2013-01-01
 
Type Research Paper
 
Identifier Not Available
0250-541X
http://krishi.icar.gov.in/jspui/handle/123456789/12070
 
Language English
 
Relation Not Available;
 
Publisher National Academy of Sciences, India