Record Details

Studies on genetic variability in the Indian mustard (Brassica juncea L. Czern and Coss) germplasm and its suitability to northern Karnataka

KrishiKosh

View Archive Info
 
 
Field Value
 
Title Studies on genetic variability in the Indian mustard (Brassica juncea L. Czern and Coss) germplasm and its suitability to northern Karnataka
 
Creator Doddabhimappa.Gangapur
 
Contributor B.G.Prakash
 
Subject Genetics and Plant Breeding
 
Description Forty-six germplasm lines were evaluated for seed yield and its components,
separately under protected (chemical control against pest and disease) and unprotected
conditions followed RBD design with two replication each powdery mildew reaction, aphid
resistance during rabi season of 2007-08 at RARS, Bijapur.
Seed yield per metre and seed yield/plant showed highest phenotypic and genotypic
coefficient of variation under both protected and unprotected condition followed by
biological yield/plant.
Heritability in broadsense and GAM were higher for seed yield per metre followed by
number of siliquae/plant, number of seeds per siliqua in both conditions suggesting less
influence of environment in these characters.
The correlation studies revealed that seed yield per metre had significant positive
association with number of primary branches per plant, number of secondary branches per
plant, number of siliquae per plant, number of seeds per silique, 1000-seed weight in both
protected and unprotected conditions at phenotypic and genotypic level. Path coefficient
analysis revealed maximum positive direct effect of number of siliquae/plant on seed yield
per metre and its indirect effects were through other characters viz., biological yield/plant and
harvest index.
All the germplasm lines were grouped into seven cluster based on D² analysis in both
the conditions. Clusters I and VII possessing high mean values for most of the desirable
traits including yield are desired to be crossed with cluster II and V which possessed high
mean values of oil content (%) and harvest index for exploitation of heterosis. Among the
eight top performing germplasm lines viz., GPM31, 64, 23 were common in both the
conditions. The mustard lines viz., Pusa Agaram, Pusa, Mahak, GPM46, EJ-15, JM-1,
GPM108 and GPM25, GPM106, GPM65, GPM83, GPM58, GPM53 exhibited resistant to
aphid and powdery mildew respectively.
 
Date 2016-10-27T15:21:53Z
2016-10-27T15:21:53Z
2008
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/82571
 
Format application/pdf
 
Publisher UAS, Dharwad