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Genetic associations, variability and diversity in seed characters, growth, reproductive phenology and yield in Jatropha curcas (L.) accessions.

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Title Genetic associations, variability and diversity in seed characters, growth, reproductive phenology and yield in Jatropha curcas (L.) accessions.
Genetic associations, variability and diversity in seed characters, growth, reproductive phenology and yield in Jatropha curcas (L.) accessions.
 
Creator ICAR_CRIDA
 
Subject Biodiesel Diversity Germplasm Phylogeography
 
Description Not Available
A thorough and extensive wild germplasm
exploration survey was undertaken and 32 high yielding
candidate plus trees (CPTs) of Jatropha curcas from different
locations from a latitudinal and longitudinal spread
between 12 410 and 22 0E longitude and 77 and 84 400N
latitude covering 11 locations in an area spread of
150,000 km2 was collected for evaluating genetic association,
and variability in seed and growth characters.
Significant trait differences were observed in all the seed
characters viz., seed morphology and oil content as were
observed in growth characters viz., plant height, and female
to male flower ratio and seed yield in the progeny trial.
Broad sense heritability was high in general and exceeded
80% for all the seed traits studied. Female to male flower
ratio showed near to 100% heritability followed by yield
(83.61) and plant height (87.73). The path analysis revealed
that female to male flower ratio had highest positive direct
relationship with seed yield (0.789), followed by number of
branches (0.612) and number of days from fruiting to
maturity (0.431). Negative indirect effects were seen in
number of days from flowering to fruiting which indirectly
and negatively influenced yield through plant height and
number of branches. Hierarchical clustering by Ward’s
minimum variance cluster analysis showed phylogeographic
patterns of genetic diversity. K-means clustering
revealed that trees from different geographic regions were
grouped together in a cluster and as were trees from the
same geographical area placed in different clusters suggesting
that geographical diversity did not go hand in hand
with genetic diversity. In addition clustering identified
promising accession with favourable traits for future
establishment of elite seedling seed orchard and clonal seed
orchard for varietal and hybridization programmes.
Not Available
 
Date 2020-02-25T08:53:43Z
2020-02-25T08:53:43Z
2009-01-01
 
Type Technical Report
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/32851
 
Language English
 
Relation Not Available;
 
Publisher Shankar, A. K.,