Path Analysis and Genetic Divergence in Dill (Anethum graveolens L.)
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Date
2013
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MPUAT, Udaipur
Abstract
The present investigation entitled “Path analysis and Genetic Divergence in dill
[Anethum graveolens. L.]” was carried out with 20 genotypes including 4 checks. The
genotypes were planted in Randomized Block Design with three replications during late
kharif 2012 at Instructional Farm, Department of Plant Breeding and Genetics, Rajasthan
College of Agriculture, Maharana Pratap University of Agriculture and Technology, Udaipur.
The observation were recorded on five randomly selected plants for eleven characters
viz., days to 50 per cent flowering, days to maturity, plant height, pedicel length, number of
primary branches per plant, number of secondary branches per plant, number of umbels per
plant, number of umbellets per umbel, seed yield per plant, harvest index and oil content. The
data so obtained were subjected to analysis of variance, estimation of different variability
parameters and path coefficient analysis and genetic divergence.
Analysis of variance revealed that mean square due to genotype were highly
significant differences among the genotypes for characters like days to 50 per cent flowering,
plant height, pedicel length, number of primary branches per plant, number of secondary
branches per plant, number of umbels per plant, number of umbelletes per umbel, harvest
index, seed yield per plant, and oil content suggesting sufficient amount of variability in the
experimental material under study. High GCV coupled with high heritability and expected
genetic advance of a character provides good selection advantage. There is a substantial
scope for improvement of oil content, harvest index, number of umbels per plant and pedicel
length. Selection for these characters would be effective in selection of suitable genotype for
dill improvement programme. Association study indicated that seed yield per plant was positively and significantly
correlated at both genotypic and phenotypic level with harvest index and positively and
significant correlated only at genotypic level with number of umbelletes per umbel. This
association indicated that improvement in seed yield can be achieved by improving the above
character. Path coefficient analysis revealed that harvest index, number of umbelletes per
umbel and plant height were the major components for seed yield per plant because these
traits had maximum direct and indirect effect towards seed yield.
On the basis of present study the genotype PD-4, PD-32, PD-36, PD-52, PD-53, PD-
89, PD-94, PD-109 and PD-129 were found to have considerably higher mean values for the
traits seed yield per plant and oil content and lower mean values for days to 50% flowering,
days to maturity. Hence, emphasis should be given to utilize these genotypes in further
breeding programme.
On the basis of divergence studies it was concluded that there was no relationship
between genetic and geographical origin. Maximum inter - cluster distance was between
cluster IV and cluster VI and genotypes of these clusters with high per se performance could
be utilized in breeding programmes. Genetically diverse and high yielding genotypes of dill
like PD-4, PD-63, PD-109 and PD-129 could be used for breeding programmes so as to
ameliorate the productivity and quality of dill.
Description
Path Analysis and Genetic Divergence in Dill (Anethum graveolens L.)
Keywords
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Citation
Solanki and Dodiya, 2013