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Assessment of genetic diversity in local chilli collections (Capsicum annuum L.)

KrishiKosh

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Title Assessment of genetic diversity in local chilli collections (Capsicum annuum L.)
 
Creator Dandunayaka
 
Contributor V.Rudra.Naik
 
Subject Genetics and Plant Breeding
 
Description A field experiment on chilli germplasm was carried out during kharif 2006-07 at
Agricultural Research Station, Annigeri. The principle objective of the work was to assess the
genetic variability and diversity in the available 60 germplasm collected from different
northern parts of Karnataka. These germplasm was evaluated for 12 quantitative characters
and 6 quality characters. Considerable variability for most of the characters was indicated by
analysis of variance. High phenotypic and genotypic co-efficient of variation was observed
in yield related traits, fruit per plant and fruit weight. These characters are of economic
importance and there is scope for improvement through selection. High heritability coupled
with high genetic advance as per cent mean was noticed for biochemical parameters, fruit per
plant, dry fruit weight, fruit length, fruit diameter, secondary branches suggesting that
involvement of genetic factors. Strong correlation of yield with number of fruit per plant,
fruit weight, primary branches per plant, secondary branches per plant, pericarp weight was
observed. Biochemical characters were positively associated with fruit characters viz. fruit
length, fruit diameter and stem thickness. The path analysis indicated that number of fruit per
plant, fruit weight and secondary branches per plant had positive direct effect on yield.
Genetic diversity in the available germplasm was assessed by using D2 statistic. Sixty
genotypes were grouped into 11 clusters which had high range of inter cluster D2 value. Five
characters viz. secondary branches per plant, fruit colour, chlorophyll content, fruit diameter
and days to 50 per cent flowering were the chief characters contributed towards diversity.
Hybridization of cluster number III with cluster number IV is suggested as it was
most divergent from other clusters. Genotypes like ACA-8, ACA-28, ACA-33 and ACA-40
are desirable for fruit yield. Whereas ACA- 33, ACA-8, ACA-25 and ACA-26 are the
desirable genotypes for export purpose.
 
Date 2016-10-27T15:05:20Z
2016-10-27T15:05:20Z
2008
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/82553
 
Format application/pdf
 
Publisher UAS, Dharwad