GENETIC VARIABILITY AND DIVERGENCE ANALYSIS IN BASTAR ORIGINATED BOTTLE GOURD [Lagenaria siceraria (MOL.) Standl.]
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Date
2015
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Indira Gandhi Krishi Vishwavidyalaya Raipur
Abstract
The present investigation was conducted during the year 2014-15 under
All India Coordinated Research Project on Vegetable Crops, Research cum
Instructional Farm, Indira Gandhi Krishi Vishwavidyalaya, Raipur
(C.G.).The experiment was comprised of thirty one genotypes of bottle gourd and
laid out in Randomized Block Design (RBD) with three replications. Data were
analysed to work out the variability, correlation coefficient, path analysis and
genetic divergence for the characters viz., days to 50% flowering, number of
branches per plant, node number of first female flower appears, node number of
first female flower appears, days to fruit set, days to first fruit harvest, number of
fruits per plant, fruit length (cm), fruit girth (cm), average fruit weight (g), total
a) Title of the Thesis : Genetic variability and divergence analysis in
bastar originatted bottle gourd [lagenaria
siceraria (mol.) standl.]
b) Full Name of the Student : Vaibhav Kant Visen
c) Major Subject : Horticulture
d) Name and Address of the
Major Advisor
: Dr. Dhananjay Sharma(scientist), Deptt. of
vegetable Science COA (IGKV) Raipur (C.G.)
492012 COA, IGKV, Raipur, C.G.
e) Degree to be awarded : M.Sc. (Ag.) Horticulture
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soluble solid(%). 100 seed weight, fruit yield per plot, fruit yield (q/ha), duration of
crop (sowing to last harvest).
The analysis of variance revealed that mean sum of squares due to
genotypes were highly significant for all characters. The ANOVA revealed that
almost all sum of square characters were found significant and indicated that the
presence of variability in the genotype. The genotype IBG 11 was found higher
yield and IBG 8 followed earliest.
Correlation coefficient analysis observed that number of fruits per plant
and node number of first female flower exhibited the significant positive
correlation with yield per plot. The path analysis confined that traits like direct
effect of node number of first female flower, days to fruit set, fruit length, fruit
girth, fruit weight, number of fruits per plant, total soluble solid and duration of
crop had direct effect on fruit yield in bottle gourd.
The divergence analysis revealed the presence of appreciable amount of
genetic diversity in the tested genotypes. Thirty one genotypes were grouped into
five clusters. The genotypes belongs the cluster V viz. IBG 7, IBG 8, IBG 9, IBG
10, IBG 11, IBG 16, IBG 17, IBG 18, IBG 25, IBG 28 may be utilized as parents
for hybridization in future breeding programmes. Higher contribution to words
divergence was contributed by fruit length (23.87).
Inter crossing of genotypes from diversed clusters, showing superior mean
performance may help in obtaining higher fruit yield per plant with growth and
fruit characters of lead components in bottle gourd for Chhattisgarh plains.
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84 p.