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Genetical Studies in Papaya (Carica papaya L.)

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Title Genetical Studies in Papaya (Carica papaya L.)
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Creator G. Karunakaran, H. Ravishankar and M.R. Dinesh
 
Subject Coorg Honey Dew, genotypic, half-sib, phenotypic, sibmating, variability
 
Description Not Available
Genetical studies in papaya were carried out using the variety Coorg Honey
Dew. The purification programme in the variety Coorg Honey Dew was taken up
and the data were recorded from the S2 to S4 generation of sibmated progenies. The
variety Coorg Honey Dew yields big sized fruits of about 1.5-2.0 kg, pulp is yellow in
colour and fruits are sweet to taste with a TSS of 12°Brix. The sibmated progenies
were studied for uniformity in fruit size and shape. A total of ten half-sib families
(25 trees/family) were used for the study. Genotypic variation and phenotypic
variation was highest in S2 generation, while in S4 variation it was observed to be
low. The PV and GV were observed to decline with the progress of the generation.
The genotypic coefficient of variation was lesser than the phenotypic coefficient of
variation implying the role of environment influencing the characters. High
heritability was recorded for all the characters except inter nodal length and pulp
thickness. Very little difference was noticed in the heritability values between S3 to S4
generation. Among the characters, high genetic advance as percent mean was
recorded for the characters of fruit weight, fruit length and number of seeds, while
other characters exhibit moderate to low. Heritability and genetic advance as
percent mean was obtained high for the characters of fruit weight and fruit length.
The correlation studies showed that plant height at first fruiting were positively
correlated with fruit length and first flowering height. The study indicated that three
generation of sibmating considerably reduced the variability in morphological and
yield characters.
Not Available
 
Date 2019-10-19T09:49:18Z
2019-10-19T09:49:18Z
2010-01-01
 
Type Research Paper
 
Identifier https://doi.org/10.17660/ActaHortic.2010.851.13
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/23664
 
Language English
 
Relation Not Available;
 
Publisher Acta Horti.