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Genetic analysis in intra- and inter-specific crosses of tree willows

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Title Genetic analysis in intra- and inter-specific crosses of tree willows
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Creator Not Available
 
Subject General combining ability, specific combining ability, dominance variance, diallel mating
 
Description Not Available
Twenty one full-sib families derived from intra- and interspecific controlled crosses were analysed to study different
genetic parameters. Estimates of the general combining
ability (GCA) variance were found to be less than the
specific combining ability (SCA) variance for all the
parameters. The dominance variance was more than the
additive variance for all the parameters studied. The degree
of dominance ranged between 1.73 (per cent successful
crosses) and 5.35 (% germination). Moderately high (0.42
for % successful crosses) to low (0.15 for seed per capsule)
narrow sense heritibilities and high heritability in broad
sense (0.74 to 0.99) for per cent successful crosses and
seeds per catkin was recorded. GCA effects were positive
and significant for S. tetrasperma(TFB), S. tetrasperma
(TWE) and S. tetrasperma(LNM) male parents for all the
parameters while S. alba (SE- 63-007) exhibited significantly
positive effects for number of seeds/catkin. Among females,
S. tetrasperma(LP), S. tetrasperma(LNF) and S. tetrasperma
(LN) depicted positive and significant GCA effects for
number of seeds/ catkin and per cent germination,
respectively whereas crosses, S. matsudana(PN-227) x S.
alba (Kashmiri) and S.tetrasperma(LNF) x S. tetrasperma
(LNM) exhibited positive and significant SCA effects for
per cent successful crosses. Cross S. matsudana(PN-227)
x S. alba (Kashmiri) showed positive significant SCA effects
for number of seeds/ capsule
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Date 2018-11-13T09:11:37Z
2018-11-13T09:11:37Z
2015-07-01
 
Type Research Paper
 
Identifier Not Available
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http://krishi.icar.gov.in/jspui/handle/123456789/10854
 
Language English
 
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Publisher Not Available