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| Inheritance of Drought Tolerance in Chickpea (Cicer arietinum L.) Using Joint Scaling Test |
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E. Farshadfar,
S.H. Sabaghpour and N. Khaksar |
Abstract:
In order to study the inheritance and genetic analysis
of drought tolerance indicators a six generations of F1, F2,
BC1 and BC2 of the cross Hashem cultivar x ICCV96029
were studied using generation mean analysis. Genetic variation was found
for grain yield, biological yield, No. of pod/plant, No. of seed/plant,
earliness and proline content. High heterosis was observed in the F1
hybrid for grain yield, biological yield, harvest index, No. of pod/plant
and No. of seed/plant. Genetic analysis indicated dominance in the inheritance
of grain yield, biological yield, harvest index, seed weight and No. of
seed/plant, while over dominance gene action in the No. of pod/plant,
earliness and proline content. Moderate narrow-sense heritability estimates
were observed for biological yield, harvest index, seed weight, No. of
seed/plant and proline content. Moderate genetic advance for grain yield
and proline content indicated that direct and indirect selection through
correlated response could be effective. The joint scaling test revealed
additivex dominance = [ j ] for grain yield, biological yield and proline
content, while duplicate epistasis ( additive x dominance = [ j ] and
dominance x dominance = [ l ] ) were shown for No. of pod/plant and No.
of seed/pod. Since several important characters are influenced by dominance
and non-allelic gene interaction, it is advisable to delay selection to
later generation with increased homozygosity.
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How to cite this article:
E. Farshadfar, S.H. Sabaghpour and N. Khaksar, 2008. Inheritance of Drought Tolerance in Chickpea (Cicer arietinum L.) Using Joint Scaling Test. Journal of Applied Sciences, 8: 3931-3937.
DOI: 10.3923/jas.2008.3931.3937
URL: https://scialert.net/abstract/?doi=jas.2008.3931.3937
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