Asian Journal of Bio Science

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Selection Indices for Yield Improvement in Bread Wheat under Late Sown Condition


Affiliations
1 Department of Genetics and Plant Breeding, Junagadh Agricultural University, Junagadh (Gujarat), India
2 Pulses Research Station (J.A.U.), Junagadh (Gujarat), India
     

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Investigation was carried-out to assess the selection indices in 40 genotypes of wheat (Triticum aestivum L.) in limited irrigation under late sowing condition. Sixty-three selection indices, involving grain yield per plant and five yield components, were constructed using the discriminant function technique. The efficiency of selection increased with the inclusion of more number of characters in the index. The selection index based on six characters viz., grain yield per plant, days to maturity, number of productive tillers per plant, number of grain per main spike, biological yield per plant and harvest index under limited irrigated condition exhibited maximum gain and relative efficiency. It is expected that grain yield could be improved if due consideration is given to these traits in future breeding programme of wheat.

Keywords

Wheat, Discriminant Function, Relative Efficiency, Selection Indices, Expected Genetic Advance.
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  • Selection Indices for Yield Improvement in Bread Wheat under Late Sown Condition

Abstract Views: 529  |  PDF Views: 1

Authors

G. D. Raiyani
Department of Genetics and Plant Breeding, Junagadh Agricultural University, Junagadh (Gujarat), India
Komal Patel
Department of Genetics and Plant Breeding, Junagadh Agricultural University, Junagadh (Gujarat), India
R. M. Javia
Pulses Research Station (J.A.U.), Junagadh (Gujarat), India
V. J. Bhatiya
Department of Genetics and Plant Breeding, Junagadh Agricultural University, Junagadh (Gujarat), India
V. V. Ramani
Pulses Research Station (J.A.U.), Junagadh (Gujarat), India

Abstract


Investigation was carried-out to assess the selection indices in 40 genotypes of wheat (Triticum aestivum L.) in limited irrigation under late sowing condition. Sixty-three selection indices, involving grain yield per plant and five yield components, were constructed using the discriminant function technique. The efficiency of selection increased with the inclusion of more number of characters in the index. The selection index based on six characters viz., grain yield per plant, days to maturity, number of productive tillers per plant, number of grain per main spike, biological yield per plant and harvest index under limited irrigated condition exhibited maximum gain and relative efficiency. It is expected that grain yield could be improved if due consideration is given to these traits in future breeding programme of wheat.

Keywords


Wheat, Discriminant Function, Relative Efficiency, Selection Indices, Expected Genetic Advance.

References