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Genetic improvement of triticale for irrigated systems in south-eastern Australia: a study of genotype and genotype x environment interactions

Journal Article


Abstract


  • Research into winter cereal breeding in Australia has focused primarily on studying the effects of rainfed environments. These studies typically show large genotype × environment (GE) interactions, and the complexity of these interactions acts as an impediment to the efficient selection of improved varieties. Wheat has been studied extensively; however, there are no published studies on the GE interactions of triticale in Australia under irrigated production systems. We conducted trials on 101 triticale genotypes at two locations over 4 years under intensive irrigated management practices and measured the yield potential, GE interactions, heritability and estimated genetic gain of yield, lodging resistance and several other traits important for breeding triticale. We found that high yield potential exceeding 10 t ha–1 exists in the Australian germplasm tested and that, in these irrigated trials, genotype accounted for a high proportion of the variability in all measured traits. All genetic parameters such as heritability and estimated genetic gain were high compared with rainfed studies. Breeding of triticale with improved yield and lodging resistance for irrigated environments is achievable and can be pursued with confidence in breeding programs.

Authors


  •   Milgate, A w. (external author)
  •   Ovenden, Ben (external author)
  •   Adorada, Dante (external author)
  •   Lisle, Chris J.
  •   Lacy, John (external author)
  •   Coombes, Neil E. (external author)

Publication Date


  • 2015

Citation


  • Milgate, A. W., Ovenden, B., Adorada, D., Lisle, C. J., Lacy, J. & Coombes, N. (2015). Genetic improvement of triticale for irrigated systems in south-eastern Australia: a study of genotype and genotype x environment interactions. Crop and Pasture Science, 66 (8), 782-792.

Scopus Eid


  • 2-s2.0-84938302340

Number Of Pages


  • 10

Start Page


  • 782

End Page


  • 792

Volume


  • 66

Issue


  • 8

Place Of Publication


  • Australia

Abstract


  • Research into winter cereal breeding in Australia has focused primarily on studying the effects of rainfed environments. These studies typically show large genotype × environment (GE) interactions, and the complexity of these interactions acts as an impediment to the efficient selection of improved varieties. Wheat has been studied extensively; however, there are no published studies on the GE interactions of triticale in Australia under irrigated production systems. We conducted trials on 101 triticale genotypes at two locations over 4 years under intensive irrigated management practices and measured the yield potential, GE interactions, heritability and estimated genetic gain of yield, lodging resistance and several other traits important for breeding triticale. We found that high yield potential exceeding 10 t ha–1 exists in the Australian germplasm tested and that, in these irrigated trials, genotype accounted for a high proportion of the variability in all measured traits. All genetic parameters such as heritability and estimated genetic gain were high compared with rainfed studies. Breeding of triticale with improved yield and lodging resistance for irrigated environments is achievable and can be pursued with confidence in breeding programs.

Authors


  •   Milgate, A w. (external author)
  •   Ovenden, Ben (external author)
  •   Adorada, Dante (external author)
  •   Lisle, Chris J.
  •   Lacy, John (external author)
  •   Coombes, Neil E. (external author)

Publication Date


  • 2015

Citation


  • Milgate, A. W., Ovenden, B., Adorada, D., Lisle, C. J., Lacy, J. & Coombes, N. (2015). Genetic improvement of triticale for irrigated systems in south-eastern Australia: a study of genotype and genotype x environment interactions. Crop and Pasture Science, 66 (8), 782-792.

Scopus Eid


  • 2-s2.0-84938302340

Number Of Pages


  • 10

Start Page


  • 782

End Page


  • 792

Volume


  • 66

Issue


  • 8

Place Of Publication


  • Australia