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

Milgate, Andrew and Ovenden, Ben and Adorada, Dante and Lisle, Chris and Lacy, John and Coombes, Neil (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). pp. 782-792. ISSN 1836-0947

Abstract

Research into winter cereal breeding in Australia has focused primarily on studying the effects of rainfed environments. These studies typically show large genotype x 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 andthat, in these irrigated rials, 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.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty / Department / School: No Faculty
Date Deposited: 30 Jan 2017 06:19
Last Modified: 15 Mar 2017 05:28
Uncontrolled Keywords: triticale, irrigation, yield, lodging, genotype x environment
Fields of Research : 07 Agricultural and Veterinary Sciences > 0703 Crop and Pasture Production > 070308 Crop and Pasture Protection (Pests, Diseases and Weeds)
Socio-Economic Objective: B Economic Development > 82 Plant Production and Plant Primary Products > 8205 Winter Grains and Oilseeds > 820599 Winter Grains and Oilseeds not elsewhere classified
Identification Number or DOI: 10.1071/CP14357
URI: http://eprints.usq.edu.au/id/eprint/30019

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