Comparative analysis of Australian and Canadian barleys for seed dormancy and malting quality
Xiao-Qi Zhang, Sharon Westcott, Joe Panozzo, Mehmet Cakir, Stefan Harasymow, Allen Tarr, Sue Broughton, Reg Lance, Chengdao Li
EUPHYTICA | SPRINGER | Published : 2012
The association between high malting quality and pre-harvest sprouting (PHS) susceptibility is a key challenge when developing new malting barley varieties. A new malting barley variety Baudin has successfully combined high malting quality and PHS tolerance. A doubled haploid population was developed for mapping PHS tolerance and seed dormancy from a cross of Baudin × AC Metcalfe using 233 molecular markers. Three QTLs were mapped for seed dormancy based on the standard germination test at 24, 48 and 72 h. One major QTL was mapped to the long arm of chromosome 5H controlling seed dormancy and PHS tolerance from Baudin. Two other minor QTLs were identified from Baudin on chromosomes 3 and 7H...View full abstract
The project is supported by the Australian Grain Research and Development Corporation, Australian Winter Cereal Molecular Marker Program and CRC Molecular Plant Breeding. We thank Ms Cathy Burchell for her support with the field experiments.