Mr Yunlong Bai1, Dr Ali Khoddami1, A/Prof Charles Warren1, Prof. Daniel Tan1
1The University of Sydney, Sydney, Australia
Biography:
Yunlong Bai is a PhD student at the University of Sydney. He is experienced in grain chemical analysis.
Abstract:
This study aimed to investigate the impact of high temperature on the protein quality and chemical composition of two wheat cultivars with varying tolerance to high temperature. The experiment used two heat-tolerant cultivars, Berkut (highly heat-tolerant) and Sokoll (moderately heat-tolerant), that were grown in Narrabri (NSW), Horsham (VIC), and Merredin (WA) at normal and late sowing dates during the hot year of 2019. Wheat yield, flour colour, crude protein, and protein fractions were measured along with starch and total fibre contents. Compared with the normal sowing date, grain yield, starch, fibre, globulin and glutenin/gliadin ratio of Berkut significantly decreased for the late sowing date in the hot location of Merredin but did not change significantly in the moderately warm locations (Narrabri and Horsham). There was a similar trend for Sokoll during the late sowing period in Narrabri, Horsham, and Merredin. The current research outcome suggests that in hot years such as 2019, Berkut could be a more suitable variety for growing in moderately warm locations such as Horsham and Narrabri as its yield and quality were less affected by high temperatures.