Impact of temperature stress during late grain filling on head rice yield

Fawad Ali, Daniel LE Waters, Ben W. Ovenden, Peter Bundock, Carolyn A. Raymond, Tobias Kretzschmar, Terry J. Rose

Research output: Other contribution to conferenceAbstract


Global climate change represents a threat to the productivity of staple crops, including rice (Oryza sativa). Rice is sensitive to heat stress, but the impact of heat stress during grain filling on rice yields and grain quality traits such as % head rice yield has not been fully resolved. In the present study, we evaluated the impact of increased heat stress events in two japonica (Baru, Lemont) and one indica rice cultivar (Teqing) along with Californian line M205 (japonica) in a controlled environment. A 10 d heat stress event (31/23oC, 33/24oC and 35/25oC: day/night, 12h/12h) was applied to all cultivars from 10 days after 50% flowering/anthesis (DAF) to 20 DAF compared to a control treatment (28/21oC; day/night for 12h/12h). The percentage head rice yield is determined by the factor of the rice grain cracking during the milling operation. However, the knowledge is limited to the steps involved in milling operations, such as de-hulling and polishing.
Original languageEnglish
Number of pages1
Publication statusPublished - 12 Sep 2018
Event68th Australasian Grain Science Conference - Charles Sturt University, Wagga Wagga, Australia
Duration: 10 Sep 201813 Sep 2018 (Conference booklet)


Conference68th Australasian Grain Science Conference
Abbreviated titleGrain Science Transforming our Future
CityWagga Wagga
Internet address

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