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

Abstract

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 language	English
Pages	22
Number of pages	1
Publication status	Published - 12 Sept 2018
Event	68th Australasian Grain Science Conference - Charles Sturt University, Wagga Wagga, Australia Duration: 10 Sept 2018 → 13 Sept 2018 https://www.ausgrainscience.org.au/wp-content/uploads/Conference2018/Booklet-2018.pdf (Conference booklet)

Conference

Conference	68th Australasian Grain Science Conference
Abbreviated title	Grain Science Transforming our Future
Country/Territory	Australia
City	Wagga Wagga
Period	10/09/18 → 13/09/18
Internet address	https://www.ausgrainscience.org.au/wp-content/uploads/Conference2018/Booklet-2018.pdf (Conference booklet)

Cite this

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title = "Impact of temperature stress during late grain filling on head rice yield",

abstract = "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.",

author = "Fawad Ali and Waters, {Daniel LE} and Ovenden, {Ben W.} and Peter Bundock and Raymond, {Carolyn A.} and Tobias Kretzschmar and Rose, {Terry J.}",

year = "2018",

month = sep,

day = "12",

language = "English",

pages = "22",

note = "68th Australasian Grain Science Conference, Grain Science Transforming our Future ; Conference date: 10-09-2018 Through 13-09-2018",

url = "https://www.ausgrainscience.org.au/wp-content/uploads/Conference2018/Booklet-2018.pdf",

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TY - CONF

T1 - Impact of temperature stress during late grain filling on head rice yield

AU - Ali, Fawad

AU - Waters, Daniel LE

AU - Ovenden, Ben W.

AU - Bundock, Peter

AU - Raymond, Carolyn A.

AU - Kretzschmar, Tobias

AU - Rose, Terry J.

PY - 2018/9/12

Y1 - 2018/9/12

N2 - 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.

AB - 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.

M3 - Abstract

SP - 22

T2 - 68th Australasian Grain Science Conference

Y2 - 10 September 2018 through 13 September 2018

ER -

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

Abstract

Conference

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