Effects of elevated air temperature on physiological characteristics of flag leaves and grain yield in rice

As an indispensable environment element for crop growth, air temperature has brought challenge for the sustainable development of rice (Oryza sativa L.) production. Elevated air temperature led to great loss in rice grain yield in many districts suffering from heat stress due to the greenhouse effec...

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Autores principales:	Qi-Hua,Liu, Xiu,Wu, Tian,Li, Jia-Qing,Ma, Xue-Biao,Zhou
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2013
Materias:	Physiological parameters dynamics yield attributes
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392013000200001
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spelling	oai:scielo:S0718-583920130002000012018-10-01Effects of elevated air temperature on physiological characteristics of flag leaves and grain yield in riceQi-Hua,LiuXiu,WuTian,LiJia-Qing,MaXue-Biao,Zhou Physiological parameters dynamics yield attributes As an indispensable environment element for crop growth, air temperature has brought challenge for the sustainable development of rice (Oryza sativa L.) production. Elevated air temperature led to great loss in rice grain yield in many districts suffering from heat stress due to the greenhouse effect worldwide, which has received more and more attention from researchers. A field experiment was conducted to investigate impacts of high air temperature (HAT) after rice heading stage on dynamics of SPAD values, soluble sugar, soluble protein, and malondialdehyde (MDA) contents of flag leaves, and grain yield attributes. The results showed that HAT significantly reduced SPAD values, soluble sugar and protein contents, seed-setting rate, number of filled grains per panicles, 1000-grain weight, and grain yield, while increased MDA content. There exists strong correlation between each physiological parameter and days from heading stage to maturity, which can be simulated by quadratic curve equation or linear regression equation. Under HAT, the enhanced MDA content and decreased soluble sugar content demonstrated the damage of membrane structure and photosynthesis function of rice flag leaves, which was partially attributed to the reduced SPAD value and soluble protein content. In the present experiment, rice seed-setting rate was more vulnerable to HAT than grain weight. The disturbance of physiological metabolism in flag leaves was a fundamental reason for the reduction of rice grain yield under HAT.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.73 n.2 20132013-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392013000200001en10.4067/S0718-58392013000200001
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Physiological parameters dynamics yield attributes
spellingShingle	Physiological parameters dynamics yield attributes Qi-Hua,Liu Xiu,Wu Tian,Li Jia-Qing,Ma Xue-Biao,Zhou Effects of elevated air temperature on physiological characteristics of flag leaves and grain yield in rice
description	As an indispensable environment element for crop growth, air temperature has brought challenge for the sustainable development of rice (Oryza sativa L.) production. Elevated air temperature led to great loss in rice grain yield in many districts suffering from heat stress due to the greenhouse effect worldwide, which has received more and more attention from researchers. A field experiment was conducted to investigate impacts of high air temperature (HAT) after rice heading stage on dynamics of SPAD values, soluble sugar, soluble protein, and malondialdehyde (MDA) contents of flag leaves, and grain yield attributes. The results showed that HAT significantly reduced SPAD values, soluble sugar and protein contents, seed-setting rate, number of filled grains per panicles, 1000-grain weight, and grain yield, while increased MDA content. There exists strong correlation between each physiological parameter and days from heading stage to maturity, which can be simulated by quadratic curve equation or linear regression equation. Under HAT, the enhanced MDA content and decreased soluble sugar content demonstrated the damage of membrane structure and photosynthesis function of rice flag leaves, which was partially attributed to the reduced SPAD value and soluble protein content. In the present experiment, rice seed-setting rate was more vulnerable to HAT than grain weight. The disturbance of physiological metabolism in flag leaves was a fundamental reason for the reduction of rice grain yield under HAT.
author	Qi-Hua,Liu Xiu,Wu Tian,Li Jia-Qing,Ma Xue-Biao,Zhou
author_facet	Qi-Hua,Liu Xiu,Wu Tian,Li Jia-Qing,Ma Xue-Biao,Zhou
author_sort	Qi-Hua,Liu
title	Effects of elevated air temperature on physiological characteristics of flag leaves and grain yield in rice
title_short	Effects of elevated air temperature on physiological characteristics of flag leaves and grain yield in rice
title_full	Effects of elevated air temperature on physiological characteristics of flag leaves and grain yield in rice
title_fullStr	Effects of elevated air temperature on physiological characteristics of flag leaves and grain yield in rice
title_full_unstemmed	Effects of elevated air temperature on physiological characteristics of flag leaves and grain yield in rice
title_sort	effects of elevated air temperature on physiological characteristics of flag leaves and grain yield in rice
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2013
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392013000200001
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_version_	1714205321440788480

Effects of elevated air temperature on physiological characteristics of flag leaves and grain yield in rice

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