Concurrent Drought and Temperature Stress in Rice—A Possible Result of the Predicted Climate Change: Effects on Yield Attributes, Eating Characteristics, and Health Promoting Compounds

Despite the likely increasing co-occurrence of drought and heat stress, not least in equatorial regions, due to climate change, little is known about the combinational effect of these stresses on rice productivity and quality. This study evaluated the impact of simultaneous drought and temperature s...

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Main Authors:	Alphonsine Mukamuhirwa, Helena Persson Hovmalm, Hans Bolinsson, Rodomiro Ortiz, Obedi Nyamangyoku, Eva Johansson
Format:	Article
Language:	English
Published:	MDPI AG 2019-03-01
Series:	International Journal of Environmental Research and Public Health
Subjects:	<i>Oryza sativa</i> grain yield quality bioactive compounds drought temperature
Online Access:	https://www.mdpi.com/1660-4601/16/6/1043

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spelling	doaj-99cf062ea91f41f3a43695ab227b738e2020-11-24T21:48:25ZengMDPI AGInternational Journal of Environmental Research and Public Health1660-46012019-03-01166104310.3390/ijerph16061043ijerph16061043Concurrent Drought and Temperature Stress in Rice—A Possible Result of the Predicted Climate Change: Effects on Yield Attributes, Eating Characteristics, and Health Promoting CompoundsAlphonsine Mukamuhirwa0Helena Persson Hovmalm1Hans Bolinsson2Rodomiro Ortiz3Obedi Nyamangyoku4Eva Johansson5Department of Plant Breeding, Swedish University of Agricultural Sciences, P.O. Box 101, 23053 Alnarp, SwedenDepartment of Plant Breeding, Swedish University of Agricultural Sciences, P.O. Box 101, 23053 Alnarp, SwedenDepartment of Food Technology, Engineering and Nutrition, Lund University, P.O. Box 124, 22100 Lund, SwedenDepartment of Plant Breeding, Swedish University of Agricultural Sciences, P.O. Box 101, 23053 Alnarp, SwedenCollege of Agriculture, Animal Sciences and Veterinary Medicine, University of Rwanda, P.O. Box 210 Ruhengeri, RwandaDepartment of Plant Breeding, Swedish University of Agricultural Sciences, P.O. Box 101, 23053 Alnarp, SwedenDespite the likely increasing co-occurrence of drought and heat stress, not least in equatorial regions, due to climate change, little is known about the combinational effect of these stresses on rice productivity and quality. This study evaluated the impact of simultaneous drought and temperature stress on growth, grain yield, and quality characteristics of seven rice cultivars from Rwanda, grown in climate chambers. Two temperature ranges—23/26 °C night/day and 27/30 °C night/day—together with single or repeated drought treatments, were applied during various plant developmental stages. Plant development and yield were highly influenced by drought, while genotype impacted the quality characteristics. The combination of a high temperature with drought at the seedling and tillering stages resulted in zero panicles for all evaluated cultivars. The cultivar ‘Intsindagirabigega’ was most tolerant to drought, while ‘Zong geng’ was the most sensitive. A “stress memory„ was recorded for ‘Mpembuke’ and ‘Ndamirabahinzi’, and these cultivars also had a high content of bioactive compounds, while ’Jyambere’ showed a high total protein content. Thus, climate change may severely impact rice production. The exploitation of genetic diversity to breed novel rice cultivars that combine drought and heat stress tolerance with high nutritional values is a must to maintain food security.https://www.mdpi.com/1660-4601/16/6/1043<i>Oryza sativa</i>grain yieldqualitybioactive compoundsdroughttemperature
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Alphonsine Mukamuhirwa Helena Persson Hovmalm Hans Bolinsson Rodomiro Ortiz Obedi Nyamangyoku Eva Johansson
spellingShingle	Alphonsine Mukamuhirwa Helena Persson Hovmalm Hans Bolinsson Rodomiro Ortiz Obedi Nyamangyoku Eva Johansson Concurrent Drought and Temperature Stress in Rice—A Possible Result of the Predicted Climate Change: Effects on Yield Attributes, Eating Characteristics, and Health Promoting Compounds International Journal of Environmental Research and Public Health <i>Oryza sativa</i> grain yield quality bioactive compounds drought temperature
author_facet	Alphonsine Mukamuhirwa Helena Persson Hovmalm Hans Bolinsson Rodomiro Ortiz Obedi Nyamangyoku Eva Johansson
author_sort	Alphonsine Mukamuhirwa
title	Concurrent Drought and Temperature Stress in Rice—A Possible Result of the Predicted Climate Change: Effects on Yield Attributes, Eating Characteristics, and Health Promoting Compounds
title_short	Concurrent Drought and Temperature Stress in Rice—A Possible Result of the Predicted Climate Change: Effects on Yield Attributes, Eating Characteristics, and Health Promoting Compounds
title_full	Concurrent Drought and Temperature Stress in Rice—A Possible Result of the Predicted Climate Change: Effects on Yield Attributes, Eating Characteristics, and Health Promoting Compounds
title_fullStr	Concurrent Drought and Temperature Stress in Rice—A Possible Result of the Predicted Climate Change: Effects on Yield Attributes, Eating Characteristics, and Health Promoting Compounds
title_full_unstemmed	Concurrent Drought and Temperature Stress in Rice—A Possible Result of the Predicted Climate Change: Effects on Yield Attributes, Eating Characteristics, and Health Promoting Compounds
title_sort	concurrent drought and temperature stress in rice—a possible result of the predicted climate change: effects on yield attributes, eating characteristics, and health promoting compounds
publisher	MDPI AG
series	International Journal of Environmental Research and Public Health
issn	1660-4601
publishDate	2019-03-01
description	Despite the likely increasing co-occurrence of drought and heat stress, not least in equatorial regions, due to climate change, little is known about the combinational effect of these stresses on rice productivity and quality. This study evaluated the impact of simultaneous drought and temperature stress on growth, grain yield, and quality characteristics of seven rice cultivars from Rwanda, grown in climate chambers. Two temperature ranges—23/26 °C night/day and 27/30 °C night/day—together with single or repeated drought treatments, were applied during various plant developmental stages. Plant development and yield were highly influenced by drought, while genotype impacted the quality characteristics. The combination of a high temperature with drought at the seedling and tillering stages resulted in zero panicles for all evaluated cultivars. The cultivar ‘Intsindagirabigega’ was most tolerant to drought, while ‘Zong geng’ was the most sensitive. A “stress memory„ was recorded for ‘Mpembuke’ and ‘Ndamirabahinzi’, and these cultivars also had a high content of bioactive compounds, while ’Jyambere’ showed a high total protein content. Thus, climate change may severely impact rice production. The exploitation of genetic diversity to breed novel rice cultivars that combine drought and heat stress tolerance with high nutritional values is a must to maintain food security.
topic	<i>Oryza sativa</i> grain yield quality bioactive compounds drought temperature
url	https://www.mdpi.com/1660-4601/16/6/1043
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Concurrent Drought and Temperature Stress in Rice—A Possible Result of the Predicted Climate Change: Effects on Yield Attributes, Eating Characteristics, and Health Promoting Compounds

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