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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

Mukamuhirwa, Alphonsine and Persson Hovmalm, Helena and Bolinsson, Hans and Ortiz Rios, Rodomiro Octavio and Nyamangyoku, Obedi and Johansson, Eva (2019). 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. 16, 1-17
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Official URL: https://www.mdpi.com/1660-4601/16/6/1043

Abstract

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.

Authors/Creators:Mukamuhirwa, Alphonsine and Persson Hovmalm, Helena and Bolinsson, Hans and Ortiz Rios, Rodomiro Octavio and Nyamangyoku, Obedi and Johansson, Eva
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
Series/Journal:International journal of environmental research and public health (1660-4601)
Year of publishing :2019
Volume:16
Page range:1-17
Number of Pages:17
Publisher:MDPI
ISSN:1660-4601
Language:English
Publication Type:Journal article
Refereed:Yes
Article category:Scientific peer reviewed
Version:Published version
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Agricultural Science
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 405 Other Agricultural Sciences > Environmental Sciences related to Agriculture and Land-use
Keywords:Oryza sativa, grain yield, quality, bioactive compounds, drought, temperature
URN:NBN:urn:nbn:se:slu:epsilon-e-5315
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-5315
Additional ID:
Type of IDID
DOI10.3390/ijerph16061043
ID Code:16027
Faculty:LTV - Fakulteten för landskapsarkitektur, trädgårds- och växtproduktionsvetenskap
Department:(LTJ, LTV) > Department of Plant Breeding (from 130101)
Deposited By: SLUpub Connector
Deposited On:25 Mar 2019 13:26
Metadata Last Modified:31 Mar 2019 13:46

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