Journal ArticleDOI
Impact of high-temperature stress on rice plant and its traits related to tolerance
TLDR
Replacement of heat-sensitive cultivars with heat-tolerant ones, adjustment of sowing time, choice of varieties with a growth duration allowing avoidance of peak stress periods, and exogenous application of plant hormones are some of the adaptive measures that will help in the mitigation of forecast yield reduction due to global warming.Abstract:
The predicted 2–4°C increment in temperature by the end of the 21st Century poses a threat to rice production. The impact of high temperatures at night is more devastating than day-time or mean daily temperatures. Booting and flowering are the stages most sensitive to high temperature, which may sometimes lead to complete sterility. Humidity also plays a vital role in increasing the spikelet sterility at increased temperature. Significant variation exists among rice germplasms in response to temperature stress. Flowering at cooler times of day, more pollen viability, larger anthers, longer basal dehiscence and presence of long basal pores are some of the phenotypic markers for high-temperature tolerance. Protection of structural proteins, enzymes and membranes and expression of heat shock proteins (HSPs) are some of the biochemical processes that can impart thermo-tolerance. All these traits should be actively exploited in future breeding programmes for developing heat-resistant cultivars. Replacement of heat-sensitive cultivars with heat-tolerant ones, adjustment of sowing time, choice of varieties with a growth duration allowing avoidance of peak stress periods, and exogenous application of plant hormones are some of the adaptive measures that will help in the mitigation of forecast yield reduction due to global warming.read more
Citations
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Journal ArticleDOI
Temperature extremes: Effect on plant growth and development
TL;DR: This paper found that warmer temperatures increased the rate of phenological development, however, there was no effect on leaf area or vegetative biomass compared to normal temperatures, and the major impact of warmer temperatures was during the reproductive stage of development and in all cases grain yield in maize was significantly reduced by as much as 80−90% from a normal temperature regime.
Climate Change and Agriculture in the United States: Effects and Adaptation
Charles L. Walthall,Christoper J. Anderson,Lance H. Baumgard,Eugene S. Takle,Lois Wright-Morton +4 more
Journal ArticleDOI
Heat stress in cereals: Mechanisms and modelling
TL;DR: The authors found that the observed impacts of heat stress on crop yield are the end result of the integration of many processes, not all of which will be affected by a “high temperature” regime.
Journal ArticleDOI
Rice responses to rising temperatures – challenges, perspectives and future directions
TL;DR: This review addresses the importance of vapour pressure deficit under fully flooded paddies and increased vulnerability of rice production to heat stress or intermittent occurrence of combined heat and drought stress under emerging water-saving rice technologies, and model and estimate heat stress-induced spikelet sterility taking South Asia as a case study.
Book ChapterDOI
Extreme Temperature Responses, Oxidative Stress and Antioxidant Defense in Plants
TL;DR: In this article, the difficulty of climate change is further added considering its precisely projecting potential agricultural impacts, and it was mentioned that the decade from 2000 to 2009 was the warmest ever recorded.
References
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Journal ArticleDOI
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TL;DR: A map-based, finished quality sequence that covers 95% of the 389 Mb rice genome, including virtually all of the euchromatin and two complete centromeres, and finds evidence for widespread and recurrent gene transfer from the organelles to the nuclear chromosomes.
Journal ArticleDOI
Heat tolerance in plants: An overview
TL;DR: C crop heat tolerance can be enhanced by preconditioning of plants under different environmental stresses or exogenous application of osmoprotectants such as glycinebetaine and proline, and by traditional and contemporary molecular breeding protocols and transgenic approaches.
Journal ArticleDOI
Rice yields decline with higher night temperature from global warming
Shaobing Peng,Jianliang Huang,J. E. Sheehy,Rebecca C. Laza,Romeo M. Visperas,Xuhua Zhong,Grace S. Centeno,Gurdev S. Khush,Kenneth G. Cassman +8 more
TL;DR: This report provides a direct evidence of decreased rice yields from increased nighttime temperature associated with global warming and a close linkage between rice grain yield and mean minimum temperature during the dry cropping season.
Journal ArticleDOI
Potential impact of climate change on world food supply
TL;DR: A global assessment of the potential impact of climate change on world food supply suggests that doubling of the atmospheric carbon dioxide concentration will lead to only a small decrease in global crop production.