数字农科院2.0

Mechanisms and Adaptation Strategies to Improve Heat Tolerance in Rice. A Review

文献类型： 外文期刊

作者： Shahbaz Khan ; Sumera Anwar (2)*; M. Yasin Ashraf ; Binish Khaliq ; Min Sun ; Sajid Hussain ; Zhi-qiang Gao *; Hafeez Noor ; Sher Alam

作者机构：

关键词： Global Warming; Rice Genotypes; High Temperature; Breeding; Genetic Variations; Transgenic Rice

期刊名称： Plants

ISSN： 2223-7747

年卷期： 2019 年 8 卷 11 期

页码：

收录情况： JCR（2021版）

摘要： The incidence of short episodes of high temperature in the most productive rice growing region is a severe threat for sustainable rice production. Screening for heat tolerance and breeding to increase the heat tolerance of rice is major objective in the situation of recent climate change. Replacing sensitive genotypes with heat tolerant cultivars, modification in sowing time, and use of growth regulators are some of the adaptive strategies for the mitigation of yield reduction by climate change. Different strategies could be adopted to enhance the thermos-tolerance of rice by (1) the modification of agronomic practices i.e., adjusting sowing time or selecting early morning flowering cultivars; (2) induction of acclimation by using growth regulators and fertilizers; (3) selecting the genetically heat resistant cultivars by breeding; and, (4) developing genetic modification. Understanding the differences among the genotypes could be exploited for the identification of traits that are responsible for thermo-tolerance for breeding purpose. The selection of cultivars that flowers in early morning before the increase of temperature, and having larger anthers with long basal pore, higher basal dehiscence, and pollen viability could induce higher thermo-tolerance. Furthermore, the high expression of heat shock proteins could impart thermo-tolerance by protecting structural proteins and enzymes. Thus, these traits could be considered for breeding programs to develop resistant cultivars under a changing climate.

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