中国农业科学2017，Vol.50Issue(5)：783-791,9.DOI:10.3864/j.issn.0578-1752.2017.05.001
小麦耐热性的生理遗传研究进展
Progresses in Research of Physiological and Genetic Mechanisms of Wheat Heat Tolerance
摘要
Abstract
Wheat (Triticum aestivum) is a second largest staple crop in China,which closely related to the improvement of people's living standards,and high and stable yield is the most important target in wheat breeding program.Nowadays,heat stress has become one of the limiting factors for wheat production,because wheat is a chimonophilous crop,and very sensitive to heat stress especially at productive stage,which would cause decrease in both wheat quantity and quality.Recently,to analyze the physiological,genetic and molecular basis of heat tolerance in wheat,researchers have developed diverse segregation populations with different heat sensitivities,and mapped dozens of heat-tolerant QTLs on wheat chromosomes in terms of canopy temperature,grain filling duration,membrane stability and chlorophyll content,as well as heat sensitivity index of grain number and thousand kernel weight.In addition,transcriptome,proteome,and epigenome analyses have been applied to identify heat responsive genes,miRNAs and long non-coding RNAs,and some of which have been proved to contribute to the heat tolerance in wheat.Although receptors of heat signal is not yet identified,calcium ion channel and phytohormone e.g.ABA and SA exhibited a crucial role in signal transduction.In this paper,the progresses in research of heat-tolerance related QTL mapping,transcriptome,proteome and epigenome profiling and heat-responsive gene identification were summarized,and proposed that it is necessary to perform systematical evaluation of wheat germplasm,screening of allelic variation and analysis of underlying molecular mechanism for further utilization in wheat breeding program to develop wheat cultivars with high and stable yield in China.关键词
普通小麦/耐热性/分子机理Key words
common wheat/heat tolerance/molecular mechanism引用本文复制引用
辛明明,彭惠茹,倪中福,姚颖垠,孙其信..小麦耐热性的生理遗传研究进展[J].中国农业科学,2017,50(5):783-791,9.基金项目
国家重点研发计划(2016YFD0100600和2016YFD0101004)、农业部转基因专项(2016ZX08002-002)、国家自然科学基金(31561143013)、中央高校基本科研业务费专项资金(15054038) （2016YFD0100600和2016YFD0101004）
