南方农业学报2012，Vol.43Issue(6)：753-758,6.DOI:10.3969/j:issn.2095-1191.2012.06.753
水稻花期高温胁迫影响颖花育性生理机理研究进展
Advances in physiological mechanisms of spikelet fertility in rice at flowering stage under high temperature stress
摘要
Abstract
The local short and extremely high temperature resulted due to rise in global warming is expected to have a tremendous impact on growth and physiological metabolisms of rice, and periodic episodes of heat stress are predicted to occur more frequently in the near future. Flowering stage is the most sensitive stage to high temperature, and very easily led to develop sterility of spikelet. Significant difference in response to temperature stress exists among rice genotypes. When rice flowers at cooler time of day, it has higher pollen activity, larger anther, longer dehiscence length and pores of anther basal, which are important phenotypic indices for high temperature tolerance. The expression of heat shock protein, enhancing antioxidant activity of anther, keeping stability of structural proteins, enzymes and membranes are important physiological mechanisms for strengthening thermo tolerance of stigma and its pollens. At present, many researchers have studied the fertilization and seed setting characteristics of rice spikelet which was affected by high temperature stress, and the morphological characteristics and physiological mechanism of rice tolerance to high temperature, while the strategies and methods to mitigate heat stress in rice are still very poor, therefore, these should be further explored and studied on the basis of previous researches.关键词
水稻/花期/高温胁迫/颖花育性/生理机理/策略Key words
rice/ flowering stage/ high temperature stress/ spikelet fertility/ physiological mechanism/ strategy分类
农业科技引用本文复制引用
陈仁天,唐茂艳,王强,陈雷,李炜,陈畅,Farooq Shah,梁天锋..水稻花期高温胁迫影响颖花育性生理机理研究进展[J].南方农业学报,2012,43(6):753-758,6.基金项目
公益性行业(农业)科研专项项目(201203029) （农业）
广西自然科学基金项目(2011GXNSFA018104) （2011GXNSFA018104）
广西科学研究与技术开发计划项目(桂科攻1123001-1A) （桂科攻1123001-1A）
广西农业科学院科技发展基金重点项目(桂农科2011JZ03) （桂农科2011JZ03）
