高温胁迫条件下水稻生理生化指标与产量性状的相关性研究  

The Relationships Between Physiological and Biochemical Indexes and the Yield Characteristics of Rice Under High Temperature Stress

作　　者：李万成[1,2] 朱启升[2] 王云生[1] 王士梅[2] 陈秀晨[2] 张德文[2] 汪婉琳[2] 

机构地区：[1]安徽农业大学生命科学学院,合肥230036 [2]安徽省农科院学院水稻研究所,合肥230031

出　　处：《中国农学通报》2013年第9期5-10,共6页Chinese Agricultural Science Bulletin

基　　金：国家科技支撑计划粮食丰产工程项目"水稻减灾高效生产技术体系研究"(2006BAD02A06-18);国家"863"课题"水稻航天工程育种技术与品种创制"(2007AA100101)

摘　　要：为探索水稻发育的不同时期高温胁迫对其产量性状的影响与其生理生化指标变化的相关性,试图找出研究耐热品种和热敏品种差异的最适时期。本研究分别在耐热性不同的水稻品种的不同生育时期进行了高温胁迫处理。灌浆结实期发生高温胁迫,品种间差异较大,耐热品种的可溶性糖含量的增加幅度(64%)明显高于热敏感品种(32%),耐热品种可溶性蛋白含量增加幅度较大(增加了41%),而热敏感品种减少幅度较大(减少了16%)。耐热品种和热敏感品种产量性状的差异在灌浆结实期表现的尤为突出,耐热品种还保持较高的结实率和谷重,而热敏感品种反之。灌浆结实期可能是研究水稻耐热性差异的一个最佳时期。The aim of the paper was to study the differences of the effects that the high temperature produces on the seed setting rate and grain weight and the relationship between the physiological and biochemical indexes, and also to find the best period to study the high-temperature resistance variety and high temperature sensitive variety. This paper utilized high temperature stress to treat the high temperature sensitive variety at different stages. The results indicated that in grain-filling and seed setting stages, the high-temperature resistance variety still maintained the higher level and the differences between varieties was significant. The increase of soluble sugar content of the high-temperature resistance variety （64%） exceeded the increase of soluble sugar content of the high-temperature sensitive variety （32%）. And the increase of soluble protein content of the high-temperature resistance variety was significant （Which had increased of 41%）, while the high temperature sensitive variety reduced greatly （Which had reduced 16%）. The high temperature stress occurring on the grain-filling and seed setting stages could distinguish the high-temperature resistance variety and high temperature sensitive variety, and it also maintained a high lever of seed setting rate and seed weigh, so the grain-filling and seed setting stages were probably the best periods to research the high-temperature resistance variety and high temperature sensitive variety.

关 键 词：水稻 高温胁迫 生理生化指标 产量性状 

分 类 号：Q945[生物学—植物学]