不同胞质类型水稻对干旱胁迫的响应  

Response of rice varieties with different cytoplasm types to drought stress

作　　者：刘蓉[1] 杨国涛[1] 谢崇华[1] 胡运高[1] 席向阳[1] 

机构地区：[1]西南科技大学生命科学与工程学院,四川绵阳621010

出　　处：《浙江农业学报》2011年第4期676-679,共4页Acta Agriculturae Zhejiangensis

基　　金：四川省"十一五"育种攻关(2006YZGG1);西南科技大学研究生创新基金(09ycjj01);国家科技重大专项(2008ZX08001002)

摘　　要：利用WA型和G型籼型杂交水稻不育胞质与G46B转育构建的同核异质二元系,研究在PEG6000模拟干旱胁迫条件下的生理生化反应。发现两种水稻胞质对干旱胁迫的反应存在显著差异;在中度干旱胁迫条件下G型胞质综合指标优于WA型胞质;胞质对核基因的影响也存在显著差异,G型胞质可以显著提高叶绿素中Cha的比例。After generating the binary system of nuclear heterogeneity by using sterile cytoplasm of WA-type and G-type Indica rice varieties and transfer of G46B,we studied the physiological and biochemical responses under drought stress simulated by PEG6000 treatment.The results showed that the responses of the cytoplasm of the two rice varieties to drought stress differed significantly.The integrated index of G-type cytoplasm was better than that of WA-type＇s under moderate drought stress.Meanwhile,the effects of cytoplasm on nuclear genes were also significantly different and the proportion of Cha in chlorophyll was significantly increased in G-type cytoplasm.

关 键 词：杂交水稻 胞质 干旱 生理生化 

分 类 号：S511[农业科学—作物学]