不同核背景的玉米CMS系内源激素关系研究

The Study of the Relationship between Internal Hormone and Cytoplasmic Male Sterile of Different Nuclear Background in Maize

采用两套同核异质系 ,研究了不同核背景和不同孢质内源激素含量与玉米CMS的关系。结果表明 ,不同核背景以及不同孢质的CMS之间内源激素含量有差异 ;较高的ABA和较低GA、IAA含量、特别是较低的GA3 /ABA、IAA/ABA浓度可能是花粉发生败育的一个重要原因 ;不育系中较高的GA3

The content of endogenous hormone and different Cytoplasmic of CMS were studied in different nuclear background. The result shows: there are different content of endogenous hormone by different Cytoplasmic or in different nuclear background, lower content of GA and mid content of IAA and higher ABA are connected with higher degree of Male sterile; therefore, higher content GA/ABA and IAA/ABA might reduce male sterile.