白叶枯病原菌侵染引起水稻多酚氧化酶活性变化的遗传分析  

GENETIC ANALYSIS OF CHANGES IN THE POLYPHENOLOXIDASE ACTIVITY INFECTED BY BACTERIAL BLIGHT IN RICE

作　　者：张尤凯[1] 周桂元[2] 王润华[2] 

机构地区：[1]华南师范大学生物系,广州510631 [2]华南农业大学农学系,广州510642

出　　处：《华南师范大学学报（自然科学版）》1997年第3期87-91,共5页Journal of South China Normal University(Natural Science Edition)

摘　　要：研究结果表明 ,水稻感染白叶枯病后 ,多酚氧化酶活性增加 ,与病斑长度成极显著负相关 ,遗传相关系数r =- 0 .82 5 ,并且与环境的关系也很密切 .水稻感染白叶枯病后 ,至少有 4对多酚氧化酶基因被活化 ,基因效应属负向趋显性 .非固定遗传的显性及上位性成分在遗传型中占有很高的比重 ( 85.2 % ) .Genetic analysis was made of change in the polyphenoloxidase activity of leaves of rice infected by bacterial blight ( Xanthamonas campestris pv.orgzae ).The result showed that the polyphenoloxidase activity of leaves infected by bacterial blight was higher than that before infection.The mean length of lesion was significantly related to the changes in polyphenoloxidase activity.The inheritancc coefficient of cottelation was-0.825.It was also closely reated to the environment condition.The changes in polyphenoloxidase activity was controlled at least by four pairs of genes with negative transgressive dominant effection.It was notable that component of dominant variance and epistase varianee made up very high percentage (85.2%) within genetic variance.

关 键 词：水稻 白叶枯 多酚氧化酶 酶活性 遗传效应 

分 类 号：S435.111.4[农业科学—农业昆虫与害虫防治]