Abstract: For announcing to chemical mechanismof male abortion on No21B/1R type wheat male sterile line. Com2pare to Ktype no. 1B/1R male sterile line KTSP3314A,homotypic maintainer line TSP3314B and 1B/1R male sterileline K3314A,homotypic maintainer line 3314B at different developmental stages of superoxide dismutase,catalase,peroxi2dase activity and variety of malondialdehyde content. Result showed that superoxide dismutase,catalase,peroxidase of ac2tivity and malondialdehyde content of Ktype no 1B/1R male sterile line were same as Ktype 1B/1R male sterile line inleaves and panicle,SOD activity go down and MDA content went up in later period,on the contrary, POD,CAT activitieswent up,showed chemical mechanismof male abortion of two type male sterile line was basic consistent,but male abortionof Ktype no21B/1R male sterile line was later than 1B/1R male sterile line,and male fertilityof Ktype wheat male ster2ile line were correlated to superoxide dismutase activity variety.

Key words: Wheat(triticum), Ae. kotschyi, No21B/ 1R, Male abortion, Free radical metabolism

CLC Number: 

• S512.1