卫星搭载处理对辣椒萌发过程中抗氧化酶活性的影响

测定经卫星搭载后的辣椒种子萌发过程中抗氧化酶的活性。结果表明:辣椒种子经卫星搭载处理后,其发芽势和发芽率分别比对照提高了3.5%和5.3%;在萌发过程中,可溶性蛋白质MDA含量低于地面对照,但SOD活性高于对照;卫星搭载的种子在萌发13d的幼苗体内SOD、G-POD、APX和CAT活性分别较对照提高了14.29%、25.23%、1.84%和21.52%。表明卫星搭载处理提高了辣椒种子和幼苗体内抗氧化酶活性,对萌发初期保护膜系统的修复具有重要的意义。

EFFECTS OF BOARDING RETURN SATELLITE ON ANTIOXIDANT ENZYME ACTIVITIES DURING GERMINATION OF HOT PEPPER SEED

The effect of boarding return satellite on antioxidant enzyme activities during germination of hot pepper seed was studied. The results showed that the germination potentiality and germination rate of hot pepper seed after boarding return satellite were increased by 3.5 % and 5.3 %, respectively. During seed germination, soluble protein and MDA contents decreased, however, the SOD activities increased. SOD activity of treated seeds was higher than that of the control especially during the initial period of germination, while the content of soluble and MDA contents were much lower than those of control. The activities of SOD, G-POD, APX and CAT in 13d seedlings of treated seeds were increased by 14.29% ,25.23% ,1.84% and 21.52%, respectively. It was concluded that space flight enhanced antioxidant enzyme activities of seeds and seedlings, which were very important to prevent membrane lipid superoxide.