镉对作物种子萌发、幼苗生长及氧化酶同工酶的影响

Effects of Cadmium on Seed Germination, Seedling Growth and Oxidase Isozymes in Crops.

本文研究了镉对四种作物的某些影响.玉米和西葫幼苗生长受镉抑制明显,根内POD同工酶谱带比对照减少.旱萝卜幼苗生长虽也受抑,但根内POD没有变化.沙窝青萝卜和西葫幼苗根内COD同工酶谱带也比对照减少,这似乎也与镉害有关.

This paper discusses the influence of Cadmium on seed germination, seedlings growth and oxidasp isozymes of four crops which have been exposed to Cd solution of various concentrations. Obvious inhibitory effects were identified in seedling growth of Zea mays and Cucttrbita pepo. Peroxidase (POD) isozyme bands in roots of treated Zea mays and Cucurbita pepo are less than those in control crops. Apparent correlation between inhibitive effects and changes of POD isozyme was observed. The changes could be taken as index for the resistance of the crops ro Cd damage. The cytochrome oxidise (COD) isozyme changes, may also relate to the harmful effects of Cd in Raphanus sativus (Shawo) and Cucurbits pepo.