【摘要】 试验用不同浓度的镉处理小麦,研究了镉对小麦萌发期生长的膜指过氧化产物及某些生理特性的影响。随Cd²⁺浓度的增加,抑制小麦种子的发芽和幼苗地上部及根系的生长增强,使根系活力下降,细胞膜透性增大,膜脂过氧化产物丙二醛含量增加。表明Cd²⁺对小麦幼苗产生毒害,1μmCd²⁺时毒害作用不明显,100μmCd²⁺浓度与对照差异达显著水平。更多还原

【Abstract】 The effects of different density of cadmium(Cd2+)on wheat seed germination growth,lipid peroxidation production and physio-character were studied. As Cd2+ density increased,the suppression on germiuation of wheat seed and growth of aerial seeding and roots increased,roots activity depressed,cell mem-brance penetration and lipid peroxidation product malondialdehybe increased. It declare that Cd2+ could poison wheat seedling. The poison effect was not signfi-cant when the density of Cd2+ was lum. It reached signficant level to contrast on 100μm Cd2+.更多还原