中文摘要：

以巨峰、玫瑰香、龙眼和泽香4个葡萄品种一年生扦插苗为试材,研究了氯化镉（CdCl2）处理后葡萄根系线粒体过氧化氢（H2O2）、膜通透性转换孔（MPTP）、膜电位（Δψ）、细胞色素C（Cytc）及根系活力的变化.结果表明：4个葡萄品种经0.5mmol·L^-1的CdCl2处理后,根系线粒体H2O2含量上升,MPTP开放程度增大,Δψ降低,Cytc含量下降,根系活力明显降低;其中,H2O2含量和Cytc含量由高到低的顺序为：巨峰〉泽香〉玫瑰香〉龙眼,而根系活力、MPTP和Δψ由高到低的顺序为：龙眼〉玫瑰香〉泽香〉巨峰.表明巨峰葡萄根系活力比其他品种更易受到CdCl2的影响,而龙眼葡萄根系活力在4个品种中受CdCl2的影响最小.

英文摘要：

Taking the one-year cutting-seedlings of four grape cuhivars （ Kyoho, Muscat Hamburg, Long Yan, and Ze Xiang） as test materials, their root mitochondrial hydrogen peroxide （H2O2 ） content, membrane permeability transition pore （MPTP）, membrane potential （△ψ）, cytochrome C （ Cyt c） content, and root activity were measured under effects of CdC12. For all test grape cuhivars, the root mitochondrial H2O2 content and MPTP increased, but the △ψ, Cyt c content, and root activity decreased after treated with 0. 5 mmol CdCl2 ·L-1. The mitochondrial H2O2 content and Cyt c content were in the sequence of Kyoho 〉 Ze Xiang 〉 Muscat Hamburg 〉 Long Yan, while the root activity, MPTP, and △ψ were in adverse, i. e. , Long Yan〉 Muscat Hamburg 〉 Ze Xiang 〉 Kyoho. Among the test grape cultivars, the root activity of Kyoho was easier to be inhibited under Cd stress, while that of Long Yan was least affected by CdCl2.