WANG Di.Effect of Powdery Mildew on Biochemical and Physiological Indexes of Different Varieties of Melon Seedlings[J].Northern Horticulture,2013,37(09):148-151.
白粉病菌对不同品种甜瓜幼苗生理生化指标的影响
- Title:
- Effect of Powdery Mildew on Biochemical and Physiological Indexes of Different Varieties of Melon Seedlings
- 文章编号:
- 1001-0009(2013)09-0148-04
- 分类号:
- S 652
- 文献标志码:
- A
- 摘要:
- 以甜瓜品种“DQ122”（感白粉病）和“DQ21”（抗白粉病）为试材，研究了2个甜瓜品种苗期受白粉病侵染后超氧化物歧化酶（SOD）、过氧化氢酶（CAT）、过氧化物酶（POD）、多酚氧化酶（PPO）、丙二醛（MDA）含量和电解质渗透率等多个生理生化指标的变化。结果表明：受白粉病菌侵染后，抗病品种“DQ21”能使细胞内SOD酶活性、CAT酶活性和MDA含量基本恢复到正常水平，其自我调节恢复到正常状态的能力显著大于感病品种“DQ122”；感病品种的POD活性要强于抗病品种；抗病品种比感病品种具有保持较高PPO酶活性的能力；感病品种的电解质渗透率明显高于抗病品种。
- Abstract:
- Taking two melon cultivars ‘DQ122’ (Susceptible) and ‘DQ21’ (Resistance) as materials，the changes of physiological and biochemical indexes including SOD，CAT，POD，PPO，MDA content and electrolytic permeability of two melon seedlings infected by the powdery mildew were studied.The results showed that the resistant cultivar ‘DQ21’ made SOD activity，CAT activity and MDA content returned to normal levels in basically，and its capacities of self-regulating and returning to normal status were significantly greater than the susceptible ‘DQ122’.The susceptible cultivar maintained higher activity of POD than the resistant cultivar；the resistant cultivar maintained higher activity of PPO than the susceptible cultivar.The susceptible cultivar maintained higher electrolytic permeability than the resistant cultivar.
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备注/Memo
作者简介：王迪（1981-），男，硕士，助理研究员，现主要从事甜瓜育种及栽培技术等研究工作。E-mail:wd110110@sina.com.