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银杏叶片三种酶活性变化与抗疫霉菌关系的研究
林敏敏;廖咏梅;周志权;   
1.广西大学农学院;2.广西产品质量监督检验院 南宁530005;3.南宁530005;4.南宁530022
摘要:
将疫霉菌离体接种于银杏叶片,发现不同龄期银杏叶片对疫霉菌的抗病性有差异,叶龄为100d的抗病性较强,叶龄为20d的抗病性较弱。不同银杏品种叶片对疫霉菌的抗性也有差异,潮田1号和大佛手2号较抗病,大佛手1号和桂G86-1较感病。不同龄期叶片接种后,其过氧化物酶(POD)和苯丙氨酸解氨酶(PAL)的酶活性变化与抗病性成正相关,而多酚氧化酶(PPOD)的酶活性变化与抗病性没有相关性;不同银杏品种叶片接种后,品种间的抗病性与PPOD酶活性变化成正相关,而POD和PAL的酶活性变化与品种间的抗病性没有相关性。可见,POD、PPOD和PAL的酶活性变化没有明显规律性,不能作为衡量银杏叶片抗病性的生化指标。
关键词:  银杏    疫霉菌    抗病性    酶活性
DOI:
分类号:
Fund project:广西自然科学基金(桂科自9811016)~~
  
Abstract:
Key words:  
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