摘要
本文比较测定了对叶枯病具有高度抗性的侧柏单株叶片中木质素和纤维素含量、苯丙氨酸解氨酶（ＰＡＬ）和超氧化物歧化酶（ＳＯＤ）、以及细胞含水量和肉质化程度。结果表明，抗病单株叶片细胞中木质素和纤维素的含量显著地高于普通的感病侧柏；抗病单株的ＰＡＬ活性和ＳＯＤ活性也明显高于感病株。并且发现ＰＡＬ活性和木质素含量之间具有高度相关性。抗病单株的细胞含水量和肉质化程度则显著地低于感病株。综上指标说明，抗病单株在生理生化和遗传上，明显地区别于普通感病株。
The leaf blight of Platycladus orientalis caused by Chloroscypha platycladus was found a severe disease in Jiangsu Province recent years.Several diseaseresistant individuals were selected in heavily infected plantations.Biochemical substance concerned to diseaseresistance in selected resistant individual trees and common susceptible ones of Chinese arborvitae(P.orientalis) to leaf bilght was tested.It was found that lignin and cellulose content,phenylalanine ammonialyase (PAL) and superoxide dismutases (SOD) activities in the leaves of selected resistant individual trees were markedly higher than those of the common susceptible ones.It was also found that there was highly positive correlation between PAL activity and lignin content in leaves.Neverthless,water content and succelence in leaves of resistant trees were significantly lower than those of the susceptible ones.
出处
《林业科学研究》
CSCD
北大核心
1998年第3期295-298,共4页
Forest Research
基金
江苏省科委"八五"重点课题
关键词
侧柏
叶枯病
抗性单株
生化指标
抗病机制
leaf blight of Platycladus orientalis diseaseresistant individual biochemical markers resistant mechanisms
