论文部分内容阅读
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。
In this paper, lignin and cellulose content, phenylalanine ammonia lyase (PAL) and superoxide dismutase (SOD), and cell water content And the degree of meat quality. The results showed that the content of lignin and cellulose in the leaves of resistant plants was significantly higher than that of the common diseased Platycladus orientalis. The activities of PAL and SOD of the resistant plants were also significantly higher than those of susceptible plants. And found a high degree of correlation between PAL activity and lignin content. The water content and the degree of meat quality of the resistant plants were significantly lower than those of the susceptible plants. In summary, the index indicates that the resistant plants are obviously different in physiological, biochemical and genetic aspects from the common ones.