夏蜡梅营养器官总鞣质含量的比较

对中国特有植物夏蜡梅营养器官的总鞣质含量进行测定,并分析了与环境因子之间的相关性。结果表明:(1)夏蜡梅各营养器官均含有总鞣质,但以叶片的含量最高,根次之,一年生枝、二年生枝、茎等器官的含量很低。(2)夏蜡梅叶片的含量阳坡植株显著高于阴坡,根的含量则反之。(3)夏蜡梅7个样地叶片的总鞣质含量在1.1066%～2.0060%之间,平均为1.6906%,其中临安5个样地含量较低,大雷山2个样地较高,差异显著。(4)通径分析显示,夏蜡梅叶片总鞣质含量的主要影响因子为土壤氮含量和C/N比。

Comparison of the total tannin in different organs of Calycanthus chinensis

Total tannin content in different organs of Calycanthus chinensis endemic to China was determined and its correlations with the environmental factors were analyzed.The results showed as follows.First,the total tannin distributed in all of the nutrient organs of C.chinensis.The content in the leaves was the highest,and that in the roots took the second place while that in the annual twigs,biennial twigs or stems were very low.Second,the total tannin content in the leaves of C.chinensis in sunny slope was higher than that of shady one with significant difference.Contrary content was observed in the roots of C.chinensis.Third,the total tannin content in the leaves of seven C.chinensis populations changed from 1.106 6% to 2.006 0%,with an average of 1.690 6%.That of five populations from Lin'an City was higher than that of two populations from Daleishan with significant difference.Fourth,the path analysis showed that the soil nitrogen and C/N had positive effect on the content of total tannin in the leaves of C.chinensis.