绞股蓝生态生理特性的研究  

Study on the Ecological and Physiological Characters of Gynostemma pentaphyllum

作　　者：周霞 何和明 郑觉[1,2,3] 

机构地区：[1]海南省海洋学校 [2]海南师范学院 [3]海南省东方师范学校

出　　处：《中国野生植物资源》1999年第2期1-4,共4页Chinese Wild Plant Resources

摘　　要：本研究结果表明，绞股蓝生理特性因生境不同、部位不同而异。植株含水量以枝、叶＞根；叶绿素总含量是野生的＞引种的；光合日变化呈双峰曲线变化，总是趋向是全天光合强度１６９０９２ｕｍｏｌＣＯ２／ｍ２·ｓ，全日照、荫蔽下的净光合速率上午峰值高于下午３６２倍；呼吸强度为根＞茎＞叶；过氧化物酶活性变化以叶＞茎＞叶柄＞卷须＞根为序。he results of this study showed that the physiological characters vary with the environment and the position. The branch and leaf contain more water than root, and wild variety contains more chlorophyll than introduced one. The diural rate of photosynthesis was double peaks curve and the diural photosynthesis intensity was about 169.092 umol CO 2/m 2·S.The net photosynthetic rate of the morning was 3 62 % to the afternoon under the fall light and shaded condition.The intensity of breathe was root > stem > leaf.The perocidase activity changing tendency was leaf > stem > handle > curlybeard > root.

关 键 词：绞股蓝 含水量 呼吸强度 生态 生理光合作用 

分 类 号：S567.239[农业科学—中草药栽培]