二球悬铃木展叶期叶片生长及3个生理指标的动态变化  

Dynamic changes of leaf growth and three physiological indexes of Platanus ×acerifolia during leaf expansion stage

作　　者：王沁峰[1] 张晓平[1] 王乐林[1] 张凡[1] 

机构地区：[1]安徽师范大学,安徽芜湖241000

出　　处：《植物资源与环境学报》2009年第2期94-96,共3页Journal of Plant Resources and Environment

基　　金：安徽省教育厅项目(2006KJ218B);安徽师范大学博士启动基金;重要生物资源保护与利用安徽省重点实验室基金资助项目

摘　　要：Dynamic changes of leaf growth and three physiological indexes of Platanus×acerifolia(Ait.) Willd.were studied in leaf expansion stage.The results show that in leaf expansion stage(April 4 to April 26),the weight and area of individual leaf increase gradually,and reach their peaks on April 26 and rise to 9.8 and 39.2 times of that in the initial stage,respectively.With the growth of P.×acerifolia leaf,the chlorophyll content has an increasing trend,and the increasing range is great.Protein content and POD activity appear a declining trend,and the declining range is great.All the three physiological indexes have some minor fluctuations.Contents of Chla,Chlb and Chl(a+b) are the highest on April 26 and rise to 3.41,5.91 and 4.00 times of that in the initial stage.Protein content and POD activity reach the lowest points on April 26 and April 16,respectively and decline by 73.42% and 94.41% of the initial stage of leaf expansion.Dynamic changes of leaf growth and three physiological indexes of Platanus x acerifolia （Ait.） Willd. were studied in leaf expansion stage. The results show that in leaf expansion stage （ April 4 to April 26）, the weight and area of individual leaf increase gradually, and reach their peaks on April 26 and rise to 9.8 and 39.2 times of that in the initial stage, respectively. With the growth of P. × acerifolia leaf, the chlorophyll content has an increasing trend, and the increasing range is great. Protein content and POD activity appear a declining trend, and the declining range is great. All the three physiological indexes have some minor fluctuations. Contents of Chla, Chlb and Chl （ a ＋ b） are the highest on April 26 and rise to 3.41, 5.91 and 4. 00 times of that in the initial stage. Protein content and POD activity reach the lowest points on April 26 and April 16, respectively and decline by 73.42% and 94.41% of the initial stage of leaf expansion.

关 键 词：二球悬铃木 展叶期 叶片生长 生理指标 动态变化 

分 类 号：Q945[生物学—植物学]