文献类型：期刊文献

中文题名：观赏狼尾草光合特性的研究

英文题名：STUDY ON THE PHOTOSYNTHETIC CHARACTERISTICS OF THE Pennisetum alopecuroides L.SPRENG

作者：巨关升[1] 武菊英[2] 赵军锋[3] 孙振元[1]

第一作者：巨关升

机构：[1]中国林业科学研究院林业研究所/国家林业局林木培育重点实验室;[2]北京草业与环境发展研究中心;[3]河南科技学院

年份：2005

卷号：19

期号：6

起止页码：451-455

中文期刊名：核农学报

外文期刊名：Acta Agriculturae Nucleatae Sinica

收录：CSTPCD;;北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

基金：国家林业局"948"项目"葛藤等攀缘植物新品种及其绿化芜藻技术引进"

语种：中文

中文关键词：狼尾草;光合特性;蒸腾速率;表观量子效率;羧化效率

外文关键词：Pennisetum Alopecuroides L. Spreng; photosynthetic characteristic ; transpiration rate; apparent quantum efficiency; carboxylation efficiency

分类号：S511;Q945.11

摘要：用Li-6400便携式光合分析仪测定了观赏狼尾草(Pennisetum alopecuroides L.Spreng)的光合特性。试验结果显示:狼尾草的光合日进程呈“单峰型”,无“午休”现象,最大净光合速率为21.8μmol CO2m-2s-1,出现在13:00。狼尾草的光饱和点为1200μmolm-2s-1,光补偿点为15μmolm-2s-1,表观量子效率为0.05743;CO2饱和点为600μmolmol-1,补偿点在5μmolmol-1左右,羧化效率CE=0.2349。所有数据表明该狼尾草具有典型的C4植物的特性。
The photosynthetic characteristics of Pennisetum alopecuroides L. Spreng selected for ornamental culture were measured with the Licor-6400 portable photosynthesis system. The results showed that daily variation of net photosynthetic rate in leaves presented a single peak curve, no midday depression. The peak value of the net photosynthetic rate was 21.8μmol CO2m^-2s^-1 occurred at 13：00 Light saturation point was 1200μmolm^-2s^-1 light compensation point was 15μmolm^-2s^-1, and apparent quantum efficiency was 0.05743. CO2 saturation point was 600μmolmol^-1, and CO2 compensation point was about 5μmolmol^-1, and carboxylation efficiency was 0.2349. All the data of showed that P. alopecuroides owed photosynthetic characteristics of a typical C4 plant.