期刊论文

Study on Photosynthetic Characteristics of Four Varieties of Alnus formosana under Simulated Light Condition

中文

中国农学通报

1000-6850

2009

25

12

75-78

基金项目：国家科技部科技支撑计划“林木优质种苗快繁技术研究与示范推广”（2008BADB7B03） 国家林业局重点项目“桤木纸浆材优良无性系选育与示范”（2006-26）

本校为第一机构

采用Licor-6400便携式光合作用测定系统,对T31、T52、T53、T59四个无性系光合特性进行研究,结果表明:(1)4个无性系有较中等的LCP(介于37～68 μmol/(m2·s)之间)和较高的LSP(>800 μmol/),其中LSP、LCP的大小排序分别为T59>T31>T53>T52,T53>T52>T31>T59.T59、T31强光利用效率及弱光利用效率都较强,与其生长特性相一致;(2)表观量子效率为0.0298～43.0495 mol/mol,与自然条件下一般植物的表观量子效率(0.03～0.05 mol/mol)基本一致;(3)影响台湾桤木无性系净光合速率的主要生理生态因子为Ci,PAR、Tr、Gs的影响次之,PAR对Pn起主要调节作用.

In order to explore the response to light of different varieties of Alnus formosana to provide theoretical basis for breeding and extending theirs cultivation area, the photosynthetic characteristics of four varieties, namely, T31, T52,T53 and T59 were studied in this paper. The results showed as follows： （1）four varieties had rather lower light compensation point （LCP）（37-68 μmol/（m^2·s）） and rather higher light saturation point （LSP）（〉800 μmol/（m^2·s））, and the two indexes＇ order wereT59〉T31〉T53〉T52,T53〉T52〉T31〉T59,...