闽楠家系苗期光合特性的研究  

Study on photosynthetic characteristics of different families of Phoebe bournei at seedling stage

作　　者：盛杰[1] 陈月华[1] 吴际友[2] 程勇[2] 刘球[2] 黄明军[2] 

机构地区：[1]中南林业科技大学风景园林学院,湖南长沙410004 [2]湖南省林业科学院,湖南长沙410004

出　　处：《中南林业科技大学学报》2015年第6期45-49,共5页Journal of Central South University of Forestry & Technology

基　　金：湖南省林业科研项目"珍贵用材树种种质资源收集与良种选育"(2010-07);湖南省林业科技计划项目"闽楠;红椿家具用材良种选育与应用"(XLK201406)

摘　　要：研究了闽楠不同家系苗期光合特性,为闽楠家系选择与园林应用提供了理论依据。以闽楠4个家系2年生幼苗为试验材料,研究了家系间光合特性。研究结果表明,闽楠家系表观量子效率EAQY高,最大净光合速率低,对弱光利用能力强。净光合速率日变化呈"双峰"曲线,蒸腾速率日变化呈"单峰"曲线。综合各参数分析,闽楠家系幼苗具有一定的耐荫性,育苗时选择阴湿的地方更适宜苗木生长,对CO2利用的范围较广,本试验家系中8号家系表现最佳。By taking the two-year-old Phoebe bournei young seedlings from different four families as the tested materials, the differences of photosynthetic characteristics and ecological benefits between the families were investigated. The results indicate that the EAQY of P bournei was high, while Amax was low, the ability to use low light was strong; The daily variation of net photosynthetic rate was a twin peaks curve, and the daily variation of transpiration rate was a single-peak curve. By taking into account for the parameters, P. bournei families have some shade tolerance, so it＇s beneficial to choose the shady and damp place for the seedlings growth. In the selecting test of families, the 8th species has the best performance.

关 键 词：闽楠 家系 苗期光合特性 

分 类 号：S792.24[农业科学—林木遗传育种]