华南农业大学学报2016，Vol.37Issue(4)：57-62,6.DOI:10.7671/j.issn.1001-411X.2016.04.010
刨花润楠不同种源光响应曲线分析
Photosynthetic light response of different Machilus pauhoi provenances
摘要
Abstract
[Objective] To study the characteristics of photosynthetic light response of Machilus pauhoi, investigate the differences in photosynthesis among different M. pauhoi provenances, and provide the the-oretical basis for selective breeding and afforestation of M. pauhoi. [Method] Seeds of six M. pauhoi provenances with widespread potential in Guangdong were collected from Jianou of Fujian Province ( MJO) , Shunchang of Fujian Province ( MSC ) , Lechang of Guangdong Province ( YLC ) , Renhua of Guangdong Province ( YRH) , Lingchuan of Guangxi Province ( GLC) and Gongcheng of Guangxi Prov-ince ( GGC) . The photosynthetic light response curves of the seedlings were recorded, and light response parameters including maximum net photosynthesis rate (Pnmax), light compensation point(LCP), light saturation point( LSP) , apparent quantum yield ( AQY) , and dark respiration rate ( Rd ) were calculat-ed.[Result] GGC provenance had the highest Pnmax(12. 20 μmol·m-2·s-1), and the largest differ-ence between LSP and LCP (604. 60 μmol·m-2·s-1). MJO provenance had the lowest Pnmax(5. 32 μmol·m-2 ·s-1 ) . MSC provenance had the smallest difference between LSP and LCP.[Conclusion]A-mong six provenances, GGC has the best capability of using low light and strong light and have the high-est adaptability to light, therefore this provenance has relatively high photosynthetic potential and growth potential. Close planting or mixed planting may be feasible in the afforestation of M. pauhoi.关键词
刨花润楠/种源/光响应曲线/光响应特征参数Key words
Machilus pauhoi/provenance/light response curve/light response parameter分类
农业科技引用本文复制引用
周鹏,林玮,朱芹,周祥斌,吴林瑛,李萧芹,陈晓阳..刨花润楠不同种源光响应曲线分析[J].华南农业大学学报,2016,37(4):57-62,6.基金项目
“十二五”国家科技支撑项目(2012BAD01B04) （2012BAD01B04）
广东省林业科技创新项目(2011KJCX002) （2011KJCX002）
