西南林业大学学报2017，Vol.37Issue(4)：22-27,6.DOI:10.11929/j.issn.2095-1914.2017.04.004
红花深山含笑光合速率日变化及其与环境因子的关系
Relationship Between Diurnal Changes of Michelia maudiae var. rubicunda Photosynthetic Rate and Environmental Factors
摘要
Abstract
This study intended to provide some groundwork for the cultivating of M. maudiae var. rubicunda by studying the diurnal change of photosynthesis under different situation. Net photosynthetic rate (Pn), transpiration rate ( Tr ) , stomatal uctance ( Gs ) , concentration of CO2 between cells ( Ci ) , photosynthetic active radiation ( PAR) , relative humidity ( RH) and atmospheric concentration of CO2 ( Ca ) were tested and compared by Li-6400 portable photosynthesis system from August to September in 2016. The results indicated that M. maudiae var. rubicunda′s diurnal change of photosynthesis emerged diauxie curve with an obvious midday depression. Tr, Ci and Gs had largest influence on M. maudiae var. rubicunda′s diurnal change of photosynthesis while PAR, RH, Ca had the influence of secondary. The depression of Photosynthetic rate in August and September were mainly caused by Non-stomatal limitation. According to the study in contrast of August and September, hot weather had side effect on the photosynthesis of M. maudiae var. rubicunda, restraining the growth. In that case, the cultivating of M. maudiae var. rubicunda should be done in cool weather.关键词
光合速率/环境因子/红花深山含笑/相关分析Key words
photosynthetic rate/environmental factor/Michelia maudiae var. rubicunda/correlation analysis分类
农业科技引用本文复制引用
郎校安,杨蕾蕾,崔铁成,张寿洲,戚建华..红花深山含笑光合速率日变化及其与环境因子的关系[J].西南林业大学学报,2017,37(4):22-27,6.基金项目
国家林业局林业公益性行业科研专项项目 (201504322) 资助. （201504322）
