Effects of shade treatments on net photosynthetic characteristics and chlorophyll fluorescence parameters of Cercis canadensis ‘Forest Pansy’ | 遮光对紫叶加拿大紫荆光合速率及叶绿素荧光参数的影响
2009
Zhang Yi, Northeast Forestry University, Harbin(China), College of Landscape and Architecture | Zhuo Lihuan, Northeast Forestry University, Harbin(China), College of Landscape and Architecture | Wang Chengzhong, Northeast Forestry University, Harbin(China), College of Landscape and Architecture
Chinese. 研究了遮光30%、60%、80%和全光照处理（CK）对紫叶加拿大紫荆（Cercis canadensis‘Forest Pansy’）叶面积、叶片色素含量、净光合速率以及叶绿素荧光参数的影响。结果表明：随着遮光度增加,叶片色素含量增加,叶绿素a/b减小;叶片净光合速率（Pn）、蒸腾速率（Tr）下降,Pn、Tr日变化均呈单峰曲线;叶绿素荧光参数Fv/Fm和Fv/Fo随着遮光程度的增加而降低。说明紫叶加拿大紫荆有一定的耐荫性。[著者文摘]
Show more [+] Less [-]English. Pigment content,net photosynthetic rate（Pn）,transpiration rate（Tr） and chlorophyll fluorescence of leaves in Cercis canadensis＇Forest Pansy＇ were studied to investigate the effect of different shading treatments（CK,30%,60% and 80%）on ＇Forest Pansy＇ seeding.With the increasing of sun-shading,the pigment content increased,whereas leaf net photosynthetic rate（Pn）,transpiration rate（Tr） and the chlorophyll fluorescence parameters（Fv/Fm and Fv/Fo） decreased.Both diurnal variation curve of net photosynthetic rate and transpiration rate had one peak.These findings indicate that ＇Forest Pansy＇ has certain shade tolerance.
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