摘要
以长势一致的3年生七叶一枝花(Paris polyphylla)为试材,在不同遮阴(全光照、30%、60%和75%遮阴)处理下,测定了七叶一枝花净光合速率(Pn)、蒸腾速率(Tr)、胞间二氧化碳浓度(Ci)、气孔导度(Gs)、蛋白质(Pro)含量、叶绿素(Chl)含量、丙二醛(MDA)含量和可溶性糖(Sug)含量,研究了梵净山珍稀植物七叶一枝花不同遮阴环境下的光合特性和生理特性。结果表明:遮阴处理30d时,60%遮阴处理下七叶一枝花的净光合速率(Pn)、蒸腾速率(Tr)、气孔导度(Gs)、蛋白质(Pro)和叶绿素(Chl)含量最高,分别为5.82μmol·m-2·s-1、1.60mmol·m-2·s-1、0.14mol·m-2·s-1、19.25mg/g和3.72mg/g。综合分析表明,在对七叶一枝花人工种植和引种驯化时,可适当进行遮阴处理,且以60%遮阴为宜。
Taking Paris polyphylla as test material, the net photosynthetic rate (Pn), transpiration rate (Tr), intercellular COz coneentration(Ci), stomatal conductance(Gs), protein(Pro) content, chlorophyll (Chl) content, soluble sugar content and MDA content were determined under different conditions of shading treatments (Full sunlight, 30 %, 60 % and 75 shading) ,in order to investigate the photosynthetic and physiological characteristics of P. polyphylla. The results showed that Pn,Tr and Gs of P. polyphylla were 5. 82 μmol · m^-2 · s^-1 , 1.60 mmol · m^-2 · s^-1 , 0. 14 tool · m-^2 · s^-1 , respectively. Simultaneously,the contents of Pro and Chl were respectively 19. 25 mg/g, 3. 72 mg/g at maximum, under 60 % shading treatments for 30 days. The result indicated that during the period of artificial planting and introducing train of P. polyphylla,it was appropriated to take 60% shading treatment.
出处
《北方园艺》
CAS
北大核心
2015年第8期73-77,共5页
Northern Horticulture
基金
贵州省教育厅青年资助项目(黔教合KY(2013)205)
贵州省教育厅创新人才团队资助项目(黔教合KY(2012)08)
贵州省科技厅资助项目(黔教合J字LKT(2012)06号)
铜仁市科技局资助项目(铜市科研(2013)9-5号)
关键词
七叶一枝花
遮阴
光合特性
生理特性
Paris polyphylla
shade
photosynthetic characteristics
physiological characteristics