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摘要: 为了解不同种源铁皮石斛Dendrobium officinale的光合特性,采用Li-6400光合测定系统对5个铁皮石斛(浙江庆元、浙江天台、浙江武义、云南广南、云南麻栗坡)种源光合速率及光强响应曲线进行了测定分析。结果表明:铁皮石斛净光合速率、光补偿点、光饱和点均较低,不同种源间存在一定的差异(P<0.05)。铁皮石斛的光合特性表现出阴生植物的特性,对光照的需求不强,在设施栽培过程中要控制光照强度,促进铁皮石斛优质、低碳、高效生产。图6表1参8Abstract: To real photosynthetic characteristics variation of Dendrobium officinale from different provenances to provide reference for producing quality,low-carbon,and efficient D. officinale,photosynthetic rate and light intensity response curve of D. officinale provenances from Qingyuan,Tiantai,and Wuyi in Zhejiang Province,as well as Guangnan and Malipo in Yunnan Province were studied. Diurnal variation for the photosynthetic rate and light response curves for net photosynthesis to photosynthetic photon flux densities (PPFD) were measured using an Li-6400 photosynthetic determination system. Results showed that the net photosynthetic rate,the light saturation point,and the light compensation point in leaves of D. officinale were low with some differences (P<0.05) among the five provenances. Thus,during cultivation,light intensity must be controlled to ensure quality,low-carbon,and efficient production of D. officinale.[Ch,6 fig. 1 tab. 8 ref.]
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链接本文:
https://zlxb.zafu.edu.cn/article/doi/10.11833/j.issn.2095-0756.2013.03.009

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