热带亚热带植物学报2018，Vol.26Issue(2)：141-149,9.DOI:10.11926/jtsb.3745
遮荫对高山羊齿光合生理特性的影响
Effect of Shading on Photosynthetic Physiological Characteristics of Davallia mariesii
摘要
Abstract
In order to reveal the light response mechanism of Davallia mariesii, the growth, photosynthetic characters and chlorophyll fluorescence parameters were measured under five shading treatments, including 0, 25%, 50%, 70% and 90% shading. The results showed that the leaf type became large and leaf color deepened with the increment of shading.Under 70% shading,the growth vigor of D.mariesii was good with hard glossy leaves, low sporulation rate, and spore maturation delay. The contents of chlorophyll a, chlorophyll b and Chlorophyll a+b increased with increment of shading, but decreased under 90% shading, the chlorophyll a/b, the changes in light saturation point, light compensation point and dark respiration rate were opposite, there was significant difference in light saturation point between deep shading and nature light. Among five shading levels, the chlorophyll fluorescence parameters, such as Fm, φPo, ψO, φEo, TRO/RC, ABS/RC, and ETO/RC, reached up to the maximum under 70% shading. Therefore,D.mariesii had the smallest light inhibition, the largest light energy utilization, and the strongest photosynthetic capacity under 70% shading, so that it was helpful for the growth of D.mariesii.关键词
高山羊齿/遮荫/光合特性/叶绿素荧光Key words
Davallia mariesii/Shade/Photosynthetic characteristics/Chlorophyll fluorescence引用本文复制引用
何雪娇,余智城,郑少缘,林金水,林智明..遮荫对高山羊齿光合生理特性的影响[J].热带亚热带植物学报,2018,26(2):141-149,9.基金项目
福建省属公益类科研院所基本科研专项(2012GY04)资助This work was supported by Special Fund for Research Institutes of Public Service in Fujian (Grant No. 2012GY04). （2012GY04）
