摘要
以东北4种蕨类植物——荚果蕨(Matteuccia struthiopteris(L.)Todaro)、猴腿蹄盖蕨(Athyrium multidentatum(Dol1.)Ching)、分株紫萁(Osmunda cinnamomea(L.)var.asiatica Fernald)和蕨(Pteridium aquilinum (L.) Kuhn var.latiusculum (Desy.) Underw.ex Heller)为研究材料,分析在35%、13%和8%全光照处理下4种蕨类植物的生长和光合特征.结果发现:随着遮荫程度的增加,4种蕨类植物的株高减小,比叶面积增加,叶片含水量增加.4种蕨类植物的净光合速率、气孔导度、蒸腾速率随着遮荫程度的增加而降低,胞间CO2浓度呈上升趋势.在3种遮荫处理下4种蕨类植物的PSⅡ最大光化学效率在0.7~0.8;非光化学猝灭系数随着遮荫程度的增加而降低.4种蕨类植物的叶绿素含量,尤其是叶绿素b含量随着遮荫程度的增加而上升,但在8%全光照下蕨的叶绿素含量呈下降趋势.相比其他蕨类植物而言,蕨具有较高的比叶面积、净光合速率和量子产率,相对较低的非光化学猝灭系数和叶绿素a./b.结果表明,4种蕨类植物最适合在35%全光照下生长,虽然对较低光照条件具有一定的适应性,但生长受到一定的抑制;4种蕨类植物中,蕨具有较强的耐荫性.本研究为东北地区4种可食用蕨类植物的栽培管理及利用提供科学依据.
The growth and photosynthetic characteristics of four edible fern species including Matteuccia struthiopteris (L.) Todaro, Athyrium multidentatum (Doll.) Ching, Osmunda cinnamomea (L.) var. asiatica Fernald, and Pteridium aquilinum (L.) Kuhn var. latiusculum (Desy.) Underw. ex Heller were examined under three shading conditions (35%, 13% and 8% of full sunlight). The results showed that plant height of the four species decreased, while specific leaf area (SLA) and leaf water content (LWC) increased with the enhanced shading degree. The net photosynthetic rate (Pn), stomatal conductance (Gs) and transpiration rate (Tr) of the four species decreased and the intercellular CO2 concentration (Ci) increased with the enhanced shading degree. The maximal photochemistry efficiency of PSⅡ(Fv/Fm) of the four species under the three shading treatments varied between 0.7 and 0.8. The non photochemical quenching coefficient (NPQ) decreased with enhanced shading degree. The chlorophyll (Chl) content, especially chlorophyll b content (Chl b) of the four species increased with the enhanced shading degree except for P. aqui linum var. latiusculum, which decreased at 8% of full sunlight. P. aquilinum var. latiusculum had higher SLA, Pn,ΦPSⅡ, but lower NPQ and Chl a/b compared with other species. In summary, the four fern species were suitable to grow under 35% of full sunlight. Although they had certain tolerance to lower light conditions, their growth was restrained to some extent, and P. aquilinum var. latiusculum had the maximum shade tolerance capacity among the four species. Our results provide scientific basis for the cultivation, management, and utilization of the four fern species.
作者
王艳林
高姗姗
何兴元
李岩
李佩洋
张粤
赵大伟
仲庆林
陈玮
WANG Yan-lin;GAO Shan-shan;HE Xing-yuan;LI Yan;LI Pei-yang;ZHANG Yue;ZHAO Da-wei;ZHONG Qing-lin;CHEN Wei(Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;University of Chinese Academy of Sciences, Beijing 101417, China;Key Laboratory of Forest Ecology and Management, Chinese Academy of Sciences, Shenyang 110016, China;Northeast Yucai Bilingual School, Shenyang 110164, China;Fushun Forestry Development Service Center, Fushun 113006, Liaoning, China)
出处
《生态学杂志》
CAS
CSCD
北大核心
2019年第8期2397-2404,共8页
Chinese Journal of Ecology
基金
国家重点研发计划东北森林区生态保护及生物资源开发利用技术及示范(2016YFC0500306)
中国科学院重点部署项目中国植物园联盟建设(KFJ-3W-No1)和中国科学院科技资源科普化能力建设项目(F16-191-5-00)资助
关键词
光照
蕨类植物
生长
光合作用
叶绿素荧光
light
fern species
growth
photosynthesis
chlorophyll fluorescence
