芒属5种观赏草的耐荫性研究  

Study on shade tolerance of 5 Miscanthus ornamental grasses

作　　者：蔡建国[1,2] 任君霞[1] 姜朝阳 方佳[4] 何勇清[4] 郑炳松[4] 

机构地区：[1]浙江农林大学风景园林与建筑学院,浙江临安311300 [2]浙江农林大学植物园,浙江临安311300 [3]临安市昌化林场,浙江临安311300 [4]浙江农林大学亚热带森林培育省部共建国家重点实验室培育基地,浙江临安311300

出　　处：《福建林学院学报》2012年第3期246-251,共6页Journal of Fujian College of Forestry

基　　金：浙江省花卉创新团队项目(2009R0034-2);浙江省科技厅重大科技专项(优先主题)农业资助项目(2008C12019)

摘　　要：对芒属5种观赏草进行不同的遮荫处理,测定了株高、叶长和叶宽等形态指标和叶绿素总含量、叶绿素a、叶绿素b、叶绿素a/b、最大净光合速率(Pmax)、光饱和点(LSP)、光补偿点(LCP)和表观量子效率(AQY)等光合生理指标,并对其耐荫性的强弱进行了综合排序。结果表明:遮荫对芒属5种观赏草的形态指标和光合生理指标都有不同程度的影响,5种观赏草的耐荫性强弱顺序依次为晨光芒>芒>五节芒>花叶芒>细叶芒。To study the shade tolerance of Miscanthus,different shading treatments were imposed on the 5 Miscanthus ornamental grasses.The morphological and photosynthetic indexes including plant height,leaf length,leaf width,total chlorophyll content,chlorophyll a,chlorophyll b,chlorophyll a/b,maximum net photosynthetic rate（Pmax）,light saturation point（LSP）,light compensation point（LCP） and apparent quantum yield（AQY） were measured.The shade tolerance of these tested grasses were ranked.The results showed that shading treatments had effected on their morphological and physiological indexes to different extends.By using membership function to evaluate the shade tolerant ability,the order of the shade tolerance from strong to weak was M.sinensis ＇Morning Light＇,M.sinensis,M.floridulus,M.sinensis ＇Variegatus＇ and M.sinensis ＇Gracilimus＇.

关 键 词：芒属 耐荫性 形态指标 光合特性 

分 类 号：Q94[生物学—植物学]