首页 | 本学科首页   官方微博 | 高级检索  
     检索      

25种南亚热带植物耐阴性的初步研究
引用本文:曾小平,赵平,蔡锡安,饶兴权,刘惠,马玲,李长洪.25种南亚热带植物耐阴性的初步研究[J].北京林业大学学报,2006,28(4):88-95.
作者姓名:曾小平  赵平  蔡锡安  饶兴权  刘惠  马玲  李长洪
作者单位:1.东北林业大学林木遗传育种黑龙江省重点实验室
基金项目:国家自然科学基金 , 国家自然科学基金 , 广东省自然科学基金 , 中国科学院基金 , 中国科学院华南植物园知识创新基金
摘    要:该文研究了南亚热带不同生活型植物的耐阴性,为城市绿化植物选择配置提供实验依据.选取25种南亚热带植物的盆栽幼苗作为试验材料,其种类包括目前正在推广的园林植物和采自森林的灌木和地被植物,用LI-6200光合作用测定系统等仪器测定各种植物叶片的形态特征、光合作用和光合-光响应曲线,包括叶片厚度(LT)、叶面积(LA)、比叶面积(SLA)、含水量(LWC)、叶绿素含量(Chl)、叶绿素a/b值(Chl a/b)、光合速率(Pn)、暗呼吸速率(Rd)、光补偿点(LCP)、光饱和点(LSP)和表观量子效率(Φ)等生理指标,并对测定结果进行方差分析、相关分析和聚类分析,比较分析植物的耐阴程度.结果表明,25种植物可分为3类: 第1类为耐阴性较强的硬枝老鸭嘴、百两金、野芋、桢桐、板蓝根、狮子尾、红背桂、虾脊兰、宫粉郁金和黑骨蕨等10种,第2类为耐阴性中等的石柑子、大花鸳鸯茉莉、北江砂仁、崖爬藤、合果芋和华南胡椒等6种,第3类为耐阴性相对较弱的可爱花、鸡爪兰、咖啡、扇蕨、棕叶九尾草、草果、千年健、大叶仙茅和虎舌红等9种.Pn与Chl a/b值和Rd呈显著的正相关,与Chlb呈显著的负相关;LCP与LSP呈显著正相关;Chl b与Chl a和Chl a+b呈极其显著正相关,与Chl a/b呈显著负相关;SLA与LA呈显著正相关,与LWC呈极其显著正相关. 

关 键 词:园林植物    光合速率    叶绿素含量    比叶面积    耐阴性
文章编号:1000-1522(2006)04-0088-08
收稿时间:01 25 2005 12:00AM
修稿时间:2005-01-25

Shade-tolerance of 25 low subtropical plants
ZENG Xiao-ping,ZHAO Ping,CAI Xi-an,RAO Xing-quan,LIU Hui,MA Ling,LI Chang-hong.Shade-tolerance of 25 low subtropical plants[J].Journal of Beijing Forestry University,2006,28(4):88-95.
Authors:ZENG Xiao-ping  ZHAO Ping  CAI Xi-an  RAO Xing-quan  LIU Hui  MA Ling  LI Chang-hong
Institution:1. South China Botanical Garden, Chinese Academy of Sciences, Guangzhou,510650, P. R. China; 2 Graduate University of Chinese Academy of Sciences, Beijing, 100049, P. R. China; 3 .Gardens Management Office of Foshan, Guangdong, 528000, P. R. China.
Abstract:In this paper the authors presented a comparative study on shade tolerance of low subtropical plants of different life forms, to provide experimental data in the selection for urban greenery. And the authors chose seedlings of 25 species, consisting of garden and understory plants from local forests and low subtropical areas in order to determine morphological characteristics of leaves and photosynthesis as well as photosynthetic light response curves using a LI 6200 portable photosynthetic system. The following measurements were made: physiological indices of leaf thickness (LT), leaf area (LA), specific leaf area (SLA), water content (LWC), chlorophyll content (Chl), chlorophyll a/b ratio (Chl a/b), photosynthetic rate (Pn), dark respiration rate (Rd), light compensation point (LCP), light saturation point (LSP) and apparent quantum yield (Φ). The measured data were analyzed for correlation and a cluster analysis was applied. Results showed that all 25 plant species could be classified into three groups of shade tolerance by hierarchical cluster analysis: 1) tenplants of strongly shade tolerant: Thunbergia erecta, Ardisia crenata, Colocasia antiquorum, Clerodendrum japonicum, Baphicacanthus cusia, Rhaphidophora hongkongensist, Excoecaria cochinchinensis, Calanthe discolor, Curcuma kwangsiensis and Adiantum flabellulatum; 2) six plants are intermediate in shade tolerance: Pothos chinensis, Brunfelsia calycina, Amomum villosum, Tetrastigma obtectum, Syngonium podophyllum and Piper austrosinense; 3) nine plants havelow shade tolerance: Eranthemum austrosinensis, Chloranthus spicatus, Coffea arabica, Neocheiropteris palmatopedata, Setaria palmifolia, Amomum tsao ko, Homalomena occulta, Curculigo capitulate and Ardisia mamillata. There was a significant positive correlation between Pn and Chl a/b ratioas well as Rd, and a significant negative correlation between Pn and Chl b; the positive correlation between LCP and LSP was also significant; the positive correlation of Chl b and Chl a as well as Chl a+b was extremely significant, but there was a significant negative correlation between Chl b and Chl a/b ratio; the positive correlation of SLA and LA was significant and the negative correlation between SLA and LWC was extreme significant.
Keywords:garden plants  photosynthetic rate  chlorophyll content  specific leaf area  shade-tolerance
本文献已被 CNKI 维普 万方数据 等数据库收录!
点击此处可从《北京林业大学学报》浏览原始摘要信息
点击此处可从《北京林业大学学报》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号