|Table of Contents|

Shade-tolerance of Five Ferns From South China

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2018年06
Page:
88-95
Research Field:
Publishing date:

Info

Title:
Shade-tolerance of Five Ferns From South China
Author(s):
SHEN Yanhui; CAI Jingru; LIU Jianhua; XU Jianxin
(Shenzhen Techand Ecology & Environment Co.Ltd.,Shenzhen,Guangdong 518040)
Keywords:
ferns; shade-tolerance; phenotypic plasticity index; shade-tolerant threshold
PACS:
-
DOI:
10.11937/bfyy.20173114
Abstract:
The shade-tolerance of Cyclosorus parasiticus,Blechnum orientale,Pteris vittata,Pteris linearis and Macrothelypteris torresiana in south China were researched.Indexes of growth and physiological were measured under four kinds of different light invironments (100%,25.00%,6.25%,1.56%),including height,crown diameter,leaf number,chlorophyll contents and photosynthetic parameters.The results showed that as shadow treatment strengthened,the crown diameter of M.torresiana and P.vittata narrowed down as well as the quantity of leaf.The SPAD of C.parasiticus and P.linearis increased at first then decreased as euphotic index diminished.Meanwhile the others increased gradually.All the light compensation point of five ferns decreased firstly and then increased.The light compensation point of P.linearis reached the lowest under 6.25% light environment,while C.parasiticus touched the bottom under 1.56% light environment,and the others reached the lowest under 25.00% light environment.The Pmax changed a lot.P.vittata reached the highest point at about 8.33 μmol?m-2?s-1,.followed by B.orientale at about 7.85 μmol?m-2?s-1,the others were blower 5.50 μmol?m-2?s-1.Phenotypic plasticity index(PPI) and shade-tolerant threshold(STT) were used for shade-tolerance evaluation,and a comprehensive evaluation on shade-endurance abilities of five ferns was given according to membership function method.P.linearis and M.torresiana had good shade-endurance,C.parasiticus took the second place,B.orientale and P.vittata were the lowest,and the shade-endurance abilities of five ferns were ranked as M.torresiana>P.linearis>C.parasiticus>B.orientale>P.vittata.

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Last Update: 2018-03-30