|Table of Contents|

Effects of Exogenous Ca2+ on Stomatal Traits and Gas Exchange Parameters of  Anthurium scherzerianum(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2017年08
Page:
80-85
Research Field:
Publishing date:

Info

Title:
Effects of Exogenous Ca2+ on Stomatal Traits and Gas Exchange Parameters of  Anthurium scherzerianum
Author(s):
LI Fei1ZHANG Hao2LIU Liang1GUO Lili1WANG Lishu1ZHENG Yunpu13
(1.School of Water Conservancy and Hydropower,Hebei University of Engineering,Handan,Hebei 056038;2.School of Life Science and Engineering,Handan University,Handan,Hebei 056005;3.Institute of Geographical Sciences and Natural Resources,Chinese Academy of Sciences/Key Laboratory of Ecosystem Network Observation and Modeling,Beijing 100101)
Keywords:
Ca2+photosynthesistranspiration ratestomatal conductancespatial distribution pattern
PACS:
-
DOI:
10.11937/bfyy.201708019
Abstract:
Leaves of Anthurium scherzerianum were used as materials.Stomatal density,stomatal anatomic structure (stomatal length,width,perimeter,area,shape index and area index),spatial distribution pattern,and leaf gas exchange of Anthurium scherzerianum were examined with changing the concentration of Ca(NO3)2 by 0 (CK),2,4,6,8 mmol?L-1 in the nutrition medium to study effects of exogenous Ca2+ on the stomatal traits and gas exchange parameters of Anthurium scherzerianum.The results showed that the stomatal perimeter reached its maximum and the stomata characterized the most prolate shape under the Ca2+ of 4 mmol?L-1.Meanwhile,the stomatal aperture width of 8 mmol?L-1 was significantly increased by 10% relative to that of CK.The leaves featured with the most of stomata per millimeter leaf area and the highly irregular spatial distribution pattern under the treatment of 6 mmol?L-1.However,the stomatal aperture area was not significantly changed by all the Ca2+ treatments(P<0.05).Moreover,the net photosynthetic rate(Pn) was gradually increased with the increase of Ca2+,whereas the Pn of CK was higher than those of four Ca2+ treatments,and no significant difference on Pn was found among the CK and the four Ca2+ treatments.In addition,we also found that Ca2+ barely affected the leaf leaf stomatal conductance(Gs) and transpiration rate (E) of Anthurium scherzerianum.These results suggested that Ca2+ had little impact on the stomatal traits and physiological processes might due mainly to the offset on the gas exchange from the positive effects by increasing stomatal density and the negative effects by declining the regularity of stomatal spatial distribution pattern.

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Last Update: 2017-05-05