|Table of Contents|

Characteristics of Chlorophyll Fluorescence Parameters in Forsythia suspensa（Thunb.）Vahl Under NaCl Stress(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2016年07
Page:
55-60
Research Field:
Publishing date:

Info

Title:
Characteristics of Chlorophyll Fluorescence Parameters in Forsythia suspensa（Thunb.）Vahl Under NaCl Stress
Author(s):
WU Hao1; GAO Yong1; DU Mei’e2; DANG Xiaohong1; HOU Yadong3; XIN Jing4
(1.College of Ecology and Environmental Science，Inner Mongolia Agricultural University，Hohhot，Inner Mongolia 010010；2.Erdos Vocational College of Ecological Environment，Erdos，Inner Mongolia 017010；3.Inner Mongolia Institute of Forest Monitoring and Planning，Huhhot，Inner Mongolia 010020；4.Erdos Forestry International Cooperation Assistance Project Office，Erdos，Inner Mongolia 017000)
Keywords:
Forsythia suspensa（Thunb.）Vahl; NaCl stress; chlorophyll fluorescence parameters
PACS:
-
DOI:
10.11937/bfyy.201607016
Abstract:
With no damage of the leaf fluorescence diagnosis technology for the research of forsythia photosystem response under salinity stress，to provide reference for urban greening and water and soil conservation of forsythia in saline area of northern China.With 2 years of raw fructus forsythiae （Forsythia suspense(Thunb.)Vahl）cuttage seedlings as experimental material，adopted the method of greenhouse potting，used portable pulse modulation chlorophyll fluorescence spectrometer to determine each chlorophyll fluorescence induction kinetics parameters variation characteristics of forsythia blade under different quality concentration of NaCl stress (0.00%，0.20%，0.40% and 0.20%).The results showed that with the increase of salt stress，the maximum PSII photochemical efficiency (Fv/Fm)，the largest photochemical fluorescence quenching coefficient (qP) value in blades of forsythia appeared the tendency of decrease，and under severe stress，the difference between forsythia Fv/Fm，qP value and other among treatments were significant (P＜0.05)，from the beginning of the moderate salinity stress，the degree of reaction center of forsythia PSⅡ opening was reduced，the photosynthetic characteristics were significantly reduced；while Y(NPQ) of forsythia increased with the salinity stress intensifying，when the severe stress up to peak value，the ETR of forsythia blades in the process of salinity stress，which had no significant difference under mild and moderate stress between the CK (P>0.05)；Fv/Fm and ETR showed very significant positive correlation (P＜ 0.01)，ФPSⅡ and Y(NPQ) appeared significant negative correlation (P＜0.05)，and qP and qN had very significant negative correlation with ETR respectively，ETR and Y(NO) had significant negative correlation.In conclusion，it considered that leaf fluorescence technology could be widely used in salt-tolerant plants screening.

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Last Update: 2016-06-14