|Table of Contents|

Effect of High Temperature Stress on Photosynthetic Physiological Indexes and Chlorophyll Fluorescence Characteristics of Salvia miltiorrhiza Bga(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2016年06
Page:
142-147
Research Field:
Publishing date:

Info

Title:
Effect of High Temperature Stress on Photosynthetic Physiological Indexes and Chlorophyll Fluorescence Characteristics of Salvia miltiorrhiza Bga
Author(s):
SUN Yunfei1; 2; CHAO Jianguo1; GU Wei1; LI Mengyang1; HOU Haoran1; ZHAO Jun3
(1.College of Pharmacy，Nanjing University of Chinese Medicine，Nanjing,Jiangsu 210023；2.Jiangsu Province Hospital of Chinese Medicine，Nanjing,Jiangsu 210019；3.Guizhou Xinbang Pharmaceutical Co.Ltd.，Guiyang,Guizhou 550002)
Keywords:
Salvia miltiorrhiza Bga; high temperature stress; physiological characteristics; photosynthesis characteristies; chlorophyll fluorescence
PACS:
-
DOI:
10.11937/bfyy.201606036
Abstract:
In order to explore the effect of high temperature stress on the physiological indexes，photosynthesis parameters and chlorophyll fluorescence parameters of Salvia miltiorrhiza Bga，the physiological characteristics in Salvia miltiorrhiza Bga with the soil pot experiments were measured and analyzed under high temperature stress before first flowering.The results showed that the activities of superoxide dismutase (SOD) showed a rising trend with the increasing stress time，while the activities of catalase (CAT) decreased.The malondialdehyde (MDA)，proline (Pro) content showed a rising trend，and the relationship between them and stress time was significant multiple nonlinearity.The net photosynthetic rate (Pn)，stomatal conductance (Gs)，transpiration rate (Tr) and stomatal limitation (Ls) decreased and all of them were negatively correlated with stress time.The maximum photochemical efficiency of PSⅡ (Fv/Fm)，potential photochemical efficiency (Fv/Fo)，actual photochemical efficiency of PSⅡ(Fv′/Fm′)，photochemical quenching coefficient (qP) and electron transport rate (ETR) of them decreased with rising high temperature stress time，and all of them were negatively correlated with stress time.The non-photochemical quenching coefficient (NPQ) was firstly increased and then decreased.All the analysis showed that the high temperature stress was an important adversity factor in the physiological indexes，photosynthesis parameters and chlorophyll fluorescence parameters of Salvia miltiorrhiza Bga，and the interaction of the physiological characteristics reduced the damage of the high temperature stress.

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Last Update: 2016-05-05