Volume 6, Issue 19 (vol.6,no. 19, Year 2017 2018)                   j.plant proc. func. 2018, 6(19): 247-254 | Back to browse issues page

XML Persian Abstract Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Ranjbar-Fordoei A. Application of chlorophyll fluorescence indices to evaluatephotosynthetic apparatus function in Pistacia khinjuk under simultaneous salinity and drought stresses. j.plant proc. func.. 2018; 6 (19) :247-254
URL: http://jispp.iut.ac.ir/article-1-362-en.html
University of Kashan , aranjbar@kashanu.ac.ir
Abstract:   (2095 Views)

High temperature, high irradiance, low water vapour pressure, and lack of precipitation in most months characterize arid ecosystems. Under these conditions, trees such as pistachio suffer drought combined with salinity stress. In order to study the simultaneous effects of salinity and drought stresses on photosynthetic apparatus function in P. khinjuk, seedlings of the species were exposed to osmotic stress induced by a combination of salt and poly ethylene glycol (Ctrl (without any treatment), low osmotic stress (LOS), moderate osmotic stress (MOS) and high osmotic stress (HOS). Chlorophyll fluorescence yields were measured / calculated for the following parameters: F0, Fm, Fv, Fʹm, Fʹ0, Fʹm, Fʹv, Fs, F0 /Fm, Fv/ Fm, Fv/F0, Fʹv /Fʹm, &PhiPSII, ETR and Photoinhib-PSII%. A one way ANOWA showed that all the mentioned parameters were differently reacted to osmotic stress treatments without any visible symptoms of foliar phytotoxicity. The highest decrements or functional alterations in fluorescence parameters (in frame of defense mechanism or inactivation of photosynthetic apparatus) were observed at HOS.

Full-Text [PDF 490 kb]   (1802 Downloads)    
Type of Study: Research | Subject: Drougth Stress
Received: 2014/12/27 | Accepted: 2016/02/8 | Published: 2017/03/12

Add your comments about this article : Your username or Email:
CAPTCHA

Send email to the article author


© 2021 All Rights Reserved | Journal of Plant Process and Function

Designed & Developed by : Yektaweb