Journal of Stress Physiology & Biochemistry, Vol. 6 No. 3
2010, pp. 4-16 ISSN 1997-0838
Original Text Copyright (cc) 2010 by Shahba, Baghizadeh, and Yosefi
ORIGINAL
ARTICLE
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QueryDate : 2016-12-24
Cites : 22
The salicylic acid effect on the tomato (Lycopersicum esculentum Mill.)
germination, growth and photosynthetic pigment under salinity stress
(NaCl)
Shahba Zahra1,2 , Baghizadeh Amin2, Yosefi Mehdi1
1Payame noor Najafabad
University, Najafabad-Isfahan, Iran. 2International Center for Science, High Technology and
Environmental Sciences, Kerman, Iran. *Email- amin_4156@yahoo.com
Received April 17, 2010
Soil salinity is a serious environmental problem that has
negative effect on plant growth, production and photosynthesis. Fresh
and dry plant weights decreases with salinity treatments. The very
important role of salicylic acid (SA) in response to different stress
and modification and decline damages due to stresses has established in
different studies. In this research tomato seeds planted in pots
containing perlite in a growth chamber under controlled conditions of
27±2°C and 23±2°C temperature , 16h lightness and 8h darkness
respectively, 15 Klux light intensity and 75% humidity; NaCl
concentration of 0, 25, 50, 75 and 100 mM and salicylic acid
concentration of 0, 0.5, 1 and 1.5 mM were used in the form of
factorial experiment in a complete randomized design (CRD). Results
show that germination was decreased with salinity increasing. At low
levels of salinity, SA leads to decrease in germination and had no
effect in high levels of salinity. The length of shoot were not
effected by salinity but decrease with increase in SA concentration.
Low salinity concentrations led to significant increase in root length
and high concentrations don’t have significant difference with control.
SA also had no effect on it. The highest amount of a, b, c and total
chlorophyll and carotenoid was show in 50 mM salinity levels.
