The salicylic acid effect on the tomato (Lycopersicum esculentum Mill.) germination, growth and photosynthetic pigment under salinity stress (NaCl)
Автор: Zahra Shahba, Amin Baghizadeh, Mehdi Yosefi
Журнал: Журнал стресс-физиологии и биохимии @jspb
Статья в выпуске: 3 т.6, 2010 года.
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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 dont 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.
Salinity stress, salicylic acid, tomato, germination, growth, photosynthetic pigment
Короткий адрес: https://sciup.org/14323490
IDR: 14323490
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