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Abstract
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Generaly, stresses affects various aspects of plant growth and also they causes reduction in
rate of development, growth organs, and reduction in the growth period of plant and eventually
they will decline dry matter production. This experiment was counducted in 2016 to study the
effects of salinity on some morphological characteristics tomato plant, varieties Lian at the
greenhouse of College of Agriculture and Natural Resources Borazjan (Bushehr) in a completely
randomized design with four replications. The treatments include salinity of NaCl at 4 levels 0, 25,
50, 75 mM. The results showed that salt stress has significant effect on morphologic traits of tomato
including root length, shoot length, stem diameter, shoot fresh weight, root fresh weight, root dry
weight, fresh weight of shoot to root and only had no significant effect on shoot dry weight. The
highest values for root length (41.33 cm) and shoot fresh weight (466.96 g) was observed at salinity
level 50 mM. For shoot length (76.56 cm) and root fresh weight (56.58 g) was in the level of control
and also for root dry weight (7.52 g), fresh weight of shoot to root (27.72), stem diameter (9.51 mm)
was observed at salinity level 75 mM. The minimum value for root length (32.89 cm), shoot length
(65.11 cm), fresh weight of shoot to root (7.66) in the salinity level of 75 mm and the minimum value
for root dry weight (3.56 g), weight root (16.068 g), shoot fresh weight (366.53 g), stem diameter
(7.45 mm) were observed in control.
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