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Changes in
micronutrients, dry weight and plant growth of soybean (Glycine
max L. Merrill) cultivars under salt stress
Murat Tunçturk1*, Ruveyde Tunçturk1
and Fikret Yasar2
1Yüzüncü
Yıl University, Faculty of Agriculture, Department of Field
Crops, 65080, Van, Turkey.
2Yüzüncü
Yıl University, Faculty of Agriculture,
Department of Horticulture,
65080,
Van, Turkey.
*Corresponding author.
E-mail:
murattuncturk@hotmail.com.
Tel: +90432-2251848. Fax: +904322157510.
Accepted
24 April, 2008 |
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This
study was carried out to determine the effects of salt
stress on the growth, dry weights and micronutrient contents
of soybean cultivars grown in
green house conditions.
Twelve
soybean cultivars (Omaha, A-3127, Mancon, Stresland,
LN-89-3264, NE-3297, Ap-2292, Althow, Irigious, S-4520,
Amsoy-71 and Cisne) were exposed to salinity treatments (150
mM NaCl and Control). Shoot, leaf and root dry weights of
all cultivars at 45-day-old plants were determined.
Micronutrient contents (Fe, Mn, Cu and Zn) of leaves, stems
and roots were also analyzed.
Salinity stress negatively affected soybean cultivars
and the extent of effects varied depending on the salt
tolerance of the cultivars. Generally, salinity reduced the
plant growth and dry weights. Fe, Mn, Cu and Zn
concentrations were higher in roots compared with those in
leaves and shoots in salt applied samples. It was determined
that, micronutrient contents showed some variation in
different organs of soybean cultivars as a result of salt
application to growing environment. Iron (Fe), manganese (Mn)
and copper (Cu) content increased in the samples with salt
applications except in some cultivars. On the other hand,
when mean data of cultivars were considered, zinc (Zn)
content was not significantly affected by salt stress.
Key words:
Soybean, Glycine max (L), salt stress, dry weight,
micronutrient accumulation. |
