Abstract:
This study was conducted to
evaluate the salinity tolerance in seedling
stage of soybean (Glycine max L.). Factorial
experiment was done based on randomized
complete block design with three replicates.
17 soybean genotypes were used in three
salinity stress levels (consisting of control,
75 mM and 150 mM NaCl stress). The
experiment was carried out in a greenhouse
condition and proline, sodium, potassium,
and chlorophyll a, chlorophyll b, chlorophyll
a/b and total chlorophyll content were
examined. To create salinity stress, NaCl
was used in the experiment. The results
revealed that different salinity stress had
significant effects on all traits except for
chlorophyll b and chlorophyll a/b. The
cluster analysis in the control and at 75 and
150 mM salinity levels classified genotypes
into two, two and three groups respectively.
In each condition, the dpx and clean
genotypes were placed in a group which the
average traits were higher than the other
genotypes. This can be generalized to the
conditions of control as well as 75 and 150
mM salinity stress. Regression analysis
showed possible informative loci encoding
protein markers that was probable potential
for selection strategies for salt weather
proved by complementary tests.
