اثرات تنش خشکی بر ساختار کورتکس در ریشه های بذری سه رقم گندم

Abstract
Most regions of the world are arid and semiarid. Soil moisture deficit is one of limiting factors of growth and
root task. Because the physical properties of roots depend on the internal structure, The aim of this study was
to test and evaluate the structure of the internal anatomy of wheat root and reduction of its diameter under
drought stress. In order to test a completely randomized design with six replicates on three wheat cultivars
Roshan were employed as tolerant to drought, Arg as semi tolerant and Shahpasand as sensitive. The
experiment was conducted in greenhouse of Shahid Bahonar University of kerman. soil moisture was
considered 55% of field capacity for stress conditions and 100% for control. Results showed that the effect of
stress on cortical thickness, area and perimeter of cortical cells were highly statistically significant.
Interaction effects of stress on the variety show significant differences in traits. The maximum thickness of
the cortex in control was for Roshan whereas in stress condition all varieties were in one group.
Abstract
Most regions of the world are arid and semiarid. Soil moisture deficit is one of limiting factors of growth and
root task. Because the physical properties of roots depend on the internal structure, The aim of this study was
to test and evaluate the structure of the internal anatomy of wheat root and reduction of its diameter under
drought stress. In order to test a completely randomized design with six replicates on three wheat cultivars
Roshan were employed as tolerant to drought, Arg as semi tolerant and Shahpasand as sensitive. The
experiment was conducted in greenhouse of Shahid Bahonar University of kerman. soil moisture was
considered 55% of field capacity for stress conditions and 100% for control. Results showed that the effect of
stress on cortical thickness, area and perimeter of cortical cells were highly statistically significant.
Interaction effects of stress on the variety show significant differences in traits. The maximum thickness of
the cortex in control was for Roshan whereas in stress condition all varieties were in one group.