Abstract

The structure of the soil deteriorates with the changing world structure and increases the stress factors for plants. Water stress causes many morphological, physiological and biochemical changes in plants; however, it causes a decrease in photosynthesis and chlorophyll content. Drought stress affects the development of the organs of the plant such as stem, shoot and leaf area, and reduces the fresh and dry biomass of the leaves. It is important to determine malondialdehyde (MDA) value, which is an indicator of oxidative stress in plants exposed to abiotic stress, and the relationship of proteins with stress tolerance. In our study, 2 different varieties (Dağdaş and Doğankent) belonging to the Triticum aestivum L. species were used. By forming 4 different groups of this wheat (1st group; control – 2 nd group; flooding – 3 rd group; drought – 4 th group; salinity). At the end of the 12th day, the plants were harvested. Compared to the control group of both wheat varieties, it was observed that the development of stress factors adversely affected shoot length, shoot dry weight in groups under stress. With the effect of abiotic stresses, a decrease occurred in chlorophyll a, chlorophyll b and total chlorophyll levels; however, it was observed that chlorophyll values of Dağdaş varieties decreased more than Doğankent and this decrease was mostly at salinity stress. Additionally, MDA accumulation was mostly in drought group of Doğankent seedlings and salinity group of Dağdaş seedlings. As a result; It can be stated that Dağdaş variety is resistant to drought and salinity stress and Doğankent seedlings are more resistant to drought stress.