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    GENOTYPE BY ENVIRONMENT INTERACTION AND GGE BIPLOT ANALYSES IN DURUM WHEAT UNDER WATERLOGGING STRESS
    (Pakistan Agricultural Scientists Forum, 2023) Tiryakioglu, M.; Akcali, C. T.; Sahin, C. B.; Karanlik, S.; Ergun, N.
    Waterlogging is one of the major limitations that reduce productivity in wheat all over the world. The present study aimed to identify waterlogging-tolerance in durum wheat genotypes. Thirty-two durum wheat genotypes were screened under aerobic and anaerobic conditions using randomized complete block design with three replications. High-purity nitrogen gas was used to provide and maintain waterlogging stress, while the control group was aerated with the air. Growth and physiological parameters i.e., shoot dry weight gain, root dry weight gain, total dry biomass weight gain, plant leaf area, dry leaf weight, specific leaf weight, chlorophyll content, carotenoid content, and their tolerance indices were determined. Durum wheat seedlings grown under anaerobic conditions had significantly lower shoot dry weight, total dry biomass weight, specific leaf weight, chlorophyll a, and chlorophyll a + b content. Results further revealed that the tolerance indices varied depending on wheat cultivars for the investigated parameters. Harran 95 under aerobic condition and Eminbey under anaerobic condition had the highest tolerance indices for shoot dry weight gain and total dry biomass weight gain. However, Kiziltan 91 had the highest tolerance indices for root dry weight gain under these two conditions. For these reasons, Kiziltan 91 came to forefront position with its stability and could be used in durum wheat breeding. For identifying the correlation of tolerance index with seed yield and potential genotypes to be used as a selection criterion, further studies are needed under field conditions.
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    Öğe
    Increased Temperature and Shortened Grain Filling Duration Due to Sowing Dates Significantly Affect Fatty Acids Composition of Corn (Zea mays L. indentata Sturt.)
    (Tarbiat Modares Univ, 2022) Akcali, C. T.
    Due to global climate change, environmental conditions change and cause alteration on the factors that affect the plants during their growth and development. For this reason, it becomes important to determine the reactions of plants, which are evaluated in different ways in many areas and are a large source of raw materials, to these changing conditions. One of these plants is corn (Zea mays L. indentata Sturt.), which is used extensively in both human and animal nutrition. Therefore, besides the starch and protein content and quality of corn grain, oil content and the composition of fatty acids are important. This study was conducted to determine the effect of temperature parameters and grain filling duration, which varies depending on sowing dates, on the fatty acid composition of corn. Field experiments were conducted in the growing season of 2019 and 2020 in Hatay/Turkey ecological conditions. The experiment was designed as split plot on randomized complete block design with three replications. Three varieties of corn were cultivated in four sowing dates. The content of fatty acids was determined by chromatographic method. Variance analysis revealed that fatty acid composition was significantly affected by sowing dates and crop variety. It was determined that total fatty acid content decreased due to the increasing temperature by the delay in sowing dates.