Browsing by Author "Elis, Seval"

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Changes in Quality Components of Durum Wheat Genotypes Under Temperature Stress and Sufficient Rainfall Conditions During the Growth Period
(Publ House Bulgarian Acad Sci, 2024) Elis, Seval; Yildirim, Mehmet
A combination of genetic makeup and environmental factors determine the quality characteristics of durum wheat. Specifically, environmental stressors, such as extreme temperature fluctuations, can have a substantial impact on the productivity and quality of wheat crops. The effect of terminal temperature stress on yield and quality in durum wheat genotypes grown during 2019 and 2020 seasons was studied. These characteristics include thousand kernel weight, protein content, hectoliter weight, wet gluten content, Zeleny sedimentation value, and grain colour. The first year of the study was warmer than the second, resulting in decreased kernel weight, hectoliter weight, and gluten values, as well as increased protein content and Zeleny sedimentation values. This indicates that temperature stress leads to a higher protein content. The study also showed considerable variation in quality traits among genotypes, with certain genotypes demonstrating greater stability in specific quality traits. Genotype by environment interaction significantly affected grain weight, protein content, gluten content and Zeleny sedimentation. These data indicate that temperature stress plays an important role in determining the quality characteristics of durum wheat. Future studies should focus on mitigating the adverse effects of terminal temperature stress and improving the generation of genotypes with optimal quality traits.
Impact of Heat Stress on Yield Potential of Durum Wheat Genotypes
(Pakistan Agricultural Scientists Forum, 2024) Elis, Seval
Heat stress during plant growing cycle is a critical factor affecting wheat production. The primary objective of this research is to assess the impact of heat stress on key agronomic traits of durum wheat, including grain yield, heading and ground cover ratio. The study was conducted over two consecutive cropping seasons (2019 and 2020) under rain-fed conditions. Twenty durum wheat lines and varieties were used as the research materials. The genotypes experienced significant heat stress from vegatative to reproductive period. Heat stress during plant growth is critical for wheat grain yield and quality but heat stress effects vary between genotypes depending on their stress tolerance level. The study demonstrated the potential of NDVI as a reliable indicator that can be used to evaluate the crop yield performance under temperature stress conditions. This supported by strong relationships between grain yield and NDVI. The association of estimated maximum ground cover (EMC) with earliness indicates that early soil surface closure is related to rapid growth rate. According to ground cover estimations, early ground cover and fast plant growth were related to earliness and plant height, respectively. This study reveals significance of identifying and selecting durum wheat genotypes with good stability under heat stress, aiming to development of heat-tolerant varieties and ensuring more stable wheat production.