Yazar "Bayhan, M." seçeneğine göre listele

Listeleniyor 1 - 2 / 2
  • Küçük Resim
    Öğe
    Effect of drought on morphological and physiological development of bread wheat (Triticum aestivum l.) genotypes at pre and post heading period
    (Corvinus Univ Budapest, 2021) Albayrak, Ö.; Bayhan, M.; Özkan, R.; Akıncı, C.; Yıldırım, M.
    The goal of the study was to determine the effect of drought on the bread wheat genotypes at pre-and post-heading stage. This research was conducted for two years in 2017-2018 and 2018-2019 wheat growing season at Dicle University Faculty of Agriculture Research and Application Field in Diyarbakir, Turkey. Two check varieties (Empire and Pehlivan) and 8 CIMMYT bread wheat lines were used as materials in the study. Significant differences in all features such as heading stage, chlorophyll content (SPAD), normalized difference vegatation index (NDVI), leaf area index (LAI), plant height, grain weight and grain yield between the genotypes were identified. Based on the results of the correlation analysis performed over the two-year average data; grain yield was found to be correlated with an increase of all the characteristics studied during the pre-heading period when drought stress were encountered. In terms of grain yield, late varieties are resistant to stress that occurs prior to heading, while early varieties have become advantageous after heading. According to the results of the study, ideal genotypes with high yield and stability are expected to have moderate heading stage in environments where precipitation fluctuates from year to year due to climate change.
  • [ X ]
    Öğe
    EXPRESSION OF NITROGEN TRANSPORTER GENES IN WHEAT LEAVES ( Triticum aestivum L.) AND FIELD PERFORMANCES UNDER ORGANIC CONDITIONS
    (Pakistan Agricultural Scientists Forum, 2024) Bayhan, M.; Ozkan, R.; Yildirim, M.; Inal, B.
    This study aimed to investigate the expression patterns of nitrogen transporter genes in wheat (Triticum aestivum L.) grown in organic farming systems. Expression profiling of these genes will provide valuable insights into the molecular mechanisms involved in nitrogen uptake and transport in wheat plants. In addition, the agronomic responses of the wheat genotypes were evaluated under organic conditions. This will help in the creation of genotypes that support effective nitrogen use in organic farming systems. The study showed that the nitrate transporter gene family member TaNRT2.1 exhibited the highest expression level. The Alada cultivar performed well in terms of yield under field conditions and showed the highest expression levels of TaNRT2.1, NRT2.1, and TaGS1. The 6DZT-03-01 genotype had the highest expression levels of NPF6.3 and AMT2.1. Alada, YE-4, and YE-31 were identified as the most suitable genotypes for organic farming. Several genes, including TaNRT2.1, were more highly expressed in the high-yielding genotype, Alada, than in the other genotypes. This suggested that nitrate and ammonium transporters play an important role in determining how different genotypes of wheat take in nitrogen. Further research is needed to understand the complex mechanisms that contribute to genotypic variation in nitrogen uptake in wheat. To fully understand the genetic basis of nitrogen uptake in wheat and to develop ways to improve nutrient management in organic farming systems, the expression levels of other genes involved in nitrogen metabolism should also be examined.