Determination of physiological and biochemical changes caused by drought in some corn genotypes by drone technology

Drought is one of the stress factors affecting plant growth and development. In this thesis, physiological, biochemical and remote sensing technologies were researched under four different types of corn genotype and three different irrigation applications in the summer production season of 2019. Relative water content (BSI) decreased while protein and molondialdehyde (MDA) values increased with the increase of the effect of drought conditions. Although specific leaf area (SYA) and superoxide dismutase (SOD) activity tended to decrease with drought, different responses were found between varieties. The content of hydrogen peroxide (H2O2), on the other hand, varied in parallel with the increase in drought level, although it expresses different values in varieties. A linear relationship was determined between Normalized Difference Plant Index (NDVI) values and yield. When the average of all irrigation topics are taken, it is determined that the best yield is in the EKP-1 genotype, followed by EKP-3, EKP-2 and EKP-4 genotypes, respectively. When the drought performance of EKP-3 genotype is examined, it is determined that it is superior in terms of biomass compared to other genotypes. For the first time in this thesis, remote sensing technology data and biochemical and physiological parameters were associated. It was determined that there was a positive correlation between NDVI value and BSI and SOD and a negative relationship between protein and MDA parameters.