Comprasion in terms of drought tolerance of bread wheat genotypes

The study was organized in 3 different ways. In laboratory conditions, the study was conducted in 5 different drought environments (0.00 MPa, 0.25 MPa, 0.50 MPa, 0.75 MPa and 1.00 MPa applications) created with 43 genotypes of PEG6000, with 5 replications according to the Random Plots Trial Design. In the study, plant weight, root number, root length, root weight, shoot length and shoot weight characters were determined. A specially prepared tube experiment was carried out with 24 Bread wheat genotypes. Forty three genotypes, including 39 bread wheat, 1 rye, 1 kavlıca and 2 einkorn populations, and 24 genotypes were selected by utilizing the results obtained in the drought study conducted with PEG under laboratory conditions. In the study, plant height, spike length, number of spikelets per spike, number of grains per spike, grain weight per spike, root length, root weight properties were investigated. The specially prepared tube study was carried out according to the Random Blocks Trial Design with 4 replications. In crate experment as a third study, 45 genotypes were planted in 1 meter long rows in crates with a length of 10 meters and a width of 1.2 meters. In the study, for the early drought tolerance of the genotypes; Seedling survival rate, seedling growth, vegetation temperature, chlorophyll ratio, stomatal width, length and height characteristics were investigated. As a result of the analysis of variance and significance test performed on the examined traits, it was observed that there was a statistically significant change between genotypes and genotypes in terms of PEG applications, drought level applications and seedling survival rates Enola, NKÜ Ergene, Bezostoja 1 and Maden were the best genotypes in terms of drought tolerance in the studies carried out with 43 genotypes under laboratory conditions, followed by Aglika, Falado, Anopa, Selimiye, Bora and Hakan. The lowest values in terms of drought tolerance were obtained in Siyez-1, Siyez-2 and Kavlıca genotypes. Enola and NKÜ Ergene were at the top in terms of drought tolerance properties, which were examined in the study conducted in a specially prepared tube medium, followed by Rumeli, Prima, Esperia and Bora genotypes. The lowest values in specially prepared tube medium were obtained in Kavlıca Beyaz, LG59, Adelaide and Rebelde genotypes. Esperia, Rumeli, Krasunia Odes'ka, Almeria and Falado genotypes showed better results in terms of seedling survival rate in the box environment, while Adelaide, LG59, Siyez-1 and Siyez-2, President and Anopa gave low values. When all the characters examined in the safe environment are evaluated together; Enola, Mihelca, Maden, Hamza and Aglika genotypes were found to be better in terms of drought, while Adelaide, President, Spelta Beyaz, Siyez-1 and Aldane gave low values.