Dry bean is the third most important pulse crop which is widely adapted and can improve soil fertility in Türkiye. The genetic variability and association studies help in selection which would increase the yield potential of dry bean. The F2 generation and parents (Kınalı, Alberto, Great, Göynük, Özmen) obtained by diallel hybrid method (5 x 5 and 20 combinations were obtained) were sown in the experimental field of Selçuk University Faculty of Agriculture in 2021.In the research, measurement, counting, weighing and analysis of plant height, pod height, number of seeds per plant, number of seeds per pod, seed yield per plant, hundred-seed weight, protein ratio, protein yield in the plant were made. In the F2 generation, the seed yield values in plant of the hybrids are between 23.63 g/plant (Kınalı x Özmen) and 97.45 g/plant (Alberto x Kinalı). Heterosis values of seed yield in plant range from -50.72% (Kınalı x Özmen) to 93.01% (Kınalı x Göynük), heterobeltiosis values varies from -58.92% (Kınalı x Özmen) to 77.26% (Göynuk x Özmen). The protein ratio of the crosses in the F2 generation ranged from 23.05% (Alberto x G Northern 59) to 29.12% (Özmen x Alberto). Heterosis values of protein ratio are between -18.33% (Alberto x G Northern 59) and 7.23% (Özmen x Alberto), heterobeltiosis values are between -22.27% (Alberto x G Northern 59) and 5.82% (Özmen x Alberto). As a result of this research, a sufficient level of genetic variation was determined in the population, considering the agronomic characteristics examined. Determination of suitable parents and hybrids for green bean breeding in terms of sustainability of calcareous soils, agronomic characteristics and inheritance of these parents and hybrids were determined.
This research was conducted in three replications according to the ''Two Factor Factorial Experiment in Random Plots'' design and Selcuk University, Faculty of Agriculture, Department of Field Crops, in a fully controlled research greenhouse and laboratories in 2015. Pea genotypes resistant to cold stress were determined, and biochemical, physical properties or physical defense mechanisms created by plants against cold stress were sought. According to the results of the research, if cold harm was examined, Melrose, Sahin, Granger, 4053 x Melrose, 4053 x Hadim, Sahin x Hadim and 3057 x Melrose; if peroxidase content was examined 3057 x Melrose, 4053 x Melrose, 3029 x Melrose, 3029 x Granger and 4053 x Hadim, when superoxidase content was examined, 3053 x Melrose, Sahin x Hadim, 4053 x Melrose, Sahin x Melrose and 3029 x Melrose and when proline content examined 3031 x Granger, 3055 x Melrose, Ultrillo, 3057 x Hadim and Sahin x Hadim the genotypes were first. As a result, when the effects of cold stress on the enzyme activities in the leaves of pea genotypes are considered, the most durable genotypes are 3031 x Granger and 3055 x Melrose. These come forward as genotypes that can be used in subsequent studies to breed for cold resistance.
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