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    Utilization potential of Glutograph in wheat breeding programs and the influence of genotype and environment on bread wheat quality
    (Wiley, 2020) Evlice, Asuman Kaplan; Pehlivan, Aliye; Sanal, Turgay; Salantur, Ayten; Kilic, Gokhan; Dugan, Gulcin; Boyaci, Ismail H.; Köksel, Hamit
    Background and objectives Glutograph is a relatively new instrument to determine the stretch (GS) and relaxation (GR) properties of wheat gluten. The aims of this research were to determine heritability values of GS and GR and to investigate the effects of genotype and environment on some quality parameters and yield. The relationship between Glutograph parameters and other traits was also investigated by using correlation and biplot analyses. Findings Wide ranges of variability values were observed among both genotypes and environments for Glutograph parameters and other investigated characteristics. Genotype was found to be the most significant source of variation (69%), and high heritability values (0.95) were calculated for Glutograph parameters. Glutograph parameters had strong relationships with gluten index (GI) and Alveograph deformation energy (W) based on correlation and biplot analyses. Biplot analysis performed on 24 genotypes and nineteen traits demonstrated that especially eight genotypes had similar responses for GS, GI, grain protein content, Alveograph elasticity index, W, and Zeleny sedimentation values. Conclusion Glutograph could be a beneficial quick screening test especially in early stages of breeding programs for improving the baking quality of wheat. Significance and novelty The high heritability values indicate that Glutograph has a great potential for evaluation of gluten quality, especially in breeding programs.