Nutritive effect of protein composition and other grain properties of doubled haploid wheat lines with/without translocation 1B/1R in a model feeding test
2008
Dvoracek, V.,Vyzkumny Ustav Rostlinne Vyroby, Prague (Czech Republic) | Kodes, A.,Ceska Zemedelska Univ., Prague (Czech Republic). Katedra Mikrobiologie, Vyzivy a Dietetiky | Stehno, Z.,Vyzkumny Ustav Rostlinne Vyroby, Prague (Czech Republic) | Hucko, B.,Ceska Zemedelska Univ., Prague (Czech Republic). Katedra Mikrobiologie, Vyzivy a Dietetiky | Mudrik, Z.,Ceska Zemedelska Univ., Prague (Czech Republic). Katedra Mikrobiologie, Vyzivy a Dietetiky
Our study was aimed at a general effect of 1B/1R translocation in common wheat as well as at the impact of selected chemical and technological characteristics of winter wheat grain on the growth of laboratory rats in model feeding tests. A model set of 18 DH lines with/without 1B/1R translocation was used in the study. There was a highly significant effect of year on grain characteristics. Wheat lines with the presence of 1B/1R translocation showed significantly higher values of relative viscosity, crude protein content and higher proportion of the albumin + globulin fraction. This was manifested negatively in the technological characteristics of the gluten index and the Zeleny sedimentation test of these wheat lines. Relative viscosity, grain hardness and albumin-globulin fraction were significantly influenced by the genotype. The relationships between grain characteristics and the results of feeding test were not unequivocal. The presence of 1B/1R translocation significantly decreased the values of net protein utilization and biological value of proteins. Correlation analyses showed low mutual relationships among the indicators of balance and growth tests. A lower but significant positive correlation of the albumin + globulin fraction and a negative correlation of storage proteins with protein efficiency ratio were also observed. Individual relation between albumins + globulins and gluten protein composition influenced the values of protein efficiency ratio more significantly than the presence of 1B/1R translocation.
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