Breeding contribution to quality improvement and nitrogen utilization in wheat

• Main Authors: Hristov, N., Institut za ratarstvo i povrtarstvo, Novi Sad (Serbia), Mladenov, N., Institut za ratarstvo i povrtarstvo, Novi Sad (Serbia), Đurić, V., Institut za ratarstvo i povrtarstvo, Novi Sad (Serbia), Kondić-Špika, A., Institut za ratarstvo i povrtarstvo, Novi Sad (Serbia), Jocković, B., Institut za ratarstvo i povrtarstvo, Novi Sad (Serbia)
• Format: Conference Proceeding
• Language: English; Serbian
• Published: Beograd (Serbia) Društvo selekcionara i semenara Republike Srbije 2010
• Subjects: ABONOS NITROGENADOS; APPLICATION RATES; CONTENIDO DE NITRAGENO; CULTIVOS DE INVIERNO; CULTURE D'HIVER; DOSE D'APPLICATION; DOSIS DE APLICACIAN; ENGRAIS AZOTA; http://www.fao.org/aos/agrovoc#c_16113; http://www.fao.org/aos/agrovoc#c_24917; http://www.fao.org/aos/agrovoc#c_49909; http://www.fao.org/aos/agrovoc#c_5193; http://www.fao.org/aos/agrovoc#c_5195; http://www.fao.org/aos/agrovoc#c_5197; http://www.fao.org/aos/agrovoc#c_8157; MATABOLISME DE L'AZOTE; METABOLISMO DEL NITRAGENO; NITROGEN CONTENT; NITROGEN FERTILIZERS; NITROGEN METABOLISM; SERBIA; SERBIE; TENEUR EN AZOTE; VARIATA; VARIEDADES; VARIETIES; WINTER CROPS
• ISBN: 8690193758; 9788690193752

The objective of the study was to examine changes with time in two bread-making quality parameters (protein content - PC and bread loaf volume - LV) using a set of 6 winter wheat cultivars (Banatka, Bezostaya 1, Sava, Balkan, Pobeda, Simonida), from different breeding periods. These cultivars were evaluated in a 4-yr study (2005-2008). Two levels of agronomic inputs were applied: low nitrogen (N45) and conventional nitrogen (N110), representing the standard agronomic condition. Changes in bread-making quality of cultivars were analyzed by linear regression. Protein content at low N rate was from 11.8%, to 14.4%, while at high N rate was from 13.5% to 14,8%. The average rate of decrease in PC per year of release was 0.02%/year. The relative annual decrease in PC of wheat cultivars over 50 years was 0.21%. The mean value of LV at low N rate was ranged from 1050 ml to 1340 ml, while at high N rate was from 1105 to 1415 ml. The average rate of increase in LV per year of release was 3.96 ml/year. The relative annual genetic gains in LV of wheat cultivars over 50 years were 0.31%. Newer cultivars, selected at intensive agricultural practice expressed higher positive reactions at increased N nutrition.