Genotypic variations of some nitrogen utilization parameters in winter wheat

Abstract

In a field trial with twenty Yugoslav winter wheat cultivars genotypic variations of some utili­zation parameters of nitrogen in a plant have been studied. The aim of this study was to indicate the possibilities of discovering features and processes in different cultivars of wheat based on simpler procedures in order to use it in hybridisation and units selection. The results show that the values of indicators of nitrogen utilization (harvest index of nitrogen, reutilization of nitrogen and physiological efficiency of nitrogen) vary according to the genetic specifity as well as the environ­ment conditions. Thus in the first year of investigation the harvest index of nitrogen varied in the range from 74% at cultivar Nevesinjka to 88% at cultivar Gruza, while in the second year the values ranged from 51% at cultivars Jarebica and Renesansa to 66% at cultivar Takovčanka. .

Keywords

• nitrogen
• utilization
• wheat
• cultivar