The effects of fungicides on grain water and dry matter contents during maturation of winter wheat

摘要

Two field experiments were carried out comparing a range of fungicide treatments. Medial and apical grains were repeatedly extracted from 10 ears per plot during grain maturation. Grain dry weight and moisture content were determined, modelled using a'broken stick' method and parameters of the models compared. Fungicide increased final grain weight and duration of grain filling. In medial grains maximum water content during the linear phase of grain filling with dry matter was highly correlated with maximum grain weight (g dm), whereas, in apical grains maximum grain weight was correlated with water content at the end of grain filling with dry matter.