Study on Physiological Characteristics of Potassium Accumulation in Wheat Grains at Filling Stage
Gao Xiaokai
Yu Feiyan
Li Peng
Zhang Lianhe
Abstract：Using wheat variety Soissons as material,the characteristics of potassium (K) accumulation in wheat grains and K concentration correlation among grains,flag leaf blades,flag leaf sheaths,internodes,nodes,spike-stalks and glumes were explored in the study.The results showed that the K concentration in grains gradually decreased with the extension of filling time.At the 16th day of filling time,the grain K accumulation rate reached the highest and the total K accumulation in grains was close to the maximum value.The K concentrations in flag leaf blades,flag leaf sheaths,internodes,spike-stalks and glumes increased firstly and then showed a trend of decrease.Correlation analysis showed that K concentration in grains existed negative correlations with that in flag leaf sheaths,nodes,internodes and spike-stalks,but positive correlations with glumes and flag leaf blades.The results indicated that the K in grains mainly came from absorption and transport from roots rather than reutilization of K in the flag leaves.
Keywords：WheatDifferent organsPotassium accumulationDynamic changesCorrelation
Publication Date：2017-09-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：4( 42-45 )