Study on Screening Conditions of High Potassium Efficient Genotypes in Banana Seedling Stage

Effects of different potassium levels on relative biomass in banana seedling stage were studied by sand culture.The optimal screening conditions(stage and potassium level)were discussed.The results showed that the 0.025 mmol·L-1-K+ and 2.50 mmol·L-1+K+ concentration of the medium were the suitable potassium levels in nine-leave stage of the plant.The results showed that there were significant differences in seedling dry weight,potassium efficiency and genotypes of banana growth potential but not in root/shoot ratio under different K+ concentration treatments.