Difference in tolerance to potassium deficiency between two corn inbred lines

摘要

Com inbred line tolerant to K~+ deficiency (T) and sensitive to K~+ deficiency (C) were hydroponically grown in 1/2 Hoagland solution to study the difference in tolerance to K~+ deficiency. With the reduction of K~+ concentration, DW became apparently greater in T than in C, taproot elongation increased in C than in T, the number of lateral roots was fewer in C. T had a stronger K~+-uptake than C, the difference became even more obvious with the lowering of K~+ concentrations of culture solution. K~+ dependent H~+ extrusion from the root treated with K~+ deficiency was larger in T than in C.