Two maize species of drought-resistance LuYu No. 14 and drought-sensitive Ye Dan No. 13 were cultivated by solution in the mode of simulated water stress with PEG .The signal transduction substances and route between ABA and osmotica such as proline , free amino acid .soluble sugars ,potassium ,sodium .calcium and Lea protein were discussed under water stress. The aim is to offer academic foundation for the role of phospholipase D /C and Ca2+/CaM in plant' anti-adversity and in ABA signal transduction .The ...