THE EFFECT OF 4D AND 4R ON THE SYNTHESIS OF THREE KINDS OF ISOZYMES IN WHEAT A STUDY ON ISOZYMES OF ESTERASE OF GENUS AMARANTHUS IN CHINA Analysis of the Esterase Isozymes in Three Lines and F1 in Oryza sativa and Prediction of Heterosis A Study on Isozymes of Five Different Types of Solanum nigrum in China Studies on the Esterase Isozymes in the New Lines of Progeny of the F1 Hybrid Rice