Soluble protein extracted from leaf and seed of citrus plant was studied by polyacrylamide gel electrophoresis.When leaf age was five to ten mounths old, the leaf protein pattern was relatively stable. Leaf protein pattern could be affected by soil condition, but in general the numble of which couldn't be changed. The protein patterns of matural leaf taken from various shoots(spring, summer and antumn shoots)had almost no difference. Leaf protein pattern could be used to seperate zygotic and nucellar progen...