Change of Protein and Carbohydrate in Vanilla planifolia Andrews During Flower Bud Differentiation Period
The flower buds, leaf buds, mixed flower buds and their functional leaves during flower bud differentiation of Vanilla planifolis Andrews were used as the material, the changes of protein and carbohydrate contents were studied. The results showed that the protein contents of leaf buds kept descending and protein contents of flower buds and mixed buds increased at beginning of inflorescence differentiation stage and then descended, indicating that flower buds need accumulate a large amount of protein before the inflorescence differentiation. The soluble sugar and sucrose contents of leaf buds didn't change significantly, and the contents of flower buds and mixed buds rose and descended obviously. The contents of soluble sugar and sucrose of flower buds were higher than that of leaf buds during the whole flower bud differentiation. The starch contents of leaf buds increased, and that of flower buds and mixed buds increased at beginning and then descended. The C/N of functional leaves of flower buds and mixed buds was higher than that of leaf buds during the whole flower bud differentiation, and significant differences were observed in functional leaves of flower buds and leaf buds.