摘要：Water has an important effect in grape growth, however, there’s little information on water transport distance on grape5s physiological characteristics. The growth and development, the anatomical structure of secondary xylem and phloem, the sap flow and the water transport in M eili grape were observed and studied. The study showed that, with the extension of water transport distance, the growth rate and quantity of current-year shoot leaves decreased at different growth periods. The plasticities of leaf water content (WC), free water content (FWC), leaf dry matter content and water saturation deficit (WSD) of M eili grape were very small and had no significant differences. W hile the plasticities of water potential (WP), bound water content (BWC), bound water/free water (RBF), leaf area (LA) and specific leaf area (SLA) increased with the water transport distance extended and showed significant differences (P < 0.05).There were significant differences in stomatal density and stomatal length, and had no significant differences in leaf thickness and stomatal width. The transverse diameter growth of grape berries showed a typical hyper-S curve and showed no significant differences. The sugar unloading rate on the 1st shoot was significantly higher than that on the 7th shoot. The fresh weight per berry showed significant d ifferences, while there was no significant differences in dry weights. The relative conductivity of xylem vessels in the 1st, 4th and 7th current-year shoots increased gradually. Water transport distance was inversely proportional to branch maturity, growth potential and xylem width, and was directly proportional to vessel density and vessel length.
