梅花垂枝性状次生木质部解离研究

为探究梅花纤维发育对枝条形态的影响,采用光学显微镜和过氧化氢—醋酸解离法,选取直枝形与垂枝形梅花4个品种一年生枝条,分基部、中部、梢部对枝条重力方向上下侧次生木质部进行解离观察。结果表明:直枝形梅花枝条基部下侧纤维显著长于上侧,垂枝形枝条基部上侧纤维显著长于下侧,中部、梢部无显著差异;4个品种枝条基部中部梢部纤维直径均无显著差异。说明枝条纤维不均匀发育影响梅花枝条形态。

Studies on the cell separation of the secondary xylem of pendulous characteristics of Prunus mume

Optical microscope was used to explore fiber morphology both in the upper and lower sides of one year-old branches among four upright and pendulous varieties by the H₂O₂-CH₂COOH maceration. The results were as followed: the length of fiber in the lower side of the upright branches at the bottom was longer than the upper side significantly,the length of fiber in the upper side of the pendulous branches at the bottom was longer than the lower side significantly. There were no significant differences in other positions; the fiber diameter at different positions among four varieties indicated no significant differences separately.The results showed that the diferences of fiber size effects shoot development of Prunus mume.