1 材料与方法
1.1 材料
1.2 方法
1.3 数据处理
2 结果与分析
2.1 死皮发生过程中乳管的变化
图1 橡胶树‘RY7-33-97’健康树和不同级别死皮树树皮结构A:健康树;B~D:三级死皮树正常排胶部位、点状排胶部位以及不排胶部位;E~F:五级死皮树点状排胶部位和不排胶部位树皮。白色箭头表示石细胞团;红色箭头表示膨大乳管;Ca:形成层。标尺=200 µm。 Fig. 1 Bark structure of health tree and different grades of TPD tree in ‘RY7-33-97’ A: Cross-section of the healthy bark; B-D: Cross-section of the normal latex flow, punctiform latex flow and non-latex flow of bark in the third grade TPD; E-F: Cross-section of punctiform latex flow and non-latex flow of bark in the fifth grade TPD tree. The white arrows show the stone cells; The red arrows show swelling laticifers; Ca: Cambia; Scale bars=200 µm. |
图2 橡胶树‘RY7-33-97’健康树和不同级别死皮树树皮中乳管和筛管的相关分析*表示在0.05水平上差异显著;**表示在0.01水平上差异极显著。 Fig. 2 Analysis of parameters about the laticifer and sieve tube of bark in health tree and different grades of TPD tree in ‘RY7-33-97’ * means significant difference at the 0.05 level; ** means extremely significant difference at the 0.01 level. |
2.2 筛管、韧皮射线以及石细胞的变化
2.3 单宁的变化
图3 橡胶树‘RY7-33-97’健康树和不同级别死皮树树皮结构中单宁的积累A1-A2、B1-B2、C1-C2、D1-D2、E1-E2、F1-F2:分别示健康树,三级死皮树正常排胶部位、点状排胶部位、不排胶部位,五级死皮树点状排胶部位、不排胶部位树皮的靠近形成层的内侧和靠近砂皮层的外侧;红色箭头示单宁细胞;Ca:形成层。标尺=100 µm。 Fig. 3 Accumulation of tannin in bark of healthy trees and different grades of TPD trees in ‘RY7-33-97’ A1-A2, B1-B2, C1-C2, D1-D2, E1-E2, F1-F2: Cross-section of the bark, showing that the inside next to the cambia and the outside next to the sandy layer of different samples for the healthy tree, the places of normal latex flow, punctiform latex flow and non-latex flow of the third grade TPD, the places of punctiform latex flow and non-latex flow of the fifth grade TPD respectively. The red arrow shows the tannin cell; Ca: Cambia; Scale bars=100 µm. |
图4 荧光定位显示橡胶树‘RY7-33-97’健康树和不同级别死皮树皮中单宁的积累A1~F1:荧光定位分析树皮中单宁的分布,其中,A1为健康树树皮,B1~D1分别是三级死皮树正常排胶部位、点状排 胶部位和不排胶部位树皮,E1、F1分别是五级死皮树点状排胶部位和不排胶部位树皮;A2~F2:合并图,与左侧荧光图相对应。红箭示单宁细胞;标尺=100 μm。 Fig. 4 Fluorescence localization of tannin in bark of healthy trees and different grades of TPD trees in ‘RY7-33-97’ A1-F1: Fluorescence localization of tannin cell in barks, A1 is the bark of healthy tree, B1-D1 is the bark for the normal latex flow, punctiform latex flow and non-latex flow in the third grade TPD respectively, E1, F1 is the bark for punctiform latex flow and non- latex flow in the fifth grade TPD tree respectively; A2-F2 is merge images, corresponding to the left images. The red arrows show the tannin cells. Scale bars = 100 μm. |
