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首页> 外文期刊>Acta Horticulturae >Xylem sap flow and trunk growth of 5 hybrid rubber tree clones
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Xylem sap flow and trunk growth of 5 hybrid rubber tree clones

机译：Xylem SAP流量和5个混合橡胶树克隆的躯干生长

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摘要

This investigation studies growth rate and sap flux density of trees of five hybrid rubber tree clones. The clones were bred from the original RRIM600 (female) and RRII105 (male) clones. This study was conducted at the Nong Khai Rubber Research Center, in northeast Thailand, during the rainy season of June-August 2015. Three-year-old selections of five hybrid clones (code 7, 85, 91, 161, 172) were compared with the mother clone (RRIM600). The experimental design was randomized complete block design (RCBD) with six clones (treatments) and three periods (blocks). The xylem sap flow was measured by the transient thermal dissipation method, utilizing Granier's probe. Results showed that the trunk diameters of each of the six clones differed significantly (P<0.05); trees of clone code 91 had the smallest (3.88 cm), those of clone code 161 the larges trunk diameter (5.92 cm). Maximum and daily sap flux densities were not significantly different in trees of all clones. However, sap flux densities and trunk diameter were positively correlated (P<0.05), indicating a high transpiration and a positive effect on tree growth.
机译：本研究研究五种杂交橡胶树克隆树的生长速率和SAP通量密度。克隆从原始RRIM600（雌性）和RRII105（男性）克隆中繁殖。本研究在2015年6月至8月的雨季在泰国东北部的Nong Khai橡胶研究中心进行了比较了三年历史的五个混合克隆（代码7,85,91,161,172）的选择与母亲克隆（RRIM600）。实验设计是随机的完整块设计（RCBD），具有六个克隆（治疗）和三个时段（块）。通过瞬态散热法测量木质SAP流量，利用肉准时的探头。结果表明，六个克隆中的每一个的躯干直径显着不同（P <0.05）;克隆代码91的树木具有最小（3.88厘米），克隆代码161盗贼直径（5.92厘米）。在所有克隆的树木中，最大和每日SAP助熔剂密度没有显着差异。然而，SAP助焊剂密度和躯干直径呈正相关（P <0.05），表明高蒸腾率和对树生长的积极影响。

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