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Variation of phloem turgor pressure in Hevea brasiliensis: An implication for latex yield and tapping system optimization

文献类型： 外文期刊

作者： An, Feng 1 ; Lin, Weifu 1 ; Cahill, David 3 ; Rookes, James 3 ; Kong, Lingxue 2 ;

作者机构： 1.Chinese Acad Trop Agr Sci, Danzhou Invest & Expt Stn Trop Crops, Minist Agr, Rubber Res Inst, Danzhou 571737, Hainan, Peoples R China

2.Deakin Univ, Inst Frontier Mat, Geelong, Vic 3216, Australia

3.Deakin Univ, Sch Life & Environm Sci, Geelong, Vic 3216, Australia

关键词： Rubber tree (Hevea brasiliensis);Phloem turgor pressure;Tapping system;Yield potential;Ethrel stimulation

期刊名称：INDUSTRIAL CROPS AND PRODUCTS （ 影响因子：5.645； 五年影响因子：5.749 ）

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收录情况： SCI

摘要： Phloem turgor pressure (PTP) is the initial driving force for latex flow after a rubber tree is tapped and therefore plays an important role in rubber tree latex production. Variation in PTP with rubber tree clone, age, yield potential and commonly used Ethrel (an ethylene releaser) stimulation have, however, not been comprehensively studied to date. The aim of this study was to investigate these relations and examine whether PTP can be used as an index for rubber tree clone assessment and tapping system optimization. The results showed that: (1) the daily change of PTP in the foliation season suggests that a high PTP can ensure a high latex yield and tapping could be moved forward to midnight or earlier in the night; (2) the decrease of PTP from the basal to distal stem indicates the benefit of a controlled upward tapping system; (3) the logarithmic increase in PTP with rubber tree planting age and age-based mean girth suggests that the preferred age for the commencement of rubber tree tapping is eight years; (4) the change of PTP with regenerated bark age suggests that the regenerated bark could be exploited again after the second year; (5) PTP is positively related to the yield potential of rubber tree clones; (6) although Ethrel stimulation could not significantly increase the initial PTP of a rubber tree, it delays the recovery of PTP after tapping. Therefore, PTP is an indicator of rubber tree latex yield and can be used for tapping system optimization.

  • 相关文献

[1]Involvement of rootstocks and their hydraulic conductance in the drought resistance of grafted rubber trees. An Feng,Gong Lidan,Wang Zhenhui,Lin Weifu,An Feng,Gong Lidan,Wang Zhenhui,Lin Weifu,An Feng,Kong Lingxue. 2011

[2]Real-time measurement of phloem turgor pressure in Hevea brasiliensis with a modified cell pressure probe. An, Feng,Lin, Weifu,An, Feng,Kong, Lingxue,Cahill, David,Rookes, James. 2014

[3]Development, characterization, and cross-species/genera transferability of SSR markers for rubber tree (Hevea brasiliensis). Yu, Fei,Feng, Su-Ping,Wang, Jing-Yi,Li, Wei-Guo,Yu, Fei,Wang, Jing-Yi,Feng, Su-Ping,Wu, Yao-Ting,Wang, Bao-Hua.

[4]Latex dilution reaction during the tapping flow course of Hevea brasiliensis and the effect of Ethrel stimulation. An, Feng,Xie, Guishui,Zou, Zhi,An, Feng,Kong, Lingxue,Cai, Xiuqing,Rookes, James,Cahill, David.

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