Is impeded root growth related to the occurrence of rubber tree Trunk Phloem Necrosis (TPN)?: preliminary results from NE Thailand
This paper presents the results of a pilot project aimed at unravelling putative links between the occurrence of Trunk Phloem Necrosis (TPN) and impeded root system development in a small rubber tree (RRIM 600) plantation of NE Thailand. To investigate as many root parameters as possible, our method...
| Main Authors: | , , , , , , , |
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| Format: | Conference Paper |
| Language: | Inglés |
| Published: |
2007
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/38624 |
| _version_ | 1855535271845560320 |
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| author | Pierret, Alain Doussan, C. Pages, L. Do, F. C. Gonkhamdee, S. Maeght, J.L. Chintachao, W. Nandris, D. |
| author_browse | Chintachao, W. Do, F. C. Doussan, C. Gonkhamdee, S. Maeght, J.L. Nandris, D. Pages, L. Pierret, Alain |
| author_facet | Pierret, Alain Doussan, C. Pages, L. Do, F. C. Gonkhamdee, S. Maeght, J.L. Chintachao, W. Nandris, D. |
| author_sort | Pierret, Alain |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | This paper presents the results of a pilot project aimed at unravelling putative links between the occurrence of Trunk Phloem Necrosis (TPN) and impeded root system development in a small rubber tree (RRIM 600) plantation of NE Thailand. To investigate as many root parameters as possible, our methodology included a wide range of techniques: destructive sampling, root mapping, rhizolocation, architectural characterisation of coarse woody roots, and electrical measurements by capacitance and earth impedance. We found that under the environmental conditions that prevail in NE Thailand, there is no relationship between most of the root parameters we measured and TPN, at least within the first meter of the soil profile. This result contrasts with observations previously made in western Africa. However, we found that at a soil depth of ~25 cm where maximum soil bulk density is generally observed, Healthy (H) trees can grow roots of significantly higher Specific Root Length (SRL) than those affected by TPN. The next phase of this work which is part of a multidisciplinary programme on TPN, will therefore focus on root morphological descriptors such as SRL and on the analysis of the deeper parts of rubber tree root systems. |
| format | Conference Paper |
| id | CGSpace38624 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2007 |
| publishDateRange | 2007 |
| publishDateSort | 2007 |
| record_format | dspace |
| spelling | CGSpace386242023-02-15T12:07:53Z Is impeded root growth related to the occurrence of rubber tree Trunk Phloem Necrosis (TPN)?: preliminary results from NE Thailand Pierret, Alain Doussan, C. Pages, L. Do, F. C. Gonkhamdee, S. Maeght, J.L. Chintachao, W. Nandris, D. hevea brasiliensis stress root systems analysis This paper presents the results of a pilot project aimed at unravelling putative links between the occurrence of Trunk Phloem Necrosis (TPN) and impeded root system development in a small rubber tree (RRIM 600) plantation of NE Thailand. To investigate as many root parameters as possible, our methodology included a wide range of techniques: destructive sampling, root mapping, rhizolocation, architectural characterisation of coarse woody roots, and electrical measurements by capacitance and earth impedance. We found that under the environmental conditions that prevail in NE Thailand, there is no relationship between most of the root parameters we measured and TPN, at least within the first meter of the soil profile. This result contrasts with observations previously made in western Africa. However, we found that at a soil depth of ~25 cm where maximum soil bulk density is generally observed, Healthy (H) trees can grow roots of significantly higher Specific Root Length (SRL) than those affected by TPN. The next phase of this work which is part of a multidisciplinary programme on TPN, will therefore focus on root morphological descriptors such as SRL and on the analysis of the deeper parts of rubber tree root systems. 2007 2014-06-13T11:42:32Z 2014-06-13T11:42:32Z Conference Paper https://hdl.handle.net/10568/38624 en Limited Access Pierret, Alain; Doussan, C.; Pages, L.; Do, F. C.; Gonkhamdee, S.; Maeght, J. L.; Chintachao, W.; Nandris, D. 2007. Is impeded root growth related to the occurrence of rubber tree Trunk Phloem Necrosis (TPN)?: preliminary results from NE Thailand. Paper presented at IRRDB Annual Meeting, Siem Reap Cambodia, 12-16 November 2007. 10p. |
| spellingShingle | hevea brasiliensis stress root systems analysis Pierret, Alain Doussan, C. Pages, L. Do, F. C. Gonkhamdee, S. Maeght, J.L. Chintachao, W. Nandris, D. Is impeded root growth related to the occurrence of rubber tree Trunk Phloem Necrosis (TPN)?: preliminary results from NE Thailand |
| title | Is impeded root growth related to the occurrence of rubber tree Trunk Phloem Necrosis (TPN)?: preliminary results from NE Thailand |
| title_full | Is impeded root growth related to the occurrence of rubber tree Trunk Phloem Necrosis (TPN)?: preliminary results from NE Thailand |
| title_fullStr | Is impeded root growth related to the occurrence of rubber tree Trunk Phloem Necrosis (TPN)?: preliminary results from NE Thailand |
| title_full_unstemmed | Is impeded root growth related to the occurrence of rubber tree Trunk Phloem Necrosis (TPN)?: preliminary results from NE Thailand |
| title_short | Is impeded root growth related to the occurrence of rubber tree Trunk Phloem Necrosis (TPN)?: preliminary results from NE Thailand |
| title_sort | is impeded root growth related to the occurrence of rubber tree trunk phloem necrosis tpn preliminary results from ne thailand |
| topic | hevea brasiliensis stress root systems analysis |
| url | https://hdl.handle.net/10568/38624 |
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