Citation
Gomez J. B., . and Ghandimathi H., . The brown bast syndrome of Hevea Pt. 1. Morphological observation. pp. 81-89. ISSN 0127-7065
Abstract
From a study of several cases of long rested brown bast trees by visual examination scoring using a sharp instrument looking at sectional views and by histological examination of the tissues it is found that excessive meristematic activity is a predominant feature which leads to formation of tumorous tissue. Both the vascular cambial activity and the activity of adventitious meristems surrounding previous nuclei of necrotic activity resulting in the formation of nodules which finally form the so-called occluded xylem in the bark are responsible for the eventual manifestation of tumours. In some cases however the nodule formation is not evident and the affected bark dries cracks up and sloughs off. In such cases smooth renewal of bark results from the activity of the vascular cambium alone. The implications of these findings are discussed.
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Abstract
From a study of several cases of long rested brown bast trees by visual examination scoring using a sharp instrument looking at sectional views and by histological examination of the tissues it is found that excessive meristematic activity is a predominant feature which leads to formation of tumorous tissue. Both the vascular cambial activity and the activity of adventitious meristems surrounding previous nuclei of necrotic activity resulting in the formation of nodules which finally form the so-called occluded xylem in the bark are responsible for the eventual manifestation of tumours. In some cases however the nodule formation is not evident and the affected bark dries cracks up and sloughs off. In such cases smooth renewal of bark results from the activity of the vascular cambium alone. The implications of these findings are discussed.
Additional Metadata
| Item Type: | Article |
|---|---|
| AGROVOC Term: | Hevea brasiliensis |
| AGROVOC Term: | Hevea |
| AGROVOC Term: | Plant diseases |
| AGROVOC Term: | Plant tissues |
| AGROVOC Term: | Meristem culture |
| AGROVOC Term: | Root nodules |
| AGROVOC Term: | Bark |
| AGROVOC Term: | Plant morphology |
| AGROVOC Term: | Tissue analysis |
| AGROVOC Term: | Xylem |
| Geographical Term: | Malaysia |
| Depositing User: | Ms. Suzila Mohamad Kasim |
| Last Modified: | 28 Apr 2025 04:43 |
| URI: | http://webagris.upm.edu.my/id/eprint/23496 |
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