Citation
Yeang H.Y., . Impedance of latex exudation by the bark excision wound during tapping Hevea brasiliensis. pp. 89-96. ISSN 0127-7065
Abstract
The surfaces of the tapping cuts on Tjir 1 and RRIM 623 trees were scraped immediately after tapping to enhance wounding arising from excision of the bark shavings. A marked increase in the rate of latex vessel plugging and a decrease in yield were observed suggesting that wounding the surface of the tapping cut contributed towards latex vessel plugging. Re-tapping GT 1 and RRIM 501 trees 80 min after the initial tapping before flow from the initial tapping had ceased extended the flow duration. However GT 1 trees that were re-tapped 20 min after the initial tapping did not show an increase in flow duration. In fact a significant decrease was observed in RRIM 501 trees that were similarly treated. This suggests that wounding arising from bark excision during tapping has a significant role in latex vessel plugging and the restriction of latex outflow. Impedance of latex flow is possibly mediated through destabilisation of latex by coagulants released by the injured bark tissue.
Download File
Full text available from:
|
Abstract
The surfaces of the tapping cuts on Tjir 1 and RRIM 623 trees were scraped immediately after tapping to enhance wounding arising from excision of the bark shavings. A marked increase in the rate of latex vessel plugging and a decrease in yield were observed suggesting that wounding the surface of the tapping cut contributed towards latex vessel plugging. Re-tapping GT 1 and RRIM 501 trees 80 min after the initial tapping before flow from the initial tapping had ceased extended the flow duration. However GT 1 trees that were re-tapped 20 min after the initial tapping did not show an increase in flow duration. In fact a significant decrease was observed in RRIM 501 trees that were similarly treated. This suggests that wounding arising from bark excision during tapping has a significant role in latex vessel plugging and the restriction of latex outflow. Impedance of latex flow is possibly mediated through destabilisation of latex by coagulants released by the injured bark tissue.
Additional Metadata
| Item Type: | Article |
|---|---|
| Additional Information: | Ill.; 4 tables; l3 ref. Summary (En). Appendix |
| AGROVOC Term: | HEVEA BRASILIENSIS |
| AGROVOC Term: | LATEX |
| AGROVOC Term: | INCISION EN LA CORTEZA |
| AGROVOC Term: | COAGULACION/ ESCISION |
| AGROVOC Term: | RENDIMIENTO |
| AGROVOC Term: | CAUDAL |
| AGROVOC Term: | CORTEZA |
| Depositing User: | Ms. Norfaezah Khomsan |
| Last Modified: | 24 Apr 2025 05:54 |
| URI: | http://webagris.upm.edu.my/id/eprint/18910 |
Actions (login required)
 |
View Item |
