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VOL. 6, ISSUE 6 (2021)
The inclination of laticifers and phloic rays in six Hevea Clones
Authors
Sindhumol A, Philipose Omman
Abstract
Hevea brasiliensis, coming under the family Euphorbiaceae is the major contributor of Natural Rubber for commercial utilization. The latex which contains rubber particles is synthesized in the latex vessels present in the secondary phloem. Latex is exploited by the process of controlled wounding called tapping. The commonly followed tapping system is upper left to lower right spiral cut based on the concept that latex vessels are inclined 3-5° towards the right. But anatomically it is proved that latex vessels are inclined to right or left. The present study aims to understand the inclination of latex vessels and phloic rays in six clones of H. brasiliensis viz. PB 255, PB 312, PB 314, RRII 417, RRII 422 and RRII 430. The inclination of latex vessels shows a mixed pattern in most of the clones studied. Even though a general trend is not predictable in the present study, clone PB 314 has more tendency towards left and RRII 417 towards rightward angle. The inclination pattern of latex vessels in Hevea can be used to design a new angle of tapping after field trials.
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Pages:406-409
How to cite this article:
Sindhumol A, Philipose Omman "The inclination of laticifers and phloic rays in six <em>Hevea</em> Clones ". International Journal of Botany Studies, Vol 6, Issue 6, 2021, Pages 406-409
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