Biochemical and histological aspects of necrotic and induced Tapping Panel Dryness (TPD)

Lacrotte Régis, Jacob Jean-Louis, Chrestin H., Pujade-Renaud Valérie, Montoro Pascal. 1997. Biochemical and histological aspects of necrotic and induced Tapping Panel Dryness (TPD). In : Seminar on the biochemical and molecular tools for exploitation diagnostic and rubber tree improvement. Workshop on electrophoresis application to rubber tree clone identification. Mahidol University, RRIT, ORSTOM, CIRAD. Bangkok : Mahidol University, 17 p. Seminar on the Biochemical and Molecular Tools for Exploitation Diagnostic and Rubber Tree Improvement, Bangkok, Thaïlande, 20 October 1997/22 October 1997.

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Autre titre : Aspects biochimiques et histologiques des nécroses et des encoches de saignée sèches

Abstract : The appearance of "dry trees" in rubber plantations and the development of Tapping Panel Dryness has been the subject of a considerable number of studies. A distinction can be made between the two main types of TPD through symptomatological and development differences. The total or partial absence of latex flow, or Tapping Panel Dryness in #Hevea brasiliensis#, may or may not be combined with necrosis. If there is none, it is usually the case of laticifer physiological fatigue induced by over-exploitation of the trees. After a rest period, tapping can be resumed, therefore, this type of TPD is reversible. The other type, necrotic TPD, i.e. brown bast, is a serious histological, cytological and metabolic disruption, which causes considerable disorganization of the entire secondary, including the latex cells. This phenomenon is usually irreversible. (Résumé d'auteur)

Mots-clés Agrovoc : Hevea brasiliensis, Nécrose, Tâche, Tissu végétal, Analyse de tissus, Biochimie, Physiologie végétale

Mots-clés complémentaires : Panneau de saignée, Encoche sèche, Système de saignée

Classification Agris : H50 - Miscellaneous plant disorders
F62 - Plant physiology - Growth and development

Auteurs et affiliations

  • Lacrotte Régis
  • Jacob Jean-Louis, CIRAD-CP-AGRONOMIE (FRA)
  • Chrestin H.
  • Pujade-Renaud Valérie, CIRAD-CP-HEVEA (THA)
  • Montoro Pascal, CIRAD-CP-HEVEA (THA)

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