Morpho-anatomy of Adventitious Roots of Vanilla (Vanilla planifolia Jacks. ex Andrews) During Attachment to Support Post

Netnet B. Deseo; Constancio C. de Guzman; Perlita A. Nuevo; Nerissa K. Torreta

Authors

Netnet B. Deseo Crop Physiology Division, Institute of Crop Science, College of Agriculture and Food Science, University of the Philippines Los Baños, College, Laguna 4031, Philippines
Constancio C. de Guzman Crop Physiology Division, Institute of Crop Science, College of Agriculture and Food Science, University of the Philippines Los Baños, College, Laguna 4031, Philippines
Perlita A. Nuevo Postharvest Horticulture Training and Research Center, College of Agriculture and Food Science, University of the Philippines Los Baños, College, Laguna 4031, Philippines
Nerissa K. Torreta Plant Biology Division, Institute of Biological Sciences, College of Arts and Sciences, University of the Philippines Los Baños, College, Laguna 4031, Philippines

Keywords:

vanilla, adventitious roots, attachment

Abstract

The attachment strategy of vanilla adventitious roots was characterized into three stages according to the size and the extent of adhesion, namely: (1) initial contact; (2) weak to strong attachment and; (3) strong and permanent attachment. The root tip was identified to send signals to produce profuse unicellular elongated root hairs in the velamen on the ventral side of the root facing the substrate which interacted with the surface of the substrate that brought the adhesion. Strong and irreversible attachment was observed between roots and textured substrate.

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