Plant Tissue Cult. & Biotech. 15(2): 127-133, 2005 (December)

Colchicine Induced Morphological Variants in Pineapple

A. Mujib

Department of Botany, Hamdard University, New Delhi-110 062, India

Key words: Pineapple, Colchicine, Morphological variant

Abastract

In pineapple compact nodular callus was induced from various plant parts that showed high regenerative ability. Colchicine was used to obtain some variants. In colchicine-treated callus about 5% of the regenerants were variants/albinos which showed significantly low chlorophyll a and chlorophyll b. Shoot and root regenerating potentiality and other growth behaviour were poor in variants compared to normal plants. Shoot tip culture of the variants and callus from the same source continuously produced variant progenies for a number of (4 - 5) in vitro cycles. Compared to normal, two important peroxidase bands were missing in the variant pineapple.

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