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Somatic embryogenesis, organogenesis and plant regeneration in taro (Colocasia esculenta var. esculenta)

Deo, Pradeep C., Harding, Robert M., Taylor, Mary, Tyagi, Anand P., & Becker, Douglas K. (2009) Somatic embryogenesis, organogenesis and plant regeneration in taro (Colocasia esculenta var. esculenta). Plant Cell, Tissue and Organ Culture, 99(1), pp. 61-71.

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Abstract

Callus was initiated in three different ‘‘esculenta’’ taro cultivars by culturing corm slices in the dark on half-strength MS medium supplemented with 2.0 mg/l 2,4- dichlorophenoxyacetic acid (2,4-D) for 20 days followed by subculture of all corm slices to half-strength MS medium containing 1.0 mg/l thidiazuron (TDZ). Depending on the cultivar, 20–30% of corm slices produced compact, yellow, nodular callus on media containing TDZ. Histological studies revealed the presence of typical embryogenic cells which were small, isodiametric with dense cytoplasms. Somatic embryos formed when callus was transferred to hormone-free medium and *72% of the embryos germinated into plantlets on this medium. Simultaneous formation of roots and shoots during germination, and the presence of shoot and root poles revealed by histology, confirmed that these structures were true somatic embryos. Plants derived from somatic embryos appeared phenotypically normal following 2 months growth in a glasshouse. This method is a significant advance on those previously reported for the esculenta cultivars of taro due to its efficiency and reproducibility.

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9 citations in Scopus
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8 citations in Web of Science®

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ID Code: 29026
Item Type: Journal Article
Keywords: Somatic embryogenesis, Callus, Taro, TDZ, Colocasia esculenta var. esculenta
DOI: 10.1007/s11240-009-9576-0
ISSN: 0167-6857
Subjects: Australian and New Zealand Standard Research Classification > BIOLOGICAL SCIENCES (060000) > PLANT BIOLOGY (060700) > Plant Developmental and Reproductive Biology (060703)
Divisions: Current > Research Centres > Centre for Tropical Crops and Biocommodities
Past > QUT Faculties & Divisions > Faculty of Science and Technology
Copyright Owner: Copyright 2009 Springer Verlag.
Copyright Statement: The original publication is available at www.springerlink.com
Deposited On: 04 Dec 2009 12:26
Last Modified: 01 Mar 2012 00:04

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