Involvement of Plant Growth Regulators and Varieties in the Multiplication of Cassava Planting Materials: A Case Study of Rwanda.
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Date
2022
Authors
Uwimana, Josette
Sakha, Michael
Danga, Benjamin
Gitari, Harun
Gweyi-Onyango, Joseph P
Journal Title
Journal ISSN
Volume Title
Publisher
Association for Agriculture Environment and Biotechnology
Abstract
Cassava (Manihot esculenta Crantz) is widely grown in tropical and sub-tropical regions of the world
primarily for its starch-rich roots and, in some cases, its nutritional foliage. The overarching goal of this
paper was to generate a comprehensive information on the status of the involvement of plant growth
regulators and varieties in the multiplication of cassava planting materials with particular reference to
Rwanda. This information will provide a platform and further strengthen the knowledge base on the
application of plant growth regulators (PGRs) by stakeholders in producing clean, high-quality cassava
plantlets. We demonstrated the interactive effect between different phytohormones and varieties. The
study showed the classical plant response to hormones with an increase in triggering an optimal value
before inhibition sets in. Phytohormone, 1-Naphthaleneacetic acid (NAA), and benzyl adenine (BAP)
were reported as being crucial in root and shoot growth, respectively:- with 10 mg/l being optimal doses.
The outcome is crucial in recommending users the choice of hormone and specific varietal combinations
and points to the fact that various PGRs concentration levels can be conveniently utilized successfully in
the multiplication of different cassava varieties. Since the hormonal response has been shown to trigger
differential reactions between different varieties, adopting such technologies needs to be considered
with caution in consultation with researchers and policymakers to avoid adverse effects. In conclusion,
the rapid multiplication of cassava planting materials depends on the PGRs concentration levels and
their admixtures, the genetic makeup of the varieties evaluated, subculture type/ number, and shoot tip/
nodal segment used.
Description
Article
Keywords
Planting medium, supplementation, propagation, varieties, hormonal concentrations, root, shoot
Citation
Uwimana, J., Sakha, M., Danga, B., Gitari, H., & Gweyi-Onyango, J. P. (2022). Involvement of Plant Growth Regulators and Varieties in the Multiplication of Cassava Planting Materials: A case study of Rwanda. IJBS, 9(02), 163-172.