DOI: 10.11648/j.ajpb.20261103.17 ISSN: 2578-8337

Advances in Propagation of Mulberry (Morus spp.): Role of Plant Growth Regulators, Rooting Substrates and Micropropagation Techniques

Krishan Meena, Anuradha Bishnoi, Piyush Verma, Sukhdev Singh, Vikas Sharma, Sanjay Acharya, Km Rooma, Kuldeep Meena
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Mulberry ( Morus spp.) is a fast growing woody perennial fruit crop that has its principal role in the sericulture sector as being its major food source of nutrition for the silkworm ( Bombyx mori ). Although a number of techniques for its propagation are available, its propagation through hardwood cuttings has go on most popular owing to its ease of operation, cheap cost of operation and result uniformity. However, successful rooting of mulberry cuttings has often being affected by a number of parameters like usage of PGRs, rooting substrate type and time of planting. The review focuses on evaluating the contribution of different PGRs more particularly indole-3-butyric acid (IBA), naphthalene acetic acid (NAA) and cytokinins in inducing root initiation and vegetative growth of mulberry cuttings. Among these PGRs, IBA was documented to be most efficient auxin of its own class because different studies indicated increased sprouting, number of root and survival rate of rooted cuttings on different genotypes of mulberry. The review has also enabled elucidation of role of rooting substrates to a larger extent; cocopeat, perlite, vermiculite, vermicompost and Farm Yard Manure mix showed superior rooting performance owing to their superior physical and chemical properties. In addition, improvement of micro-propagation techniques was also evaluated and documented to be efficient in terms of utilization of BAP and IBA for in vitro multiplication of shoot and root growth, while offering a substitute for rapid multiplication of elite genotypes. However, their limitation like genotype specific response to hormone, low rate of acclimatization and erratic field performance were reported. Based on these study, this review recommends optimizing of variety-specific hormone media combination, standardization of micro-propagation regime and integration of molecular tools for precision in propagation for improvement of propagation efficiency, with genetic fidelity of planting material and ensuring sustainable production of mulberry for a more resilient sericulture sector.

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