What is the role of meta-Topolin (mT) in the in vitro propagation of sweet potato (Ipomoea batatas)?

Label:chem

Topic
Meta-Topolin (mT) is an adenine-based cytokinin that has been shown to promote shoot multiplication and rooting in various plant species. It is known for its positive impact on in vitro propagation, leading to fewer physiological disorders compared to other cytokinins like benzylaminopurine (BAP). This study investigates the effect of mT on the in vitro propagation of sweet potato, aiming to develop an improved protocol for large-scale production of true-to-type planting material.
Answer
Meta-Topolin (mT) significantly enhances shoot induction and multiplication in sweet potato. The study found that 100% shoot induction was achieved with mT concentrations ranging from 3.11 to 16.58 mM (except 4.15 mM). The best multiplication response, with the maximum number of shoots (7.26 ± 0.17) and axillary nodes (65.25 ± 1.81), was observed on MS medium containing 8.29 mM mT. This indicates that mT can be effectively used to improve the in vitro propagation efficiency of sweet potato.
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