Shoot and Root Induction of Peltophorum pterocarpum (DC.) Back. ex Heyne in In Vitro Culture

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Pailin Surakhotand
Phruet Racharak

Abstract

                  Peltophorum pterocarpum (DC.) Back. ex Heyne is a valuable tree, which has been planted for a long time due to the multi-purpose nature of its use. In in vitro culture, the use of axillary buds derived from a high-quality seed stand, was the most efficient way to select a good tree. The surface disinfectant Clorox at a concentration of 20%, applied for 20 min, resulted in the best sterilization percentage, even though it caused surface wilting on the explant. Nevertheless, it was able to recover after a culture of 14-28 days. A shoot induction formula comprising of an MS medium combined with two types of cytokinins, Kn and BAP, gave excellent results compared to a combination of with cytokinins (Kn or BAP) and auxin (NAA). Moreover, the MS medium mixed with a single plant growth regulator, cytokinin or auxin, was unsuitable to use for shoot induction formula. The highest shoot proliferation average obtained was 3.2±0.04 shoots per explant under an MS media mixed with 0.1 ppm Kn and 0.5 ppm BAP. Furthermore, these formulas caused unwanted callus, which resulted in a low explants response and death. These symptoms could be found in every shoot induction formula but they were far fewer in number. Similar average shoot lengths were obtained through all the formulas. A root initiation with 2.0 ppm IBA resulted in an average number of root induction of 2.0±0.01 roots per explants, which showed a low response and inappropriate results. However, it showed a robust and vigorous root characteristic, sufficient for acclimatization and growth. 

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How to Cite
Surakhotand, P., & Racharak, P. . (2020). Shoot and Root Induction of Peltophorum pterocarpum (DC.) Back. ex Heyne in In Vitro Culture. Thai Journal of Forestry, 39(2), 1–11. Retrieved from https://li01.tci-thaijo.org/index.php/tjf/article/view/249006
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Original Articles

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