Shoot Development through Modified Transverse Thin Cell Layer (tTCL) Culture of Phalaenopsis Hybrid Protocorms

Autor: Kuo-Chin Lo, Jualang Azlan Gansau, Chia-Hung Shih, Chien-Yuan Kao
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Horticulturae, Vol 8, Iss 3, p 206 (2022)
Druh dokumentu: article
ISSN: 2311-7524
DOI: 10.3390/horticulturae8030206
Popis: This first-attempt study used microtome-based methods to generate a thin cell layer culture for the micropropagation of Phal. Hwafeng Redjewel × Phal. New Cinderella. Protocorms were embedded in various agarose concentrations (8–12%, w/v) and dried from 1 to 8 h before sectioning with a microtome. Optimal conditions for slicing sections of 100 to 300 μm were achieved when the protocorms were embedded at 10% (w/v) agarose and dried for 4 h under laminar flow, and the hardness of the agarose block under these conditions reached 641.8 ± 9.5 g·cm−2. The sectioned protocorms that were cultured on an MS medium supplemented with 1.2 mg·L−1 6-benzylaminopurine and 0.1 mg·L−1 α-naphthaleneacetic acid were capable of growth and differentiated through the neoformation of protocorm-like bodies (PLBs) and/or callus before subsequent regeneration into plantlets and development into healthy plants in a nursery environment. The results of this study demonstrate that microtome-based tTCL is a reliable and promising approach for mass propagation and possible virus-free propagation objectives for Phalaenopsis.
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