In vitro propagation through transverse thin cell layer (tTCL) culture system of lady’s slipper orchid: Paphiopedilum callosum var. sublaeve

Autor: Nararatn Wattanapan, Charassri Nualsri, Upatham Meesawat
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: Songklanakarin Journal of Science and Technology (SJST), Vol 40, Iss 2, Pp 306-313 (2018)
Druh dokumentu: article
ISSN: 0125-3395
DOI: 10.14456/sjst-psu.2018.48
Popis: Paphiopedilum callosum var. sublaeve, a lady’s slipper orchid native to southern Thailand, is protected under CITES (appendix I) due to habitat destruction and over-collection. The novel micropropagation technique for this endemic species was investigated. A 2-week preculture of seeds in distilled water before transfer to 1/2MS solid medium was the optimal conditions to promote seed germination in vitro. Shoot tip-derived transverse thin cell layer (tTCL) explants cultured on MVW solid medium containing 1.0 mg/L TDZ for 8 weeks provided the highest percentage of regenerated protocorm-like bodies (46.67±6.67), shoot formation (40.00±5.16), root formation (30.00±12.38) and survival rate (70.00±4.47). The acclimatized plantlets potted in sphagnum moss in the greenhouse grew well at 80% survival rate. No genetic variation was detected between the regenerated plantlets and their own mother plants based on RAPD marker.
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