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Propagation of Ornamental Plants
23(2): 39-48, 2023

CONSERVATION OF DENDROBIUM ANOSMUM LINDL. ‘TIM HUE’
BY IN VITRO PROPAGATION

Nguyen Huu Tho1,4, Nguyen Thi Oanh1, Truong Thi Bich Phuong2, Pham Thanh3,
Hoang Khanh Linh3, and Nguyen Thi Kim Cuc1*

1 Institute of Biotechnology, Hue University, Road 10, Phu Thuong, Phu Vang,
Thua Thien Hue, Vietnam, *E-mail: ntkcuc.huib@hueuni.edu.vn
2 Hue University of Sciences, Hue University, 77 Nguyen Hue, Hue City,
Thua Thien Hue, Vietnam
3 Hue University of Education, Hue University, 34 Le Loi, Hue City,
Thua Thien Hue, Vietnam
4 College Electro-Mechanics, Construction and Agro-Forestry of Central Vietnam,
KV8, Bui Thi Xuan Ward, Quy Nhon city, Binh Dinh, Vietnam



Dendrobium anosmum ‘Tim Hue’ is a local orchid from the Thua Thien Hue wild forest with typical color and fragrance, needing conservation measures. This study focuses on in vitro propagation of ‘Tim Hue’. Nodal segments used as initial explants were disinfected in 2% NaClO and 0.1% HgCl2 for 10 min, resulting in 66.7% aseptic explants. Axillary shoot induction was best (88.9%) in Murashige and Skoog (MS) medium containing 1.5 mg l-1 BAP and shoot multiplication was optimal in the same medium supplemented with 1.5 mg l-1 BAP and 0.5 mg l-1 IAA, with an estimated average of 6.0 shoots with 3.0 cm in length and 4.7 leaves after eight weeks of culture. Also, MS medium supplemented with 1 g l-1 activated charcoal, and 0.7 mg l-1 NAA or 0.5 mg l-1 IAA was found the most efficient medium for the rooting of shoots. ‘Tim Hue’ plantlets were well acclimatized to the nursery conditions with a survival rate of 97.8% on coconut coir and rice husk coal (1 : 1, w : w) or 95.6% on fern board with sphagnum moss.

Key words: conservation, Dendrobium anosmum Lindl. ‘Tim Hue’, in vitro propagation



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