Welcome to Chinese Journal of Tropical Crops,

Chinese Journal of Tropical Crops ›› 2023, Vol. 44 ›› Issue (5): 968-976.DOI: 10.3969/j.issn.1000-2561.2023.05.012

• Plant Cultivation, Physiology & Biochemistry • Previous Articles     Next Articles

Cultivation of Detoxification Seedlings and Optimization of the Rapid Propagation System of Southern Medicine Morinda officinalis How

CHEN Zi’en1, FENG Chong2, LUO Zhenhua1, LIU Mengyun1, DING Ping1,*()   

  1. 1. School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China
    2. Guangzhou Caizhilin Pharmaceutical Co., Ltd., Guangzhou, Guangdong 510000, China
  • Received:2022-04-24 Revised:2022-08-07 Online:2023-05-25 Published:2023-06-07
  • Contact: *DING Ping,E-mail:dingpinggz@126.com


Morinda officinalis How is a plant of the Rubiaceae, whose dried roots are used as medicine It can strengthen bones and muscles, nourish kidney-yang and remove wind and moisture. It is mainly distributed in Guangdong, Guangxi, Fujian and Hainan provinces. It is one of the four major southern medicines in China. In the main production areas of China, it is mainly propagated by cuttings. In the process of variety breeding, it is often disturbed by plant viruses. The viruses are transmitted and accumulated in plants through asexual propagation of plants, resulting in the inhibition of plant growth and the decline of yield and quality. Therefore, for the purpose of tissue culture detoxification of M. officinalis, the tissue culture detoxification research of M. officinalis was carried out. Thereby improving the yield and quality of M. officinalis, which is beneficial to the protection of M. officinalis species. It is of great practical significance to provide technical support for quality resources and the factory-based seedlings of M. officinalis. Using the stem segments as the explants, an efficient and stable M. officinalis tissue rapid propagation system was established, and suitable plant regeneration methods were screened out. Using 1/2MS as the basic medium, M. officinalis stem axillary buds were used to induce clustered buds to obtain the virus-free seedlings and successfully domesticated and transplanted, the virus detection of M. officinalis tissue culture seedlings and transplanted seedlings were carried out by PCR technology. The semi-lignified stem segments as the explants were suitable to induce axillary buds, the most suitable medium was 1/2MS+6-BA 0.2 mg/L, and the axillary bud induction rate was 70%. Taking the axillary buds to induce fascicled bud, the most suitable medium was 1/2MS+6-BA 0.2 mg/L, and the fascicled bud induction rate was 86.36%. The suitable medium for rooting was 1/2MS+IBA 0.5 mg/L, with a root rate of 100%. The tissue culture seedlings were transplanted in the 1∶1 peat soil-perlite matrix for 8 days with the highest survival rate, reaching 93.3%. The reverse transcript PCR was used to determine the Cucumber mosaic virus isolate M. officinalis How (CMVMO) in the tissue cultured seedlings and transplanted seedlings, the plantlets of M. officinalis How detoxified was obtained. In this study, virus-free seedlings of M. officinalis were successfully cultivated through direct organogenesis, and an in vitro rapid propagation and regeneration system of M. officinalis was established, which would not only improve the yield and quality of M. officinalis, but also provide a reference for virus-free rapid propagation and commercial production and seedling raising of M. officinalis.

Key words: Morinda officinalis How, detoxification, rapid propagation, direct organogenesis, virus detection

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