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Fast reproducing method for high quality seedling of dendrobium officinale

A high-quality technology of Dendrobium officinale, which is applied in the field of bioengineering, can solve the problems of difficult seed acquisition, low reproduction coefficient, and rapid deterioration of seedling quality, and achieves a unique medium composition, high transplant survival rate, and first-class seedling quality. Effect

Inactive Publication Date: 2010-06-16
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the natural reproductive rate of wild Dendrobium is low, the growth is slow, and the harvest yield is low, which is far from meeting the needs of the market. In addition, people's long-term unrestrained and indiscriminate digging have caused serious damage to wild resources.
Although there are researches on Dendrobium plant tissue culture and artificial cultivation Dendrobium technology at present, there are problems such as long seedling production cycle, high production cost, low reproduction coefficient, uneven quality, etc., and are satisfied with large-scale industrial production. Seedling rapid propagation method is not reported
[0003] At present, the explants of Dendrobium officinale tissue culture technology mostly use the fern fruit seeds of wild plants, which are sterilized and inoculated onto the induction medium to form protocorms to establish an aseptic system. Problems such as limitations, inconsistent traits, rapid degradation of seedling quality, serious aging after several subcultures, and difficulty in preserving high-quality germplasm

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 1. Materials: The unexpanded leaves of Dendrobium candidum artificially cultivated in Xishuangbanna, Yunnan Province.

[0018] 2. The method for explant induction material disinfection: use a new surgical blade to cut out the new buds of Dendrobium candidum cultivated in the greenhouse from the base, and rinse with tap water for 10 minutes. Put the explant on the ultra-clean workbench, soak it with 75% alcohol for 45 seconds, and then soak it with mercuric chloride solution with a mass percentage concentration of 1 g / L and 2 to 3 drops of Tween-80 for 8 minutes. Rinse 3 times with sterile water, peel off the outer leaves with a scalpel, then put them in mercuric chloride solution with a mass percentage concentration of 1 g / L, soak in 2-3 drops of Tween-80 for 5 minutes, rinse with sterile water for 3 Peel off the leaves layer by layer until the growth point is exposed, and inoculate on 1 / 2MS solid medium.

[0019] 3. Protocorm induction: Cut out the stem segment or sma...

Embodiment 2

[0027] The shoots of wild dendrobium in Guangxi province were used as explants. The basic operation method is consistent with embodiment 1. But its protocorm induction medium is: 1 / 2MS+6-BA5.0 mg / L+NAA1.0 mg / L+potato juice 200 g / L; protocorm subculture proliferation medium is: 1 / 2MS+6 -BA3mg / L+NAA0.5mg / L+Potato juice 200g / L+activated carbon 0.5g / L+Agar 7g / L solid medium with 1 / 2MS+6-BA3.0mg / L+NAA0 .5 mg / L + potato juice 200 g / L + activated carbon 0.5 g / L liquid medium; seedling medium: 1 / 2MS + 6-BA0.5 mg / L + NAA2.0 mg / L + potato Juice 200 g / L + activated carbon 0.2 g / L; strong seedling rooting medium: 1 / 2MS + NAA 1.5 mg / L + banana homogenate 100 g / L + sugar 30 g / L + activated carbon 0.2 g / L. After 40 days of strong seedling rooting and culture, the average number of roots is 4.8, the average plant height is 9.2 cm, and the average fresh weight is 2.8 grams. The survival rate of transplanted test-tube seedlings can reach 98%.

[0028]All the above solid mediums contain 20 g...

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Abstract

The invention provides a method for rapidly reproducing high quality germchit with dendrobium officinale, which is characterized in that: (1) folded sprouts of the dendrobium officinale are taken andsterilized, and stem apexes are inoculated to a solid culture medium to establish a non-bacterial system; (2) the stem sections or small basal tissue blocks of the young seedlings of the non-bacterialsystem are cut for inducing protocorm based on suitable hormone combination and a culture medium; (3) the protocorm is cultured alternatively on liquid and solid subculture mediums for rapid multiplication to form protocorm masses; (4) the protocorm masses are cut apart and transferred on a solid planting medium for disuniting plants into small seedlings; (5) the small seedlings are transferred on a solid strong seedling culture medium for strengthening the seedlings and taking roots to culture complete plants; (6) the non-bacterial strong seedlings are fixedly planted in suitable seedling adapting substrate to obtain the high quality germchit. The method can be used in large scale industrialization and the explants have the advantages of high soil removal efficiency, high multiplicationrate, low variability, strong germchit, good quality, high survival rate after being transplanted, strong growth potential, etc.

Description

technical field [0001] The invention relates to the technical field of bioengineering, in particular to a rapid propagation method for high-quality dendrobium officinale seedlings. Background technique [0002] Dendrobium (Dendrobium) is a large genus of Orchidaceae (Orchidaceae), including more than 1,600 plants. There are about 63 species in my country, of which more than 30 are used for medicine, mainly including Dendrobium (D. Dendrobium (D.fimbriatum), Dendrobium officinale (D.candidum), Dendrobium officinale (D.chrysanthum) and Dendrobium nobile (D.nobile), among which Dendrobium officinale is the most precious. Traditional Chinese medicine believes that Dendrobium has the functions of nourishing yin and detoxifying, promoting body fluid and quenching thirst, improving eyesight and strengthening body. Modern medical research has found that Dendrobium contains a variety of alkaloids, polysaccharides and amino acids, which have many functions of enhancing immune function,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12N5/04A01H4/00
Inventor 孔祥莹王丽斌戈振扬
Owner KUNMING UNIV OF SCI & TECH
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