Cyclocarya paliurus cultivation method for increasing content of secondary metabolites in cyclocarya paliurus leaves

A technology of secondary metabolites and cultivation methods, which is applied in the field of C. pennywort cultivation for increasing the content of secondary metabolites in p. pennywort leaves, can solve problems such as affecting the health care value of p. pennywort, and achieves improved medicinal quality and improved Effects of Secondary Metabolite Content

Active Publication Date: 2019-12-13
ANHUI AGRICULTURAL UNIVERSITY
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Problems solved by technology

The applicant's laboratory has found through a lot of research in the early stage that fertilization promotes the growth and biomass accumulation of Cyclocarya paliurus, but at the same time it also strongly inhibits the synthesis of nitrogen-free secondary metabolites such as flavonoids and triterpenes in its leaves, thus seriously Affect the health value of Cyclocarya paliurus

Method used

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  • Cyclocarya paliurus cultivation method for increasing content of secondary metabolites in cyclocarya paliurus leaves
  • Cyclocarya paliurus cultivation method for increasing content of secondary metabolites in cyclocarya paliurus leaves
  • Cyclocarya paliurus cultivation method for increasing content of secondary metabolites in cyclocarya paliurus leaves

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Embodiment 1

[0025] A kind of Cyclocarya paliurus cultivation method of improving the content of secondary metabolites in the leaves of Cyclocarya paliurus of the present embodiment comprises the following steps:

[0026] (1) At the beginning of August, the 3-10-year-old Cyclocarya plant is fertilized to promote the growth of Cyclocarya paliurus; the fertilization fertilizer adopts conventional quick-acting nitrogen fertilizer, preferably ammonium bicarbonate, and the fertilization method adopts "hole application"; During specific fertilization, each pacarya paliurana plant is applied in one-time hole (15-20cm soil layer on both sides of the plant) 200-400g ammonium bicarbonate.

[0027] (2) After 2 weeks of fertilization, use a blade to circumcise the stalk base of the Cyclocarya paliurus plant for a week, so as to cut off the phloem without injuring the xylem. figure 1 It is a plant diagram of Cyclocarya paliurus after cutting the stalk base of Cyclocarya paliurus plant with blade circum...

Embodiment 2

[0032] This example is used to illustrate the technical principle and experimental verification of increasing the content of secondary metabolites in Cyclocarya paliurus leaves in Example 1.

[0033] 1. Technical principle:

[0034] Flavonoids and triterpenoids are the main two types of secondary metabolites in Cyclocarya paliurus. They usually have a small content in plants and are synthesized in large quantities only under some special conditions, such as adversity, strong light, nutrient stress, etc. . Plants usually preferentially use the carbon fixed by photosynthesis for primary metabolism, such as the synthesis of amino acids, sugars, nucleic acids, etc., to promote growth, and only when there is an excess of photosynthetic carbon, will the excess carbon be allocated for use. in the synthesis of secondary metabolites. Example 1 Cutting off the phloem by ring cutting can block the downward transport of photosynthetic products, which can create an environment in which p...

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Abstract

The invention relates to the technical field of plant cultivation and provides a cyclocarya paliurus cultivation method for increasing the content of secondary metabolites in cyclocarya paliurus leaves. The method comprises the following steps of (1) fertilizing a cyclocarya paliurus plant in early August to promote the growth of cyclocarya paliurus; (2) 2 weeks after fertilization, using a bladefor girdling of the base part of the cyclocarya paliurus plant, and cutting off the phloem without damaging the xylem; (3) 2 weeks after girdling treatment, collecting the leaves of the cyclocarya paliurus plant. The method has the advantages that the contradiction between 'yield' and 'secondary metabolite accumulation' in the plant growth process is balanced by carrying out the girdling treatmenton the base part of the vigorous cyclocarya paliurus plant, the content of the secondary metabolites in the leaves can be obviously increased on the basis of not reducing the yield of the leaves, andthe medicinal quality of the cyclocarya paliurus leaves is thus greatly improved. The method provides technical support for cultivation and management of high-quality cyclocarya paliurus and other ligneous medicinal plants.

Description

technical field [0001] The invention relates to the technical field of plant cultivation, in particular to a method for cultivating Cyclocarya paliurus for increasing the content of secondary metabolites in Cyclocarya paliurus leaves. Background technique [0002] Cyclocarya paliurus (Cyclocarya paliurus) is a single species of Juglandaceae Cyclocarya genus, mainly distributed in the subtropical region south of the Yangtze River, and is a large deciduous tree. Cyclocarya paliurus is a rare plant with the same origin of medicine and food in my country, which has high development and utilization value. It is recorded in "Chinese Traditional Medicine Zhiyao" that its bark and leaves have the effects of clearing away heat, detoxifying, and relieving pain. For a long time, folks have used its leaves to make tea. Modern studies have also shown that Cyclocarya paliurus leaf extract contains a large number of physiologically active components, mainly including flavonoids, triterpen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G17/00A01G7/06
CPCA01G17/005A01G7/06
Inventor 邓波张小燕陈淑英刘桂华
Owner ANHUI AGRICULTURAL UNIVERSITY
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