EP2373150A1 - Méthode de culture hors-sol pour la production d'halophytes - Google Patents
Méthode de culture hors-sol pour la production d'halophytesInfo
- Publication number
- EP2373150A1 EP2373150A1 EP09799078A EP09799078A EP2373150A1 EP 2373150 A1 EP2373150 A1 EP 2373150A1 EP 09799078 A EP09799078 A EP 09799078A EP 09799078 A EP09799078 A EP 09799078A EP 2373150 A1 EP2373150 A1 EP 2373150A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- salicornia
- cultivation
- culture
- plants
- plant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G7/00—Botany in general
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G31/00—Soilless cultivation, e.g. hydroponics
Definitions
- the present invention relates to the field of plant production. It particularly relates to an above-ground cultivation method for the production of halophilic plants.
- halophile plants also called halophytes are used in various fields as well in the field of agriculture and agri-food as in the cosmetic and medical field.
- halophytes are used in agriculture, particularly for their fodder interest (such as plants of the genus Atriplex and of the genus Salicornia, such as Salicornia bigelovii).
- halophytes are also source of multiple raw materials for cosmetic use. These raw materials are used as excipients, additives (such as preservatives, dyes) but also as active ingredients.
- halophytes include Crithmum maritimum, also called sea fennel or sea fennel, used for its diuretic properties, draining, to fight against cellulite but also used in food for its taste.
- halophilic plants have, in fact, been used in the diet of humans for many years.
- salicornium has been used for centuries in human nutrition.
- the sailors used it preserved in salt because they knew its effectiveness against scurvy, thanks to its richness in vitamin C.
- an article published in the Journal of medical chemistry, pharmacy and toxicology (Libraire Labé) relates the use of salicorne as a food substance.
- plants of the genus Salicornia are always consumed as fresh foods and condiments.
- the food samphire comes from harvesting natural stands or field crops.
- the samphire grows from March to October and can only be harvested during its vegetative growth period, that is, from May to June.
- consumer demand is neither satisfied in quantity due to a very uncertain natural production because it is dependent on the climatic conditions and the geographical location, nor in quality because of the ignorance of the species, the stages of harvest. and modes of conservation.
- the collection of natural stands also appears to be a hindrance to the development of this production. From the point of view of cultivation for food purposes, the problem of mastering the quantity and quality of the product arises.
- the inventors have now established an above-ground cultivation method making it possible to increase the rate of development of the halophytes and thus to obtain marketable halophilic plants more rapidly, especially for the agri-foodstuff.
- the inventors have surprisingly established that the passage of halophytes from the germination phase in unsalted culture medium to the growth phase in a salty culture medium at a precise moment in their culture, namely as soon as the maximum germination plateau is reached, allowed to increase the speed of development of germinated plants.
- This transfer at this particular moment makes it possible to reduce the time required to obtain plants at the marketable stage, in particular for the agri-foodstuff.
- the inventors have developed a method of cultivation above ground allowing the standardized production of halophytes of constant quality, adapted to the industrial level, fast and continuous over the year.
- the method according to the invention makes it possible to obtain plants of the genus Salicornia fulfilling the quality criteria for marketing in the agri-foodstuffs sector. only six to eight weeks of cultivation, compared with 3-4 months in the wild.
- the subject of the present invention is an off-soil cultivation method for the production of at least one halophilic plant comprising the following steps: a first step of cultivation in a non-salt medium, comprising the germination of seeds inoculated with at least one halophilic plant; a second saline culture step, comprising the growth of the sprouted plants obtained in the first culture step; the passage from the first to the second cultivation stage being carried out as soon as the maximum germination plateau is reached.
- the term "marketable stage” is intended to mean the stage of development at which the plants fulfill the quality criteria for their marketing, such as in the agri-foodstuffs sector.
- the marketable stage in agri-food corresponds to the stage at which the plants measure between 5 and 8 cm, are bright green, well waterlogged, unwooded (soft) and chemically determined. (carbohydrates, proteins, lipids, minerals and trace elements, vitamins, fatty acids, fibers, etc.), especially with biological activity.
- the term "maximum germination plateau” is understood to mean the germination plateau for which the highest germination rate has been determined and the value of which no longer varies for at least three days. This maximum germination rate is easily determinable by those skilled in the art, by simply counting the number of seeds sown and the number of seeds germinated at different given times, and the simple evaluation of the ratio of the number of seeds germinated on the number of seeds. seeded seeds.
- the maximum germination plateau and the maximum germination rate can be determined according to an average of several experiments, preferably at least 3 experiments and most preferably at least 5 experiments carried out under the same culture conditions for the same plant or mixture of plants.
- the period required to reach the maximum germination plateau may be determined for a given plant or plant mixture, associated with culture conditions given according to the simple tests described above.
- the maximum germination rate is between 85 and 100%.
- the term “above-ground culture” means the cultivation of halophilic plants in seedling terrine on a substrate which is not the natural substrate of the plants.
- this substrate is regularly irrigated by a nutritive solution that provides the mineral salts and nutrients essential for the development of the plant.
- the culture medium comprises at least one nutrient solution associated with at least one type of substrate such as potting soil, sand, pozzolana, clay balls, vermiculite and rockwool, preferably potting soil.
- nutrient solution means a liquid solution allowing the plant to live, and preferably to develop.
- nutrient solutions mention may be made of water, possibly comprising, naturally or by addition, one or more inorganic salts in the form of dissolved ions, and / or one or more plant nutritive compounds.
- the substrate and the nutrient solution may form a homogeneous medium such as MS medium, possibly in agar form.
- the unsalted medium comprises a substrate and a nutrient solution having a concentration of sodium chloride of between 0 and 0.1%, preferably between 0 and 0.05%. and most preferably 0%
- the salty medium comprises a substrate and a nutrient solution having a concentration of sodium chloride of between 0.11 and 3%, preferably between 1 and and 2% and most preferably 1.5%.
- seeded seeds is understood to mean seeds placed in contact with the culture medium under conditions favorable to their germination.
- the seeds seeded can be evenly distributed in or on the surface of the substrate.
- Said first culture step is carried out under conditions suitable for germination of said seeds.
- said second step of cultivation is carried out under appropriate conditions for the growth of said germinated plants.
- said at least one halophilic plant is selected from the group comprising plants of the genus Salicornia.
- said at least one halophilic plant is a mixture of the two species Salicornia fragilis and Salicornia obscura.
- the method is implemented under controlled conditions such as culture room including a thermostat room or a greenhouse or any enclosure to provide the conditions defined below.
- controlled conditions means culture conditions for halophilic plants, of which at least one parameter chosen from the group comprising the luminous intensity, the photoperiod, the ambient temperature, the thermoperiod, the degree of ambient humidity and salinity of the nutrient solution, is fixed, controlled and maintained to allow optimal growth of plants.
- the cultivation under controlled conditions has the advantage of optimizing the production conditions of halophilic plants and of obtaining halophilic plants throughout the year, unlike production in the wild or in the fields, which generally allows only 'a production in season.
- the first culture step and / or the second culture step can be carried out with a luminous intensity of between 40 and 300 ⁇ mol.m.sup.- 2 s.sup.- 1 , preferably between 80 and 200 ⁇ mol.m 2 .s ⁇ and most preferably between 140 and 170 ⁇ mol.m ⁇ .s "1 .
- S -1 has the advantage of optimizing the production of halophilic plants, in particular of the genus Salicornia and most preferably a mixture of two species Salicornia fragilis and Salicornia obscura.
- Said first culture step and / or the second culture step can be implemented with a daily photoperiod whose illumination phase is between 8 and 24 hours, preferably between 10 and 16 hours and most preferably 12 hours.
- the first culture step and / or the second culture step may be carried out with an ambient temperature of between 15 and 35 ° C., preferably between 18 and 30 ° C. and most preferably between 20 and 25 ° C.
- An ambient temperature of between 20 and 25 ° C has the advantage of optimizing the production of halophilic plants, in particular of the genus Salicornia and more particularly of a mixture of the two species Salicornia fragilis and Salicornia obscura.
- the first culture step can be carried out with a mean daily humidity level of between 50 and 100%, preferably between 55 and 95% and most preferably between 65 and 85%.
- 85% has the advantage of optimizing the germination of halophilic plants, in particular of the genus Salicornia, and more particularly of a mixture of the two species Salicornia fragilis and Salicornia obscura.
- the second culture stage can be implemented with a mean daily humidity level of between 0 and 50%, preferably between 10 and 40% and most preferably between 20 and 30%.
- 30% has the advantage of optimizing the growth and development of halophilic plants, in particular of the genus
- Salicornia and especially a mixture of Salicornia fragilis and Salicornia obscura.
- Average daily humidity level means an average degree of humidity over a 24-hour period.
- the culture method according to the invention can be implemented under conditions making it possible to obtain at least one halophilic plant of biological quality.
- Said method according to the invention may furthermore comprise, prior to said first step of cultivation, steps for harvesting the stock plants, obtaining and preserving the seeds at -20 ° C. maximum.
- This stage of seed conservation has the advantage of starting crops at any time of the year.
- the plants obtained according to the method according to the invention can be used both in human health, in cosmetics or in the food industry.
- plants of the genus Salicornia may be used: in cosmetics for the presence of moisturizing molecules (glycine betaine, proline, sucrose), amino acids, vitamins and for their antioxidant properties; in human health for the presence of diuretic, depurative, and resolving substances but also of molecules having a biological activity (action on the immune system, antituberculous, antileukemic, etc.); - in nutraceuticals for their richness in trace elements as well as vitamins; in agribusiness for the production of edible oil; - in human nutrition, especially as fresh food or condiments;
- the subject of the present invention is also a composition, in particular a food composition comprising at least a part of a plant obtained according to the culture method according to the invention.
- Said composition may be chosen from the group comprising food, cosmetic, pharmaceutical and nutraceutical compositions.
- the subject of the invention is also the use of at least a part of a plant obtained by the method according to the invention for the preparation of a composition chosen from the group comprising the food and cosmetic compositions. , pharmaceuticals and nutraceuticals.
- EXAMPLE 1 Above ground culture of a mixture of Salicornia fragilis and Salicornia obscura under controlled conditions, in a thermostatically controlled room.
- the cultures were carried out in a thermostatically controlled room in order to work under controlled conditions of brightness, photoperiod, temperature, thermoperiod and relative humidity.
- the culture device used consists of seedling terrines (33 x 20 x 6 cm) filled to a height of 5 cm by horticultural compost and placed in culture pans (50 x 40 x 12 cm).
- the culture tray was filled with a nutrient solution up to 1.5 cm. Daily, the solution level was completed with running water depending on the evaporation. Weekly, the bins are washed and the nutrient solution has been renewed. In addition, the cultures were sprayed with the basic nutrient solution three times a week.
- the first stage of cultivation is the seed germination phase: about nine hundred seeds of size greater than 500 ⁇ m have been distributed evenly over the surface of the seed. substrate.
- the nutrient solution during this first stage of culture consists of running water (unsalted), supplemented with a diluted commercial fertilizer (NPK 6-6-6, at a concentration of 5 ml.L "1 ).
- the luminous temperature is fixed at 140-150 ⁇ mol.m ⁇ 2 .s ⁇ 1 for a photoperiod of 12 h of light and 12 h of darkness.
- the ambient temperature of the thermostatically controlled room is fixed at 20-22 0 C so that the temperature seedling terrines should be kept at a temperature of 25 ° C (25.4 ⁇ 0.8 ° C)
- High relative humidity (75%) is required for seed germination and obtained by covering the growing tanks with mini-trays. plastic greenhouses.
- the transition from the first step of culture in unsalted medium to the second step in salted medium was carried out as soon as the maximum germination plateau was reached.
- the maximum germination plateau was determined from the maximum germination rate determined by the number of germinated seeds compared to the number of seeds seeded. Stability is concluded when this rate remains equal for 3 days in a row. In this case, the maximum germination plateau is reached 12 days after the seeds have been cultured according to the first culture stage.
- the second stage of cultivation is the growth phase of plants.
- salicornia plants grow in salty conditions and at room humidity, unsaturated, at an average of 28%.
- the salinity of the nutrient solution is fixed at 1.5%
- the plants meet the quality criteria for marketing, especially in agribusiness (non-woody, tender, shiny green) and measure between 5 and 8 cm. It should be noted that after 12 weeks of culture, the biomass produced is more important but the plants begin to lignify which makes them less tender. This method makes it possible to obtain plants fulfilling the quality criteria for marketing, particularly in the agri-food sector in only six to eight weeks of cultivation, as opposed to 3-4 months, once a year, under uncontrolled conditions. that is to say in natural environment or saline.
- EXAMPLE 2 Aboveground cultivation of a mixture of Salicornia fragilis and Salicornia obscura under controlled conditions, in a greenhouse.
- This method makes it possible to obtain plants fulfilling the quality criteria for marketing, especially in agri-foodstuffs in just eight weeks of cultivation, as opposed to 3-4 months, once a year, under uncontrolled conditions, that is, to say in natural environment or saline.
- Examples 1 and 2 demonstrate the effectiveness of the culture method according to the invention for the production of food samplers in controlled conditions and in off-season.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Botany (AREA)
- Ecology (AREA)
- Forests & Forestry (AREA)
- Cultivation Of Plants (AREA)
- Pretreatment Of Seeds And Plants (AREA)
- Hydroponics (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0858538A FR2939605B1 (fr) | 2008-12-12 | 2008-12-12 | Methode de culture hors-sol pour la production d'halophytes |
PCT/EP2009/066872 WO2010066857A1 (fr) | 2008-12-12 | 2009-12-10 | Méthode de culture hors-sol pour la production d'halophytes |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2373150A1 true EP2373150A1 (fr) | 2011-10-12 |
Family
ID=40874714
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09799078A Withdrawn EP2373150A1 (fr) | 2008-12-12 | 2009-12-10 | Méthode de culture hors-sol pour la production d'halophytes |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP2373150A1 (fr) |
CN (1) | CN102300452B (fr) |
FR (1) | FR2939605B1 (fr) |
IL (1) | IL213486A0 (fr) |
TN (1) | TN2011000297A1 (fr) |
WO (1) | WO2010066857A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2020114188A (ja) * | 2019-01-18 | 2020-07-30 | 国立大学法人 鹿児島大学 | シーアスパラガスの栽培方法 |
-
2008
- 2008-12-12 FR FR0858538A patent/FR2939605B1/fr not_active Expired - Fee Related
-
2009
- 2009-12-10 WO PCT/EP2009/066872 patent/WO2010066857A1/fr active Application Filing
- 2009-12-10 CN CN2009801556619A patent/CN102300452B/zh not_active Expired - Fee Related
- 2009-12-10 EP EP09799078A patent/EP2373150A1/fr not_active Withdrawn
-
2011
- 2011-06-10 TN TN2011000297A patent/TN2011000297A1/fr unknown
- 2011-06-12 IL IL213486A patent/IL213486A0/en unknown
Non-Patent Citations (2)
Title |
---|
None * |
See also references of WO2010066857A1 * |
Also Published As
Publication number | Publication date |
---|---|
IL213486A0 (en) | 2011-07-31 |
CN102300452B (zh) | 2013-11-20 |
FR2939605A1 (fr) | 2010-06-18 |
FR2939605B1 (fr) | 2011-02-11 |
TN2011000297A1 (fr) | 2012-12-17 |
CN102300452A (zh) | 2011-12-28 |
WO2010066857A1 (fr) | 2010-06-17 |
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