JPH05229902A - Freshness preservative for cut flower - Google Patents

Abstract

(57) [Summary] [Object] To provide a freshness-retaining agent having an excellent effect on cut flowers. A freshness-retaining agent for cut flowers, which comprises cispropenylphosphonic acid or a salt thereof and alpha-aminoisobutyric acid or a salt thereof as active ingredients.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a freshness-retaining agent for cut flowers.

[0002]

2. Description of the Related Art Heretofore, as a freshness-retaining agent for cut flowers, one containing silver thiosulfate as a main component has been known as a pretreatment agent used in production areas such as farmers. However, since this agent contains silver, which is a heavy metal, there is a concern about environmental pollution. As post-treatment agents used in retail stores and ordinary households, bactericides such as 8-hydroxyquinoline sulfate [Agricultural Products Distribution Technical Report, p.110-112 (1987)] are known. However, there is nothing that shows a remarkable effect. Under such circumstances, the development of new freshness-retaining agents is currently desired.

It is known that cispropenylphosphonic acid and its salts are effective as a freshness-retaining agent for plants.
In addition, alpha aminoisobutyric acid is also disclosed in Scientia Hoticulture.
rticulturae) Vol. 44, p.127-134 (1990), it is reported that the freshness of carnation is retained. However,
The effects of the combination of these substances have never been investigated.

[0004]

An object of the present invention is to provide a freshness-retaining agent having an excellent effect on cut flowers.

[0005]

Means for Solving the Problems The inventors of the present invention have conducted extensive studies to achieve the above objects, and as a result, by using cispropenylphosphonic acid or a salt thereof and alpha aminoisobutyric acid or a salt thereof in combination, respectively. It is found that the freshness-retaining effect is enhanced as compared with the case of using any one of them, and that the combination thereof is particularly superior to the combination of any one of these with other compounds such as 8-hydroxyquinoline sulfate. The present invention has been completed.

That is, the freshness-retaining agent for cut flowers of the present invention is characterized by containing cispropenylphosphonic acid or a salt thereof and alpha aminoisobutyric acid or a salt thereof as active ingredients. The present invention will be described in detail below. The salts of cispropenylphosphonic acid and alpha aminoisobutyric acid used in the present invention are not particularly limited, but alkali metal salts such as sodium salts and potassium salts are preferable.

The freshness-retaining agent of the present invention is usually used as a mixed solution of cispropenylphosphonic acid or a salt thereof and alpha aminoisobutyric acid or a salt thereof. The concentration of each substance in the mixed solution is not particularly limited because the optimum value varies depending on the target cut flowers, but generally, 0.001-1% (by weight) of cispropenylphosphonic acid or a salt thereof and alpha-amino-iso Butyric acid or its salt 0.001-2
% (Weight), preferably 0.005 to 0.2% (by weight) of cispropenylphosphonic acid or a salt thereof and 0.005-0.5% (by weight) of alpha aminoisobutyric acid or a salt thereof. Be done.

[0008] Cispropenylphosphonic acid and its salt and alpha aminoisobutyric acid and its salt can be used by dissolving them in a solvent capable of dissolving these substances such as water or alcohol. It is preferably used as an aqueous solution. As cut flowers to which the freshness-retaining agent of the present invention can be applied, carnation, sweet pea, gypsophila,
Examples include gypsophila, lily, delphinium, orchid, stock, statice, gladiolus, tulip, and rose. Examples of the method of using the freshness-retaining agent of the present invention include a method of immersing the cut end of a target cut flower in a solution containing the freshness-retaining agent. At this time, it may be left soaked in the freshness-keeping agent (post-treatment), or may be soaked once in the freshness-keeping agent and then replaced with tap water (pre-treatment). When used for pretreatment, the immersion time is preferably about 1 to 20 hours. Further, the solution containing the freshness-maintaining agent may be sprayed or applied to the leaves and flowers of the cut flowers. If necessary, other known freshness-retaining agents may be added to the extent that the effects of the above-mentioned active ingredients are not impaired.

[0009]

The present invention will be described in more detail with reference to the following examples, but the scope of the present invention is not limited to these examples.

[0010]

Example 1 Carnation (variety: coral) immediately after harvesting was drained to a length of 30 cm, and one cut flower was placed in each 61 ml test tube containing 30 ml of each solution described in Table 1,
After that, the degree of wilting was observed daily. The results are shown in Table 1 as the number of days until the day before the petal wilting starts (the number of days the flower lasts), and for the test plots 2 to 7, the number of days the flower is extended compared to the tap water treatment of the test plot 1 is also shown. It was

As is clear from Table 1, 0.05% (weight)
When the combination of cis-propenylphosphonic acid and 0.05% (weight) of alpha-aminoisobutyric acid was used, the flower-extending days (8.6) were calculated as follows. Test group 3): 4.0, the latter (test group 5): 1.4] was the effect of addition (5.4) or more.

[0012]

[Table 1]

[0013]

[Example 2] Carnation (variety: coral) immediately after harvesting was drained to a length of 30 cm, and one cut flower was placed in a 61 ml test tube containing 30 ml of each solution described in Table 2,
After that, the degree of wilting was observed daily. The results are shown in Table 2 as the number of days until the day before the petal wilting (the number of days the flower lasts).

As shown in Table 2, cis-propenylphosphonic acid and alpha-aminoisobutyric acid are not found in combination with other known compounds (8-hydroxyquinoline sulfate) only when both are combined. It has the effect of extending the number of days that flowers last.

[0015]

[Table 2]

[0016]

INDUSTRIAL APPLICABILITY According to the present invention, cis-propenylphosphonic acid or a salt thereof, which has already been known to be effective as a freshness-retaining agent for cut flowers, is used in combination with alpha aminoisobutyric acid or a salt thereof, so that each of them can be used alone. Or, it is possible to provide a freshness-retaining agent for cut flowers, which has a significantly increased freshness-retaining effect as compared with a combination with other compounds,
It can suppress the withering of petals and extend the viewing period.

Claims (1)

[Claims] 1. A freshness-retaining agent for cut flowers, which comprises cispropenylphosphonic acid or a salt thereof and alpha-aminoisobutyric acid or a salt thereof as active ingredients.