JP3155907B2 - Fresh flower freshener composition containing ethylene biosynthesis inhibitor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cut flower freshness preserving composition having a synergistically enhanced action by mixing at least two components.

[0002]

2. Description of the Related Art The cause of a decrease in freshness of cut flowers is as follows.
Stem rot in the drinking water, clogged vessels, nutrient depletion, increased endogenous ethylene. For rot of stems and blockage of conduits, fungicides such as 8-hydroxyquinoline, aluminum sulfate for precipitating underwater contaminants, and various surfactants for improving landing are used to deplete nutrients. , Sugars such as sucrose are used. However, the effects vary and are not clear. On the other hand, for the increase of endogenous ethylene, 1978
STS (Ag (S ₂ O ₃ ) ₂
^3- ) [Planta 140 , 93-96, 1978] suppresses the action of ethylene, and has a clear effect on cut flowers in which ethylene such as carnation and gypsophila is the main cause of flower wilting. Show.

At present, producers use STS for many cut flowers. However, STS contains silver, which is a heavy metal, as an active ingredient, and therefore there is a concern about environmental pollution, and there is a demand for the practical use of a safe freshness-retaining agent containing no heavy metal.

The general formula (I)

Embedded image (I) wherein R ¹ represents a linear or branched lower alkyl group having 3 to 4 carbon atoms, or a halogen atom, a C _1-4 alkyl group, a hydroxyl group, an alkoxyl group, a carboxyl group Represents a phenyl group optionally substituted by an alkoxycarbonyl group, a nitro group, an amino group or a benzyloxy group, or represents a pyridyl group, or R ¹ is a thienyl group optionally substituted by a carboxyl group or an alkoxycarbonyl group. R ² and R ³
Is a hydrogen atom, a C _1-4 alkyl group, an alkoxalyl group, an alkoxyalkyl group, or a formula —C (＝ X), respectively.
—X—R ⁴ (where X is an oxygen atom or a sulfur atom,
R ⁴ represents a C _1-4 alkyl group), or an alkoxycarbonyl group or an alkylthio-thiocarbonyl group represented by the formula (I), or R ² and R ³ are taken together with the nitrogen atom to which R ² and R ³ are bonded. wherein Te heterocyclic ring 4-5 carbon atoms, for example may form a morpholino group or a piperidino group, or together with the nitrogen atom to which R ² and R ³ are attached -
N = CR ⁵ (R ⁶ ) (where R ⁵ and R ⁶ are each C
_Which represents a _1-4 alkyl group), or a sulfonyl semicarbazide derivative or a salt thereof,
The present inventors have found that it is effective as a preservative of freshness of cut flowers (WO 9505362). On the other hand, aminooxyacetic acid (abbreviated as AOA) [Hortscience 15 , 805-806, 1980], L-α- (2
-Aminoethoxyvinyl) glycine (abbreviated as AVG) [Journal of the American Society for Horticultural Science (Journal of the
American Society for Horticultural Science) 102 ,
517-520, 1977], 2-aminoisobutyric acid (abbreviated as AIB)
[Scientia Horticulture
ticulturae) 44 , 127-134, 1990] is also known to exhibit the effect of maintaining the freshness of cut flowers by inhibiting the biosynthesis of ethylene. However, the effect of mixing the sulfonyl semicarbazide derivative represented by the general formula (I) with these ethylene biosynthesis inhibitors has not been studied.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide a freshness preserving agent having an excellent effect on cut flowers.

[0006]

Means for Solving the Problems As a result of intensive studies to achieve the above object, the present inventors have found that a sulfonyl semicarbazide derivative represented by the general formula (I) or a salt thereof,
The present inventors have found that the effect of preserving freshness is synergistically enhanced by mixing with a biosynthesis inhibitor of ethylene or a salt thereof, as compared with each of the individual treatments.

That is, the present invention relates to a composition for preserving the freshness of cut flowers, comprising a sulfonylsemicarbazide derivative represented by the general formula (I) or a salt thereof and an ethylene biosynthesis inhibitor or a salt thereof as active ingredients. Examples of the ethylene biosynthesis inhibitor include, but are not particularly limited to, AOA, AVG, and AIB.

[0008] These active ingredients are used as aqueous solutions of various concentrations, and the concentration is not particularly limited since the optimum value differs depending on the kind of cut flower to be treated. The sulfonyl semicarbazide derivative represented by the general formula (I) or a salt thereof is preferably 1,1-dimethyl-
4- (phenylsulfonyl) semicarbazide is 1 × 10
^The ethylene biosynthesis inhibitor or a salt thereof is used in the range of 1 × 10 ^{−4 to} 1.0% by weight in the range of ^{−4 to} 0.1% by weight. Sulfonyl as mixing ratio of the composition semicarbazide derivatives: ethylene biosynthesis inhibitor or a salt thereof = 1: 0.5
500, preferably a sulfonyl semicarbazide derivative:
Ethylene biosynthesis inhibitor or a salt thereof = 1: 10 to 50
(However, the unit is% by weight.)

The method for using the freshness-preserving composition of the present invention includes pretreatment, post-treatment, and application to plants. As a pretreatment method, the cut end of the cut flower may be immersed in a chemical solution, preferably for 1 to 24 hours. As a post-treatment method, cut flowers may be placed in a vase or the like containing a chemical solution. As a spraying method, a chemical solution may be sprayed on the entire cut flower by spraying or the like.

The freshness-maintaining composition of the present invention may be used as a mixture with additives (bactericides, surfactants, etc.) or other commercially available freshness-maintaining agents. An additive or another commercially available freshness-preserving agent may be used later.

The flowers to which the freshness preserving agent of the present invention can be applied include carnation, delphinium, sweet pea,
Examples include cut flowers such as syrup, gypsophila, lily, freesia, tulip, and orchid, and potted plants.

[0012]

【Example】

Test Example 1 Freshness preservation effect of cut carnation flower Carnation (cultivar: Francisco) cultivated at a farmhouse in Hadano City, Kanagawa Prefecture, was cut into 10 cm lengths and 50 ml
The cut flowers were placed one by one into a tube bottle (φ3 × 12 cm) containing the liquid medicine, and then the state of the cut flowers was observed in a constant temperature room at 25 ° C. Each test group had 10 replicates. Table 1 shows the results. The number of days until flower wilting was observed was expressed as the number of days of flowering, and the number of days of extended flowering when compared with the control plot and the number of days when the number of days of flowering extended alone were added were also shown. The extension days and the addition days of the flower life are defined as follows. Extended days of flowering = Days of flowering in each treatment group-Days of flowering in control group Addition days = Extended days of flowering in groups treated with sulfonylsemicarbazide derivative at each concentration + Extended days of flowering in groups treated with each ethylene biosynthesis inhibitor

Table 1 Treatment Number of days with flower extension Extended with flower life Addition (days) Days (days) Days (days) Control group 7.8--1 ppm 1,1-dimethyl-4- (phenyl 9.4 1.6-sulfonyl) semicarbazide 10 ppm AOA 8.2 0.4-10 ppm AVG 8.6 0.8-50 ppm AIB 7.9 0.1-1 ppm 1,1-dimethyl-4 -(Phenyl 11.5 3.7 2.0 sulfonyl) semicarbazide +10 ppm AOA 1 ppm 1,1-dimethyl-4- (phenyl 11.7 3.9 2.4 Sulfonyl) semicarbazide +10 ppm AVG 1 ppm 1,1-dimethyl-4- (phenyl 11.4 3.6 1.7 Sulfonyl) semicarbazide + 50 ppm AIB

As is clear from Table 1, 1,1-dimethyl-4
-(Phenylsulfonyl) semicarbazide and AOA, or
The effect of mixing 1,1-dimethyl-4- (phenylsulfonyl) semicarbazide and AVG or 1,1-dimethyl-4- (phenylsulfonyl) semicarbazide and AIB is as follows:
Each single use showed an effect that was greater than or equal to the extension of the flower life extension days.

[0015]

According to the present invention, it is possible to provide a freshness preserving agent which maintains the freshness of cut flowers in a good state for a long period of time.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-9-12401 (JP, A) JP-A-5-229902 (JP, A) JP-A-4-49203 (JP, A) JP-A-3- 93701 (JP, A) JP-A-62-249962 (JP, A) JP-A-5-17426 (JP, A) JP-A-5-268873 (JP, A) JP-A-6-279203 (JP, A) JP-A-7-48203 (JP, A) JP-A-7-500250 (JP, A) International publication 95/5362 (WO, A1) (58) Fields investigated (Int. Cl. ⁷ , DB name) A01N 3 / 02 JICST file (JOIS) CA (STN) REGISTRY (STN)

Claims (2)

(57) [Claims] 1. A compound of the general formula (I) (I) [In the formula, R ¹ represents a linear or branched lower alkyl group having 3 to 4 carbon atoms, or a halogen atom, C _1-4
An alkyl group, a hydroxyl group, an alkoxyl group, a carboxyl group, an alkoxycarbonyl group, a nitro group, an amino group or a phenyl group which may be substituted by a benzyloxy group, a pyridyl group, or R ¹ is a carboxyl group Or a thienyl group which may be substituted by an alkoxycarbonyl group, wherein R ² and R ³ are each a hydrogen atom, a C _1-4 alkyl group, an alkoxalyl group, an alkoxyalkyl group, or a compound of the formula —C
(= X) -X -R ⁴ (where the X represents an oxygen atom or a sulfur atom, R ⁴ represents a C _1-4 alkyl group) alkoxycarbonyl group or an alkylthio represented by - represent a thiocarbonyl group, or R ² and R ³ are R ² and R
³ together with the nitrogen atom to which it is attached
5 may form a heterocycle, such as a morpholino or piperidino group, or together with the nitrogen atom to which R ² and R ³ are attached, the formula —N ＝ CR ⁵ (R ⁶ )
R ⁵ and R ⁶ each independently represent a C _1-4 alkyl group), or a salt thereof, aminooxyacetic acid, L-α-
(2-aminoethoxyvinyl) glycine and 2-amino
A fresh flower preservative composition comprising, as an active ingredient, at least one ethylene biosynthesis inhibitor selected from noisobutyric acid . 2. The method according to claim 1, wherein the sulfonyl semicarbazide derivative is 1, 2 or 3.
The composition for retaining freshness of cut flowers according to claim 1, which is 1-dimethyl-4- (phenylsulfonyl) semicarbazide.