Plant protecting and regulating compositions – Compositions for preservation or maintenance of cut flowers – Containing organic nitrogen compounds
Patent
1996-02-13
1998-03-03
Kumar, Shailendra
Plant protecting and regulating compositions
Compositions for preservation or maintenance of cut flowers
Containing organic nitrogen compounds
504114, 546293, 549 2, 549 65, A01N 302, C07D21316, C07D33310
Patent
active
057234078
DESCRIPTION:
BRIEF SUMMARY
This application is a 371 of PCT/US94/01358 filed Aug. 16, 1994.
TECHNICAL FIELD
This invention relates to a preservative composition or agent for preserving the freshness of flower petals of cut flowers, which contains a known or novel sulfonylsemicarbazide derivative as the effective ingredient. Further, the present invention also relates to the novel sulfonylsemicarbazide derivatives which have such activities that can preserve the freshness of flower petals of the cut flowers and can extend or prolong the vase life of the cut flowers where the flower petals thereof can be worthy of being appreciated. In addition, the present invention pertains to a method for preserving the freshness of flower petals of a plant capable of blooming ornamental flowers, in other words, the flower petals of a plant of the florist crop, which method comprises treatment with said sulfonylsemicarbazide derivatives.
Described specifically, the sulfonylsemicarbazide derivatives which are useful according to the present invention in the treatment for preserving the freshness of the flower petals are such sulfonylsemicarbazide derivatives having the following general formula (I): ##STR2## wherein R.sup.1 represents a linear or branched, lower alkyl group having 3 to 4 carbon atoms, or a phenyl group which may optionally be substituted by one or more halogen atoms, lower alkyl groups, hydroxyl groups, alkoxyl groups, carboxyl groups, alkoxycarbonyl groups, nitro groups, amino groups or benzyloxy groups, or R.sup.1 represents a pyridyl group, or a thiophenyl group which may optionally be substituted by one or more carboxyl groups or alkoxycarbonyl groups, and R.sup.2 and R.sup.3 each independently represents a hydrogen atom, a lower alkyl group, an alkoxalyl group, an alkoxyalkyl group, an alkoxycarbonyl group or an alkylthio-thiocarbonyl group represented by the formula --C(X)--X--R.sup.4 where X means an oxygen atom or a sulfur atom and R.sup.4 means a lower alkyl group, or R.sup.2 and R.sup.3 may form a heterocyclic ring having 4 to 5 carbon atoms, as taken with the nitrogen atom to which R.sup.2 and R.sup.3 are bonded, or R.sup.2 and R.sup.3 may form a group of the formula --N.dbd.CR.sup.5 (R.sup.6) where R.sup.5 and R.sup.6 mean lower alkyl groups, respectively, as taken with the nitrogen atom to which R.sup.2 and R.sup.3 are bonded, or salts of said derivatives.
BACKGROUND ART
Causes for which the freshness of flower petals of the cut flowers can be reduced or lost, include, for example, such bacterial decay or rotting and blockage of the vessels occurring in the stem portions of the cut flowers in the vase water where the cut flowers are soaked, as well as, full exhaustion of nutrients, and an increased concentration of ethylene, an aging hormone, inside the plant bodies of the cut flowers, or others. To prevent the bacterial decay and blockage of the vessels in the stems of cut flowers, it has been proposed to add a bactericide, such as 8-hydroxyquinoline, or aluminum sulfate to the vase water. The addition of aluminum sulfate is made to cause settling of the particles of dirts as formed in the vase water. It has also been proposed to add various surfactants to the vase water in order to enhance the water uptake by the cut flowers. To avoid full exhaustion of nutrients in cut flowers, it is known that a saccharide such as sugar is added to the vase water. The effects of these additives can however be varying and are not always attainable to a noticeable extent.
On the other hand, in order to prevent an increase in the concentration of ethylene which is an aging hormone of plants, there is proposed the method which was discovered by Veen et al. in 1978 in the Netherlands and involves a treatment with silver thiosulfate (abbreviated as "STS") ("Planta", 140, pp. 93-96 (1978)). STS is known to inhibit the action of ethylene and hence to clearly exhibit its effects that can preserve or retain the freshness of flower petals for a prolonged period for such cut flowers of carnation, perennial baby's breadth or the like, wher
Iwata Michiaki
Kurihara Kunihiko
Matsumoto Kuniomi
Midou Naoki
Tachibana Kunitaka
Kumar Shailendra
Meiji Seika Kaisha Ltd.
LandOfFree
Sulfonylsemicarbazide derivatives and preservative composition f does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Sulfonylsemicarbazide derivatives and preservative composition f, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sulfonylsemicarbazide derivatives and preservative composition f will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2247452