Storage methods of flower seeds and fresh-keeping treatment methods of flowers

Carbohydrate: It is the main nutrient and energy source of cut flowers. It can maintain all physiological and biochemical processes of cut flowers after leaving the mother. Sugar supply from outside will participate in prolonging vase life and maintain mitochondrial structure and function in cut flower cells. By regulating transpiration and cell osmosis to promote water balance, increase water absorption. Sucrose is one of the most widely used carbohydrates in preservatives, fructose and glucose are also sometimes used. For example, in the bud opening solution, the optimum concentration of Dianthus chinensis is 10%, while chrysanthemum leaves are sensitive to sugar, generally 2%; rose leaves more than 1.5% are easy to cause leaf burn. Generally speaking, the longer the preservative treatment time for a particular cut flower, the lower the sugar concentration required, so the sugar concentration in pulse solution (shorter post-harvest treatment time) is high, the concentration in bud opening solution is moderate, and the sugar concentration in vase holding solution is low.

Bactericide: The microbial species grown in vases include bacteria, yeast and mold. After these microorganisms multiply in large quantities, they hinder the flower stem vessels, affect the water absorption of cut flowers, and produce ethylene and other toxic substances to accelerate the senescence of cut flowers. To control microbial growth, preservatives can be added to fungicides or mixed with other ingredients.

Ethylene inhibitor: Silver thiosulfate (STS) is the best ethylene inhibitor widely used in the flower industry at present. It has good mobility in plants, highly effective inhibition of ethylene synthesis in flowers, and effectively prolongs the vase life of various flowers. STS needs to be prepared with use. It is best to use the prepared solution immediately. If it is not used immediately, it should be stored away from light. It can be stored in a dark environment at 20℃ for 4 days.

Growth regulators: growth regulators used in flower preservatives, they include synthetic auxin and plant endogenous hormones. Plant growth regulators can be used alone or in combination with other ingredients. It can cause or inhibit various physiological and biochemical processes in plants, thus delaying the senescence process of cut flowers. Among them, cytokinin is the most commonly used, it can mainly inhibit ethylene production, application can be sprayed or dipped, the optimal concentration is 10000ppm, dipped in 2 minutes, such as too long, will also have adverse consequences, carnation for this treatment effect is the best.

The above is the flower preservative ingredients, and in actual production, the main ingredients of flower preservation are sugar and fungicide, and sometimes other ingredients are added. Because some cut flowers secrete harmful substances from the stem ends and submerged leaves, they will harm themselves and other flowers in the same bottle, so every once in a while, fresh preservation solution should be replaced for the vase.