Orchid 【scientific name】 Cymbidium spp Orchidaceae

【1】Promote seed germination

Naphthaleneacetic acid (NAA) and 6-Benzylaminopurine (6-BA)

The seeds of Chinese orchid such as Chunlan and Hanlan are small, the seed coat cell wall is thick, and the surface covering layer is impermeable and airtight membranous material. , conventional seeding is difficult to germinate, only under sterile conditions, with the help of appropriate culture medium, can germinate, adding 5 mg/L naphthalene acetic acid and 1 mg/L 6-BA to the seeding medium can promote the rapid germination of seeds.

【2】Dwarf flowers and seedlings

Paclobutrazol

Using 20-50mg/L multi-effect medicinal solution to irrigate the roots of Phalaenopsis, 80 mL of spraying solution per plant, can safely and effectively control the height of the Phalaenopsis arrow, prolong the flowering period, and thicken the leaves, thereby improving the flower quality of Phalaenopsis . However, it should be noted that there are certain differences in the optimal concentration of different varieties.

【3】Adjust the flowering period

Gibberellic acid (GA3) and 6-Benzylaminopurine (6-BA)

Under the condition of shading and normal temperature cultivation in greenhouse, the application of 100mg/L gibberellic acid+50~100mg/L 6-BA during the flower bud formation stage, that is, in the middle and late October, can promote the early scapes of Molan and bloom 10 days earlier.

Chlorhexidine (CCC)

With the concentration of 50mg/L CCC, smearing the flower buds once every 7 days can effectively prolong the flowering period of cold orchid.

【4】Preservation of cut flowers

Silver thiosulfate

Tropical orchid cut flowers are very sensitive to ethylene, and are usually pretreated with ethylene-based agents silver nitrate or silver thiosulfate before storage and transportation or before bottle insertion. Such as Cymbidium cut flowers with a concentration of 33mg/L silver thiosulfate solution for 8-12h, can prolong the life of the bottle. Phalaenopsis is extremely sensitive to ethylene, spraying 800mgL of silver thiosulfate before flowering has the effect of keeping fresh, and the storage and transportation temperature is 18℃.

8-Hydroxyquine Citric Acid

Appropriate pretreatment is beneficial to prolong the vase life of cut Phalaenopsis. The pretreatment solution can be 200mg/L 8-hydroxyquinoline citric acid + 20g/L sucrose, or 100mg/L silver nitrate solution for 10min to prevent microbial reproduction. And block ducts and stem rotting. Pretreatment with silver thiosulfate for 30min can prolong the vase life of flowers.