1) What are the causes of flower deterioration?
a) Senescence related wilting of petals or yellowing of foliage
b) Stage of maturity at harvest is critical for flower deterioration
c) Wilting through excessive loss of moisture may limit storage life
d) Bruising and crushing will shorten storage life and marketability
e) Color changes is the symptoms of deterioration
f) Ethylene gas present in the cold storage will cause aging
g) Chilling at very low temperature will cause deterioration
2) What is the storage condition of flower storage?
a) Most of the flowers stored at 0-2 °C to avoid danger of more freezing
b) High Relative Humidity such as 90-95% is recommended for flower in refrigerated storage
3) What is the amount of air circulation required for flower storage?
High rate of air movement 100+liner ft/min are necessary during peak period and normally 50-75 linear ft/min is recommended.
4) How the flowers are stored in cold storage?
a) Most of the flowers and greens keep best and longer time if packed dry, without water,in containers which prevent moisture loss and stored at 0-2 °C
b) Should keep the cut flowers in refrigerated rooms to prevent loss
c) Should not store flower less than 0 °C to prevent chilling injury
d) Most of the flowers re-hydration by using water at 38-43 °C and hold at 4.4 °C, pH is 3.5 is the best for re-hydration for the period of 4-18 hours
e) Containers should be placed to allow good air conditioning
5) How the ethylene gas affect the storage life of flowers?
a) If ethylene gas present some rose drop petals or florets commonly called“shattering”
b) Some flowers will curl or wilt inward, commonly called “sleepiness”
c) Ethylene gas causes drying and bleaching of flowers
6) How to prevent flowers from ethylene gas?
a) Silver Thiosulfate anionic complex (STS) is a potent antidote to ethylene gas affects from flowers
b) 1-methylcyclopropane (EthylBloc) is also used for prevent from ethylene gas affect in flowers.
7) What are the practices for storing of flower plants?
a) Plants from temperate regions, such as snapdragons etc may be stored at 4-8 °C
b) Subtropical and tropical flowering plants, such as African violets etc should be held at 13-18 °C
c) Should avoid flowering plants in ethylene-contaminated atmosphere
d) Sensitive species should be pretreated with STS and Ethylbloc to prevent form ethylene gas
8) What are the practices for storing of Green plants?
a) Most of the green plants are shipped at a temperature of 10-30 °C and the shipping not held at more than 7 days
b) Optimum temperature for shipping is 10-24 °C
c) Temperature below 10 °C will cause chilling injury
9) How to store nursery stock in cold room?
a) Many nursery stock may be stored at temperature ranging from -0.6 to 2 °C
b) In cold storage, the roots be covered with moist peat, sawdust, or sphagnum moss
c) To avoid drying, maintain high humidity near 90%
d) Nursery stock not store with ethylene gas producing things
10) List out the storage conditions for different flowers?
a) Carnation-> 0.6 °C to 0.6 °C -> 2-4 weeks
b) Gardenia-> 0 °C to 1.1 °C -> 2 weeks
c) Lily, Easter-> 0 °C to 2 °C -> 2-3 weeks
