Commercial Uses Of Plant Hormones Flashcards
What are plant hormones used for in agriculture and horticulture?
To alter plant growth, increase yield, obtain desirable features, and lower costs
What is auxin used for as a weed killer?
Weedkillers are synthesized to only affect broad-leaved plants, causing rapid growth and death of the weed
How does auxin function in rooting powders?
It is applied to cuttings to promote root growth and rapid development of new plants
What is tissue culture in relation to auxin?
A method of cloning plants using cells in a nutrient medium with added auxins to form roots and shoots
What role do gibberellins play in seed germination?
They break seed dormancy to allow germination
How do gibberellins affect fruit growth?
They allow fruits to grow heavier and larger, increasing yields
What effect do gibberellins have on flowering plants?
They encourage flowering plants to flower at a faster rate
What is the role of ethene in fruit ripening?
It controls ripening by stimulating enzymes and cell division
Why is fruit picked when it is not ripe?
To prevent bruising and damage during transport
What happens when fruit is exposed to ethene and warmer temperatures?
It ripens, reducing wastage and ensuring more fruit is suitable for sale
Fill in the blank: Gibberellins allow seed germination to occur by breaking seed _______.
dormancy
True or False: Auxin is used in tissue culture to inhibit root and shoot formation.
False
