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Plant hormones - Coggle Diagram
Plant hormones
Ethylene
Function
Promote fruit ripening
Induce senescence and leaf abscission
Regulate root hair development and epinasty
Applications
Used to ripen fruits post-harvest
Control flower opening and leaf drop in horticulture.
Prevents over-ripening by using ethylene inhibitors in storage
Cytokinins
Function
Promote cell division
Delay aging in plant tissues
Regulate shoot and root formation in tissue culture
Applications
Promote shoot formation in tissue culture.
Delay leaf yellowing in cut flowers.
Gibberellins
Function
Stimulate stem elongation
Break seed dormancy and promote germination.
Induce flowering and fruit development
Applications
Break seed dormancy
Increase germination rate
Increase fruit size and promote uniform growth
Stimulate bolting in biennial plants
Auxins
Function
Stimulate cell elongation
Control phototropism
Growth toward light
Gravitropism
Growth in response to gravity
Maintain apical dominance
Suppressing lateral bud growth
Promote adventitious root formation in cuttings.
Application
Used to stimulate root growth in cuttings.
Herbicides
Encourage fruit development without pollination