plant regulators their functions, uses, applications and role.

1. PLANT GROWTH REGULATORS
SUBMITTED TO: MA’AM HUMERA
MAY 14, 2020
SUBMITTED BY:SAMAWIA IQBAL
CMS NO. 404641

2. HORMONES ACTIONS USES FUNCTIONS
AUXIN
(GROWTH
PROMOTORS)
Cell differentiation;
Cell elongation;
Ethylene production;
Inhibition of rootgrowth
Flowering;
Parthenocarpy- fruit
development;
Tropic responses.
Rooting of cuttings;
Parthenocarpy;
Flowering;
Prevention of
premature fruit drop;
Fruit setting;
Prevention of lodging
in cereals;
Tissue culture;
Weedicide.
Stimulate stem
Elongation,
Rootgrowth,
Cell differentiation,
Branching,
Fruiting,
Apical dominance,
Xylem dominance,
Retard leaf abscission.
GIBBERELLINS Promote stem
elongation;
Overcome dominancy in
seeds;
Parthenocarpy- food
development;
Fruit enlargement;
Cell division and
elongation;
Flowering;
Sex expressions.
Malting of barley;
Increasing sugar cane
yield;
Fruit production;
Seed production;
Fruit size
enlargement;
Overcome seed
dominancy;
Overcome temperature
requirements.
Promote seed and bud
germination;
Stem elongation;
Leaf growth;
Flowering;
Fruiting;
Affect root growth and
differentiation.

3. CYTOKININS Control morphogenesis;
Regulate cell cycle and
cell division;
Bud development;
Delay senescence;
Greening;
Promote cell expansion.
Cell division;
Cell differentiation;
Delay aging;
To break the
dormancy of seeds.
Cell division and
growth;
Affect root growth;
Stimulate germination;
Delay senescence.
ABSCISIC ACID
( GROWTH
RETARDANTS)
Drought resistance;
Freezing resistance;
Seed dormancy.
Antitranspirant;
Flowering;
Rooting;
Dormancy.
Inhibit growth;
Seed dormancy;
Closes stomata during
water stress.
ETHYLENE Signal transduction;
Fruit ripening;
Shootgrowth;
Flowering;
Thigmomorphogenesis
Hastening fruit
ripening;
Synchronized
Flowering and fruit
set;
Promote female sex
expression;
Inhibition of terminal
growth, to promote
lateral growth.
Promote fruit ripening;
Opposessomeauxin
effects;
Promote or inhibit
growth of roots, leaves
and flowers depending
upon species.