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Topic 7 : Plant Growth & Delevelopment and Plant Hormone, SIGMOID…
Topic 7 : Plant Growth & Delevelopment and Plant Hormone
TRANSITIONAL
may display characteristics features of both stages
wait the suitable time for flowering
4.MATURITY
fertilization
union of male and female gamete
pollination
ceoss pollination, self pollination
fruit formation and development
ovule become seed
ovary become fruit
fruit ripening
physiological changes
colour, flavour, texture,aroma
flower induction
vernalization
photoperiodism
long day plant
day neutral plant
short day plant
JUVENILE
vegetative growth
5.SENESCENCE
yeild decrease
plants weak
cell and tissue degenerate
EMBRYONNIC
a supply of nutrients
a seed coat
an embryo
radicle (root)
hypocotyl (stem)
cotyledon (storage food)
PLANT HORMONES
gibberellic acid (GA)
stuimulate stem elongation
induce parthenocarpic in fruit development
breaks seed dormancy
site of production
shoot tips
root tips
embryos
ethylene
promotes fruit ripening and flowering
promotes senesceces and leaf abscission
promotes femaleness in plants
site of production
ripening fruits
aging flowers
germinating seed
wounded tissues
cytokinin
cell devision
delay aginig and death
stimulate lateral bud growth
site of production
in meristemic cell
embryos
abscisis acid (ABA)
inhibits shoot growth
promotes dormancy in seed and buds
promotes dwarf plant
stimulates the closure of stomata
site of production
leaves
stems, and green fruits
auxin
promotes stem growth, stimulate root growth
delay leaf senescence, promotes flowering and fruiting development
regulate phototropism, gravitropism, thigmotropism
site of production
shoot tips
terminal buds
young leaves and flowers
SIGMOID CURVE
GROWTH
plant size
increases the number and size of leaves and stems
plant height
DEVELOPMENT
change in function
changes in degree or complexity that accompanies to growth
changes in shape
typical seed
