Leaf Development - Plant Ontology Wiki

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It may occur by: SEPARATION – Dissolution of middle lamella – Dissolution of middle lamella and primary wall – Mechanical breakage involving non-living elements è Changes into cell wall and in the enzymes which dissolve pectins, hemicellulose, cellulose, etc.
• In plants there several hormones that promote and inhibit plant growth – Growth promoters: auxins, gibberellins, cytokinins. – Growth inhibitors are ethylene and abscisic acid. – Hormone levels depend on the day length (photoperiod) along with the temperatures • Spring's lengthening days and warming temperatures cause trees to produce lots of growth-promoting hormones • Fall's shortening days and cooling temperatures produce growth-inhibiting hormones.
Page 1 and 2: Leaf Development • Several merist
Page 3: M E R I S T E M S
Page 7 and 8: • 3- EXPANSION & SECONDARY MORPHO
Page 9 and 10: This is a vegetative shoot apical m
Page 11 and 12: REGIONS OF THE VEGETATIVE SHOOT MER
Page 13: EXAMPLE cz: central zone pz: periph
Page 16 and 17: 1- Apical meristem 2- Anticlinal di
Page 18 and 19: 1- The initially formed bulge furth
Page 20: What happens with grasses? • In s
Page 25: Xanthium (Compositae) 1- Leaf primo
Page 29 and 30: • Palisade tissue differentiates
Page 31 and 32: VENATION PATTERNS Dicot: initiated
Page 33 and 34: SENESCENCE AND ABSCISSION (PROMISE:
Page 35 and 36: • The activity of the leaves and
Page 37 and 38: ABSCISSION IS… Basically, it is a
Page 41: One example: Phaseolus 1- Abscissio
Page 45: Abscission process…new version ba

Leaf Development - Plant Ontology Wiki

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