fruitripeening types in plant crops .ppt

fruit ripening types in plant crops

1. Cocos nucifera - coconut
Pit
Seed
Coat
Endosperm
No, this is the pit of a drupe
Is this a fruit?
Is this a nut?
No, part of the ovary wall is missing

2. Xanthium: cocklebur
George de Mestral
crozier
velvet
Victor Kiam

3. The maple fruit is both a samara and a schizocarp.
Ovary wall develops a wingOvary splits for dispersal

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http://www.rz.uni-karlsruhe.de/~db50/FOTO_-_Archiv/
Theobroma%20cacao%202.jpg
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5. Ripe Fruit
chemical
cause
The hormone______________ initiates the ripening response:
ethylene
Unripe Fruit
physical
condition
green
hard
sour
mealy
odorless
chlorophyll
pectin
acid
starch
large orgs
chemical
cause
red
soft
neutral
sweet + juicy
odor
physical
condition
anthocyanin
less pectin
neutral
sugar
small orgs
hydrolase
pectinase
kinase
amylase
hydrolases
Enzyme Produced
H
2C=CH
2
DNA
RNA

6. This same process initiated by ethylene…
…occurring in a……causes…
…layer in a pedicel…fruit abscission
…leaf blade…leaf senescence
…leaf abscission…layer in a petiole
Since a carpel (ovary) is really a leaf…these parallel
developmental events make a lot of common sense.

7. The Three Fundamental Parts…
…of a Seed
1.Seed Coat
2.Embryo
3.Storage
Tissue
1.Leaf
2.Stem
3.Root
…of an Embryo

8. Growth of the shoot
Photosynthesis and Storage
Lifting the shoot above the soil
Producing lateral roots
Penetrating the soil
These functions….…occur in this part of the embryo
Shoot apex
Cotyledon (leaf)
Hypocotyl (stem)
Radicle (root)
Root apex