Seeds

Июль 22, 2022

Содержание

2. Mustard seed Black mustard الخردل الاسود Origin: dried ripe seeds of Brassica nigra Family: cruciferae (Brassicaceae)
3. Mustard seed Black mustard White mustard
4. Q ? Hilum is adjacent to Micropyle and No raphe, Ovule ???? Campylotropous: ovule bent upon
5. T-Cut in Black mustard Radicle 2 cot. Orthoplocus: Two cotyledons are folded along their midrib and
6. Mustard seed White & Black mustard Hilum & micropyle Radicle 2 cotyledons Testa
7. Sclerieds Giant cell Black Mustard White Mustard T. S. Epidermis Pigment layer Collenchyma Aleurone layer ,
8. Powder of Black mustard Color : Pale brown. Odor : slight odor when dry and become
9. Powder of Black mustard Polygonal Reticulations Fragments of seed coat showing polygonal reticulations
10. Family Cruciferae (Brassicaceae) Spherical seed. Orthoplocous embryo Campylotropous ovule. Rich in sulfur compounds
11. Histochemical tests of Black Mustard Sudan III red (due to fixed oil in embryo) Picric acid
12. Nutmeg seeds بذور جوز الطيب Dried ripe seeds of Myristica fragrans Houtt family Myristicaceae , deprived
13. Groove ( position of raphe ) Position of H. & M. Position of Chalaza ( Anatropous
14. Ovoid with numerous small dark brown points , lines and reticulately-furrowed Greyish brown color. Strong aromatic
15. Outer perisperm Inner perisperm endosperm embryo L - cut T - cut Perisperm : present ,
16. Powder Nutmeg Color : reddish yellow to reddish brown Odor : strong aromatic and characteristic Taste
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Mustard seed
Black mustard
الخردل الاسود
Origin: dried ripe seeds of Brassica nigra

Family: cruciferae (Brassicaceae)

White mustard

الخردل الابيض
Origin: dried ripe seeds of Brassica alba
Family : cruciferae (Brassicaceae)

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Mustard seed
Black mustard
White mustard

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Q ? Hilum is adjacent to Micropyle and No raphe,
Ovule

????

Campylotropous: ovule bent upon itself, funicle, chalaza & micropyle close to one another, no raphe & nucellus curved.

Mustard seed

Hilum

Micropyle

Chalaza

Funicle

Hilum & micropyle

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T-Cut in Black mustard
Radicle
2 cot.
Orthoplocus: Two cotyledons are folded along their

midrib and radicle is bent, facing one cotyledon.

Q : Embryo ???

Midrib

Testa

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Mustard seed
White & Black mustard
Hilum & micropyle
Radicle
2 cotyledons
Testa

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Sclerieds
Giant cell
Black Mustard
White Mustard
T. S.
Epidermis
Pigment layer
Collenchyma
Aleurone layer , aleurone grains contain

globoids)

Reason for polygonal reticulations

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Powder of Black mustard
Color : Pale brown.
Odor : slight odor when

dry and become pungent when crushed with H2O
Taste : bitter , rapidly becomes pungent

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Powder of Black mustard
Polygonal Reticulations
Fragments of seed coat showing polygonal reticulations

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Family Cruciferae (Brassicaceae)
Spherical seed.
Orthoplocous embryo
Campylotropous ovule.
Rich in sulfur compounds

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Histochemical tests of Black Mustard
Sudan III red (due to fixed oil

in embryo)
Picric acid Yellow (due to protein in embryo)
Ruthenium red rose red (due to mucilage in epidermis)

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Nutmeg seeds بذور جوز الطيب
Dried ripe seeds of Myristica fragrans Houtt family

Myristicaceae , deprived of its arillus and testa and with or without a thin coat of lime.

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Groove
( position of raphe )
Position of H. & M.
Position of

Chalaza

( Anatropous !!! )

Removal of testa and arillus

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Ovoid with numerous small dark brown points , lines and

reticulately-furrowed
Greyish brown color.
Strong aromatic characteristic odor.
Aromatic pungent taste.

Description of the Kernel
Kernel = perisperm + endosperm + embryo.

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Outer perisperm
Inner perisperm
endosperm
embryo
L - cut
T - cut
Perisperm : present , thin

dark brown penetrating to the endosperm giving marbelled or ruminated appearance.
Endosperm : present , greyish brown

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Powder Nutmeg
Color : reddish yellow to reddish brown
Odor :

strong aromatic and characteristic
Taste : aromatic pungent

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