Transcript Cucurbita (Squash) Plant Anatomy James Craig

Cucurbita (Squash)
Plant Anatomy
James Craig
Strawberry
Chirimen
Black Futsu
Patisson Strie
Galeux d'Eysines
Red Warty Thing
BACKGROUND:
Herbatious dicotyledon
Appears to be one of the first domesticated species.
The oldest remains have been found in Mexico, 8750 BC
Brought to Europe in the 1500's by Spanish and French
Explorers.
Blue Hubbard
Thousands of varieties of squash
http://www.felcopruners.net/catalog.0.html3.0.html
Cotyledon
Primary Vein
Secondary Vein
Tertiary Vein
Palisade Cells
Vein
Spongy Mesophyll
Leaf:
Dorsiventral
Net Venation pattern
2 layers of palisade cells
Cotyledon Leaf Peels
Stomata:
Raised
Anomocytic (no subsidiary cells)
Adaxial
Stomata
Wavy/Crenulated Cells
Abaxial
Paradermal section
Palisade Cells
Epidermis
Internal Phloem
Vascular Cambium
Xylem
External Phloem
Parenchyma
Darkly Stained
Companion Cells
Perivascular Fibers
Stem 2ndary growth
Stem Vascular Bundle: 10X (Toluidine Blue-O)
Open System
Bicollateral
Very small amount of 2ndary growth which is limited
to the vascular bundle
2ndary Phloem occurs only in the external phloem
10x
Transverse Stem: 20X Toluidine Blue-O
Perivascular Fibers
Epidermis
Angular Collenchyma
Xylem
Sieve Plates
Toluidine Blue-O
Methylene Blue
Stem Longitudinal Section: 10x
Sieve Plate
anubis.ru.ac.za/virtualplant/anatomy/prac1a.htm
Phloem
Stem To Root Transition: Toluidine Blue-O
Pith
cavity
4x
4x
4x
4x
10x
10x
Tetrarch
10x
4x
10x
Differentiation Zone
Adventitious Root
4x
Root Hair Zone
4x
Vascular Vein
Toluidine Blue-O 4x
Root Cap
Quiescent Center
Central Cylinder
Apical Initials
Cortex
Rhizodermis
Protoderm
10x Wholemount
Apical Meristem
Leaf Primordia
approximately 10 total
Apical Meristem 20X
Multicellular Uniseriate
Trichomes
Secretory Trichomes
Stalked Capitate Head
Capitate Head
Oil Droplet
Apertures
Exine
Pollen Grains 20x (Toluidine Blue-O)
Flower Multicellular Uniseriate Trichomes
(Toluidine Blue-O)
Yellow/Orange Pigment
10x
20x
20x
Cucurbitis Fruit Cross-section 4X
(Toluidine Blue-O)
Primary
Vascular Bundles
Filling Tissue
Phellogen
Periderm
Lenticel
20x
Bibliography
Exercise 1: the stem - variation in structure. anubis.ru.ac.za/virtualplant/anatomy/prac1a.htm
Harvest Moon Farms & Seed Company. http://www.felcopruners.net/catalog.0.html3.0.html
Cucurbitis. http://www.hort.purdue.edu/newcrop/1492/cucurbits.html
I. Agbagwa and B. Ndukwu. The value of morpho-anatomical features in the systematics of Cucurbita L. (Cucurbitaceae) species in
Nigeria. African Journal of Biotechnology. Vol. 3 pp. 541-546, October 2004
Katherine Esau. Plant Anatomy. John Wiley & Sons, Inc, New York. 1965
Richard Crang & Andry Vassilyev. Plant Anatomy. McGraw Hill Companies Inc. 2003