Anatomy of Zea mays

1. Anatomy of Zea mays Devin Nichols IB 423 5/1/06

2. General Information About Zea mays • Angiosperm • Monocot • Poaceae (Grass) Family • Monoecious • C4 Photosynthesis • Most widely planted crop in U.S. • Most economically valuable crop in U.S.

3. Zea mays General Structure Tassel Ear Adventious Roots

4. Zea mays Inflorescences Male Inflorescence (Tassel) Female Inflorescence (Ear) Style (Silk) Caryopsis (Kernel)

5. Zea mays Leaf XS Adaxial Epidermis Vascular Bundle Bundle Sheath Cell Abaxial Epidermis 600X

6. Zea mays Leaf Abaxial Epidermal Replica Vein Stomates 200X

7. Zea mays Leaf Adaxial Epidermal Replica Vein Trichomes Stomate 100X

8. Zea mays Leaf XS Major Vein Minor Vein Trichome Bulliform Cell Sclerenchyma Fibers Xylem Vessels 200X

9. Zea mays Trichomes Leaf Whole Mount Leaf XS Trichome Basal Cells 100X 200X

10. Zea mays Glandular Trichome Capitate Trichome 100X

11. Zea mays Stem Internode XS Vascular Bundles 100X Toluidine Blue-O

12. Zea mays Stem Node XS Vascular Tissue Interconnecting Bundles Vascular Bundle 200X Toluidine Blue-O

13. Zea mays Stem XS Vascular Bundle Protoxylem lacunae Metaxylem Phloem Sclerenchyma Fibers 200X Toluidine Blue-O

14. Zea mays Shoot Apical Meristem Tassel Primordium Leaf Primordia Ear Shoot 20X

15. Zea mays Root Whole Mount Root Cap Zone of Elongation Root Hair Zone 40X Toluidine Blue-O

16. Zea mays Root Apical Meristem Procambium Root Cap 200X Toluidine Blue-O

17. Zea mays Root XS Young Root Mature Root 40X Aniline Blue 200X Toluidine Blue-O

18. Zea mays Root XS Pericycle Phloem Endodermis Metaxylem Cortex Protoxylem Pith 200X Aniline Blue

19. Zea mays Root XS at Branch Root Branch Root 100X Toluidine Blue-O

20. Zea mays Root LS Pith Phloem Sieve Plate Cortex 200X Aniline Blue

21. Zea mays Germinating Pollen Grain Callose Plug Pollen Tube Pollen Grain 400X

22. Zea mays Style XS Vascular Bundles 200X Toluidine Blue-O

23. References • Esau, Katherine. 1977. Anatomy of Seed Plants Second Edition. John Wiley and Sons, Inc. New York. • Freeling, M. and V. Walbot, Editors. 1993. The Maize Handbook. Springer-Verlag. New York. • Kiesselbach, T.A. 1980. The Structure and Reproduction of Corn. University of Nebraska Press. Lincoln.