IIvIvUSTRATIONS 



A Teosinte-MaizE Hybrid 



Text Figures 



Page 



1. Height: frequency distribution of plants in Fo 13 



2. Total leaves: frequency distribution of plants in F2 13 



3. Height of sucker: frequency distribution of plants in Fj 14 



4. Sucker index : frequency distribution of plants in F, 14 



5. Circumference index: frequency distribution of plants in Fo 16 



6. Nodes without branches: frequency distribution of plants in Fj 15 



7. Nodes above: frequency distribution of plants in Fj 17 



8. Nodes above on third: frequency distribution of plants in F2 18 



9. Nodes on third: frequency distribution of plants in Fj 18 



10. Primarj^ branches: frequency distribution of plants in F2 19 



11. Secondary branches: frequency distribution of plants in Fo 19 



12. Secondary index: frequency distribution of plants in F2 20 



13. Tassel branches on third: frequency distribution of plants in F3 20 



14. Male branch index: frequency distribution of plants in F2 21 



15. Male secondaries: frequency distribution of plants in Fj 22 



16. Double male alicoles: frequency distribution of plants in F2 23 



17. Mixed alicoles: frequency distribution of plants in Fo 23 



18. Single female alicoles: frequency distribution of plants in F2 24 



19. Double female alicoles: frequency distribution of plants in F2 24 



20. Alicole index: frequency distribution of plants in Fo 25 



21. Nodes silking on third: frequency distribution of plants in F2 25 



22. Nodes silking index: frequency distribution of plants in F2 26 



23. Prophyllary spikes: frequency distribution of plants in Fg 26 



24. Length of prophyllary: frequency distribution of plants in F2 27 



25. Rows in central spike: frequency distribution of plants in Fo 27 



26. Rows of alicoles: frequency distribution of plants in Fj 28 



27. Position of best spike: frequency distribution of plants in Fj 29 



28. Number of alicoles: frequency distribution of plants in Fj 29 



29. Number of suckers: frequency distribution of plants in F2 30 



30. Branch silking first: frequency distribution of plants in F2 31 



31. Days to pollen: frequency distribution of plants in F2 31 



32. Pollen to silk: frequency distribution of plants in F2 32 



^2, • Length of intemode on third : frequency distribution of plants in F2 32 



Plates 



1. A. — General view of F2 plants of teosinte-maize hybrid. B. — Fj plants of 



teosinte-maize hybrid, showing diversity in size and season 38 



2. Teosinte-maize hybrid: A. — F2 plant No. 36. B. — F2 plant No. 49 38 



3. Teosinte-maize hybrid: Pistillate inflorescence of Fg plant No. 36, shown 



in Plate 2, A 38 



4. Pistillate inflorescence of plant No. 49, shown in Plate 2 , B 38 



5. Pistillate inflorescences from plant No. 94, illustrating an intermediate 



type of inflorescence 3^ 



V 



