Table 1. Maize biogeographic regions for Mexico, associated races and proportion of all collections of the race within the region between 1943 and 2010.
| Region number | Region name | Name in Spanish | Characteristic races | Other races with significant presence | ||
| Name | Collections of race (%) | Name | Collections of race (%) | |||
| 1 | Chiapas Complex | Complejo de Chiapas | Comiteco | 95.7 | Olotillo | 19.2 |
| Olotón | 78.6 | Tepecintle | 15.0 | |||
| Tehua | 95.3 | Tuxpeño | 33.4 | |||
| Vandeño | 20.2 | |||||
| Zapalote Grande | 38.6 | |||||
| 2 | Oaxacan Valleys and Sierras | Valles y Sierras de Oaxaca | Bolita | 79.1 | Nal Tel | 24.2 |
| Chiquito | 87.1 | Olotillo | 32.8 | |||
| Coscomatepec | 66.1 | Olotón | 16.6 | |||
| Mushito | 44.7 | Zapalote Chico | 25.4 | |||
| Serrano Mixe | 97.4 | Zapalote Grande | 28.9 | |||
| Tepecintle | 58.5 | |||||
| 3 | Western Costal Mountain Range | Cordillera Costera de Occidente | Ancho | 38.3 | Celaya | 17.5 |
| Bofo | 49.9 | Jala | 15.0 | |||
| Complejo Serrano de Jalisco | 88.9 | Maíz Dulce | 16.4 | |||
| Conejo | 66.7 | Reventador | 35.7 | |||
| Elotero de Sinaloa | 52.1 | Tabloncillo | 27.2 | |||
| Mushito | 40.1 | Tabloncillo Perla | 16.7 | |||
| Pepitilla | 61.6 | |||||
| Vandeño | 40.4 | |||||
| Zamorano Amarillo | 62.3 | |||||
| 4 | Central Plateau | Mesa Central | Ancho | 51.4 | Coscomatepec | 21.2 |
| Arrocillo Amarillo | 55.0 | Maíz Dulce | 20.0 | |||
| Cacahuacintle | 93.8 | Pepitilla | 25.2 | |||
| Chalqueño | 75.2 | |||||
| Cónico | 97.6 | |||||
| Elotes Cónicos | 70.9 | |||||
| Palomero Toluqueño | 90.0 | |||||
| 5 | Northwest Sierras | Sierras del Noroeste | Chapalote | 100.0 | Maíz Dulce | 16.4 |
| Dulcillo del Noroeste | 88.5 | Vandeño | 11.1 | |||
| Elotero de Sinaloa | 47.9 | |||||
| Jala | 85.0 | |||||
| Maíz Blando de Sonora | 100.0 | |||||
| Onaveño | 78.5 | |||||
| Reventador | 60.7 | |||||
| Tablilla de Ocho | 45.2 | |||||
| Tabloncillo | 54.8 | |||||
| Tabloncillo Perla | 81.9 | |||||
| 6 | Chihuahuan Canyons | Cañones Chihuahuenses | Apachito | 83.1 | Tablilla de Ocho | 16.7 |
| Azul | 93.5 | |||||
| Cristalino de Chihuahua | 90.3 | |||||
| Gordo | 66.7 | |||||
| 7 | Northern Plateau | Mesa del Norte | Cónico Norteño | 70.2 | Celaya | 18.4 |
| Ratón | 71.6 | Gordo | 17.4 | |||
| Tuxpeño Norteño | 82.2 | Tablilla de Ocho | 26.2 | |||
| 8 | Gulf and Isthmus Plains | Planicies del Golfo e Istmo | Olotillo | 38.6 | Arrocillo Amarillo | 16.7 |
| Tuxpeño | 19.7 | Ratón | 18.1 | |||
| Zapalote Chico | 61.6 | Zapalote Grande | 18.1 | |||
| 9 | Yucatan Peninsula | Península de Yucatán | Dzit-Bacal | 86.9 | Tuxpeño | 19.7 |
| Nal-Tel | 65.9 | |||||
| 10 | Bajio | Bajío | Celaya | 35.9 | Zamorano Amarillo | 24.7 |
| Maíz Dulce | 30.9 | |||||
| 11 | Baja California and Northwest | Baja California y Noroeste | none | none | ||