Teosinte Distribution in Mexico - CIMMYT: Seeding innovation ...

28 Teosinte distribution in Mexico
(Llanos de San Andrés and Llanos de San
Juan). Throughout the region, teosinte
grows exclusively as a weed in cultivated
maize fields.
Balsas River Basin
A low region (average altitude 1,000 masl)
between the southern Sierra Madre and the
Neovolcanic Cordillera, between 17 and
20° N and 98 and 103° W (Fig. 10), rainfall
varies from 500 to 1,200 mm, with an
annual average of 650 mm. Temperatures
are high, with annual averages up to 28° C.
Climate is of the savanna type, hot and
dry, with dry winters (Aw).
JALISCO
Balsas
Mesa Central
Guadalajara
Uruapan
MICHOACAN
Morelia
Balsas
Chalco
GUERRERO
Palmar
Chico
104 o 104 o
MEXICO
Toluca
Figure 10. Teosinte distribution in the Balsas River Basin.
V. de Bravo
Tejupilco
Iguala
21 o
17 o
Toluca
Malinalco
D.F.
Texcoco
Chalco
100o 99o The zone includes parts of the states of
Morelos, Jalisco, Michoacán, Mexico,
Guerrero, Puebla, and Oaxaca, and
Figure 9. Teosinte distribution in the state of Mexico.
contains the largest Mexican teosinte populations, Guerrero. Teosinte is found: 1) south and east of
predominantly in mountainous areas ranging from Chilpancingo at Mazatlán, Palo Blanco, Acahuizotla,
800 to 1,900 masl. The most important regions for El Rincón and Chilapa; 2) north of Iguala at Taxco
each state are:
and Ixcateopan; 3) along the Teloloapan-Arcelia
route; and 4) east of Huitzuco at
Paso Morelos and San Miguel
Palmas (Fig. 11).
19 o 20'
19 o
Michoacán. Within this state, the
most important regions are 1) the
Cutzamala River Basin, including
Huetamo, Eréndira, Tiquicheo,
Paso Ancho, and Tzitzio; 2)
southwest of Zitácuaro from
Benito Juárez to Tuzantla (Fig. 7).
Mexico. Teosinte is found 1)
southwest of Valle de Bravo at
Colorines, Santo Tomás, Zuluapan,
Otzoloapan, Zacazonapan,
Luvianos, and Tejupilco de
Hidalgo in subhumid, semihot