Knowledge Center Catalog

Breeding Highland amilaceous maize for a hybrid program in central Peru

By: Contributor(s): Material type: TextTextPublication details: Mexico, DF (Mexico) CIMMYT : 2003Description: p. 144-145Subject(s): DDC classification:
  • 631.53 BOO
Summary: The maize crop in the centra1 Andes of Peru includes almost 99% amilaceous landraces. The climate in this zone corresponds to semi-arid conditions with 500 mm of annua1 predpitation fa1ling within a six to seven month period; many of the predpitations have less than 10 mm. Otherwise, the traditiona1 agricultura1 maize used is the open pollinated variety (OPV) because of the feasibility to retain a fraction of the product to sow the subsequent crop. Maize fields produce a mean yield of 700 to 1,000 kg/h. Since the 1990s, there has been a growing market for fresh cobs (loca1ly named "choclo"); this market needs to buy new seed each year. The prindpal problem has been that materia1 has not been developed for this purpose. A1so, the inbreeding depression resulted in dramatic slow-down characteristics with depression ranges of 25 to 60% in yield and other characteristics adversely affecting growth and development (Aguirre and Acuña 1995). This study, by the Departments of Junun and Huancavehca, was carried out between 2,800 and 3,400 masl in the centra1 Andes of Peru, to overcome this lack of information and lay the basis for an effective hybrid program.
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Conference proceedings CIMMYT Knowledge Center: John Woolston Library CIMMYT Publications Collection 631.53 BOO (Browse shelf(Opens below)) 1 Available 1S632399
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The maize crop in the centra1 Andes of Peru includes almost 99% amilaceous landraces. The climate in this zone corresponds to semi-arid conditions with 500 mm of annua1 predpitation fa1ling within a six to seven month period; many of the predpitations have less than 10 mm. Otherwise, the traditiona1 agricultura1 maize used is the open pollinated variety (OPV) because of the feasibility to retain a fraction of the product to sow the subsequent crop. Maize fields produce a mean yield of 700 to 1,000 kg/h. Since the 1990s, there has been a growing market for fresh cobs (loca1ly named "choclo"); this market needs to buy new seed each year. The prindpal problem has been that materia1 has not been developed for this purpose. A1so, the inbreeding depression resulted in dramatic slow-down characteristics with depression ranges of 25 to 60% in yield and other characteristics adversely affecting growth and development (Aguirre and Acuña 1995). This study, by the Departments of Junun and Huancavehca, was carried out between 2,800 and 3,400 masl in the centra1 Andes of Peru, to overcome this lack of information and lay the basis for an effective hybrid program.

English

0309|AGRIS 0301|AL-Maize Program

Juan Carlos Mendieta

CIMMYT Publications Collection


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