Knowledge Center Catalog

Identification of drought and low nitrogen tolerant maize germplasm in Thailand

By: Contributor(s): Material type: TextTextPublication details: Mexico, DF (Mexico) CIMMYT : 2003Description: p. 40-41Subject(s): DDC classification:
  • 631.53 BOO
Summary: Maize farmers face numerous constraints, including drought and low nitrogen (N). Drought stress damages an estimated 3 to 22% of the planted area in Thailand annually, resulting in yield losses of approximately 129,000 to 858,000 metric tons (worth 10 to 80 million US dol1ars). Maize is usual1y susceptible to stress at flowering stage (Grant et al. 1989).The maize population KK-DR was developed from six local materials and was improved for drought tolerance in Thailand (Manupeerapan et al. 1996). Drought resulted in a reduction in growth, dry matter, and N concentration in parts of the p1ants at 29 days after emergence (DAE) (Kraokaew and Chinchet 1998). Genetic variation in response to N supply to the maize population (Lafitte and Edmeades 1994) and inbred lines (Balko and Russell 1980) was observed. An inbred-hybrid approach, as opposed to population improvement, was used to breed for such stresses.
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Conference proceedings CIMMYT Knowledge Center: John Woolston Library CIMMYT Publications Collection 631.53 BOO (Browse shelf(Opens below)) 1 Available N632399
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Maize farmers face numerous constraints, including drought and low nitrogen (N). Drought stress damages an estimated 3 to 22% of the planted area in Thailand annually, resulting in yield losses of approximately 129,000 to 858,000 metric tons (worth 10 to 80 million US dol1ars). Maize is usual1y susceptible to stress at flowering stage (Grant et al. 1989).The maize population KK-DR was developed from six local materials and was improved for drought tolerance in Thailand (Manupeerapan et al. 1996). Drought resulted in a reduction in growth, dry matter, and N concentration in parts of the p1ants at 29 days after emergence (DAE) (Kraokaew and Chinchet 1998). Genetic variation in response to N supply to the maize population (Lafitte and Edmeades 1994) and inbred lines (Balko and Russell 1980) was observed. An inbred-hybrid approach, as opposed to population improvement, was used to breed for such stresses.

English

0309|AGRIS 0301|AL-Maize Program

Juan Carlos Mendieta

CIMMYT Publications Collection


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