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Maize breeding for tolerance to low soil fertility and drought in Guizhou Province

By: Hong, R | Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Mexico DF (Mexico).
Contributor(s): Edmeades, G.O.|Banziger, M.|Mickelson, H.R.|Pena-Valdivia, C.B [eds.].
Material type: materialTypeLabelBookAnalytics: Show analyticsPublisher: Mexico, DF (Mexico) CIMMYT : 1997ISBN: 968-6923-93-4.Subject(s): Breeding methods | China | Crossbreeding | Drought resistance | Drought stress AGROVOC | Nitrogen content | CIMMYT | Zea mays AGROVOC | Soil fertility AGROVOC | Hybrids AGROVOC | Plant breeding AGROVOCDDC classification: 633.153 Summary: Maize is one of the main cereal crops in Guizhou Province, and plays an important role in farmers' lives and in farm income. However, yield is very low, with drought and low soil fertility among the principal factors influencing maize production. Two years ago we began a special program working with drought and low soil fertility. Three basic methods for developing tolerant hybrids have been used in our breeding program. They include: using crosses of lines from local populations x temperate lines; tropical lines x temperate lines; and developing broadly adapted three-way, double, and topcross hybrids. These methods have lead to the release of some hybrids tolerant to drought or low soil fertility. In 1993, the low N-tolerant population 'Across 8328-BN' was introduced from CIMMYT. We have begun to improve it per se and use it for inbred line development. In the future, our drought and low soil fertility program will get increased attention with the objectives: 1) to adapt high yielding germplasm to the stress conditions in Guizhou Province, 2) to develop inbred lines tolerant to drought and low soil fertility, and 3) to identify hybrids with broad adaptation to the highly variable growing conditions in Guizhou, concentrating on three-way and double cross hybrids.Collection: CIMMYT Publications Collection
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Conference proceedings CIMMYT Knowledge Center: John Woolston Library

Lic. Jose Juan Caballero Flores

 

CIMMYT Publications Collection 633.153 EDM (Browse shelf) 1 Available W624179
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Maize is one of the main cereal crops in Guizhou Province, and plays an important role in farmers' lives and in farm income. However, yield is very low, with drought and low soil fertility among the principal factors influencing maize production. Two years ago we began a special program working with drought and low soil fertility. Three basic methods for developing tolerant hybrids have been used in our breeding program. They include: using crosses of lines from local populations x temperate lines; tropical lines x temperate lines; and developing broadly adapted three-way, double, and topcross hybrids. These methods have lead to the release of some hybrids tolerant to drought or low soil fertility. In 1993, the low N-tolerant population 'Across 8328-BN' was introduced from CIMMYT. We have begun to improve it per se and use it for inbred line development. In the future, our drought and low soil fertility program will get increased attention with the objectives: 1) to adapt high yielding germplasm to the stress conditions in Guizhou Province, 2) to develop inbred lines tolerant to drought and low soil fertility, and 3) to identify hybrids with broad adaptation to the highly variable growing conditions in Guizhou, concentrating on three-way and double cross hybrids.

English

9801|AGRIS 9702

Jose Juan Caballero

CIMMYT Publications Collection

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