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Importance of drought and drought tolerance research on maize in Guangxi Province, China

By: Zhang Shukuan | 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 | Climatic factors | Drought resistance | Drought stress AGROVOC | Plant production | Resistance to injurious factors | CIMMYT | Zea mays AGROVOC | Plant breeding AGROVOCDDC classification: 633.153 Summary: Drought is one of the most important abiotic stresses affecting maize production in Guangxi Province, China. Area sown to maize is about 0.5 m ha annually and 90% of this is grown under rainfed conditions. Total production obtained during 1992 was 1.22 mt from 0.52 m ha, with an average yield of 2.37 t/ha. Guangxi experiences a subtropical monsoon climate with an annual rainfall of 1250 to 1750 mm. About 75% of this precipitation is received during the monsoon season from May to September. Variation in rainfall among years and regions results from fluctuations in the monsoon, and spring and fall droughts commonly occur. Most maize is either spring, summer or fall-sown. In the main production regions of western Guangxi, spring drought occurs in 60 to 90% of years, and affects germination, early plant development, silking and pollination of spring-sown maize. In eastern Guangxi fall drought occurs in 50 to 70% of years, affecting grain filling of fall-sown maize. Droughts may also be regionwide. Drought stress is also thought to limit the adoption of hybrids, especially single crosses and three-way crosses. Plastic mulching and irrigation can be used to reduce the effects of drought, but these cannot be used extensively. The development of drought tolerant hybrids represents an important method for reducing the effect of drought stress on maize production.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 X624179
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Drought is one of the most important abiotic stresses affecting maize production in Guangxi Province, China. Area sown to maize is about 0.5 m ha annually and 90% of this is grown under rainfed conditions. Total production obtained during 1992 was 1.22 mt from 0.52 m ha, with an average yield of 2.37 t/ha. Guangxi experiences a subtropical monsoon climate with an annual rainfall of 1250 to 1750 mm. About 75% of this precipitation is received during the monsoon season from May to September. Variation in rainfall among years and regions results from fluctuations in the monsoon, and spring and fall droughts commonly occur. Most maize is either spring, summer or fall-sown. In the main production regions of western Guangxi, spring drought occurs in 60 to 90% of years, and affects germination, early plant development, silking and pollination of spring-sown maize. In eastern Guangxi fall drought occurs in 50 to 70% of years, affecting grain filling of fall-sown maize. Droughts may also be regionwide. Drought stress is also thought to limit the adoption of hybrids, especially single crosses and three-way crosses. Plastic mulching and irrigation can be used to reduce the effects of drought, but these cannot be used extensively. The development of drought tolerant hybrids represents an important method for reducing the effect of drought stress on maize production.

English

9801|AGRIS 9702

Jose Juan Caballero

CIMMYT Publications Collection

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