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Trigo híbrido: una experiencia comercial

By: Machado, N.G | Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Mexico DF (Mexico).
Contributor(s): Kholi, M.M.|Martino, D [eds.].
Material type: materialTypeLabelBookAnalytics: Show analyticsPublisher: La Estanzuela (Uruguay) INIA|CIMMYT : 1998ISBN: 9974-7586-0-2.Subject(s): Combining ability | Crop management | Crossbreeding | Germplasm | Research projects | Selection | Variety trials | CIMMYT | INIA | Genetic resources | Wheats AGROVOC | Yields AGROVOC | Hybrids AGROVOCDDC classification: 633.1158 Summary: Hybrid wheat program based on the male sterility system of Triticum timopheevi was developed in Argentina since 1970. The program resulted in identification of commercial products that allowed massive diffusion in 1990, reaching a total of 157 000 bags of seed of 40 kg each.||Pedigree selection method was modified that permitted an advance in the characters related with cross-fertilization, genes for restoration and combining ability. Two separate crossing blocks (for line B and line R) were developed utilizing the winter wheat germplasm from USA and Europe and the spring wheat germplasm from Argentina and CIMMYT. The use of advanced lines in combinations imply a lengthy and difficult process due to the need of a backcross system for the B lines and the selection of complete expression of restorers. Only at this stage, the combining ability of each line was identified. The commercial production of hybrids was successful not only because of the good combining ability of the lines utilized, but also because of the precise knowledge regarding their flowering habit and capacity to produce or receive pollen. The climatic conditions in the wheat sub-region IV of Argentina are optimum that allow cross fertilization due to moderate temperatures, high humidity and constant winds.||Non technical reasons were responsible for the interruption in the production of hybrid wheat program. However, experience indicates that it is a genetic resource, important to be taken into account, in those regions that provide crop production conditions similar to those described above. The availability of chemical gametocides and more efficient genetic systems will further increase the possibilities of a successful hybrid wheat program in the future.Collection: CIMMYT Publications Collection
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Item type Current location Collection Call number Copy number Status Date due Barcode Item holds
Book CIMMYT Knowledge Center: John Woolston Library

Lic. Jose Juan Caballero Flores

 

CIMMYT Publications Collection 633.1158 KOH (Browse shelf) 1 Available Q628207
Book CIMMYT Knowledge Center: John Woolston Library

Lic. Jose Juan Caballero Flores

 

CIMMYT Publications Collection 633.1158 KOH (Browse shelf) 2 Available Q633514
Total holds: 0

Hybrid wheat program based on the male sterility system of Triticum timopheevi was developed in Argentina since 1970. The program resulted in identification of commercial products that allowed massive diffusion in 1990, reaching a total of 157 000 bags of seed of 40 kg each.||Pedigree selection method was modified that permitted an advance in the characters related with cross-fertilization, genes for restoration and combining ability. Two separate crossing blocks (for line B and line R) were developed utilizing the winter wheat germplasm from USA and Europe and the spring wheat germplasm from Argentina and CIMMYT. The use of advanced lines in combinations imply a lengthy and difficult process due to the need of a backcross system for the B lines and the selection of complete expression of restorers. Only at this stage, the combining ability of each line was identified. The commercial production of hybrids was successful not only because of the good combining ability of the lines utilized, but also because of the precise knowledge regarding their flowering habit and capacity to produce or receive pollen. The climatic conditions in the wheat sub-region IV of Argentina are optimum that allow cross fertilization due to moderate temperatures, high humidity and constant winds.||Non technical reasons were responsible for the interruption in the production of hybrid wheat program. However, experience indicates that it is a genetic resource, important to be taken into account, in those regions that provide crop production conditions similar to those described above. The availability of chemical gametocides and more efficient genetic systems will further increase the possibilities of a successful hybrid wheat program in the future.

Spanish

0105|AL-Wheat Program|AGRIS 0102

Jose Juan Caballero

CIMMYT Publications Collection

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Centro Internacional de Mejoramiento de Maíz y Trigo (CIMMYT) © Copyright 2015. Carretera México-Veracruz. Km. 45, El Batán, Texcoco, México, C.P. 56237.
Lunes –Viernes 9:00 am. 17:00 pm. Si tiene cualquier pregunta, contáctenos a CIMMYT-Knowledge-Center@cgiar.org