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Estimacion del potencial de rendimiento de lineas resistentes a sequia del CIMMYT en cruzamientos con diferentes probadores

By: García V., M.A | 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 | Crossbreeding | Drought resistance | Drought stress AGROVOC | Germplasm | Resistance to injurious factors | CIMMYT | Zea mays AGROVOC | Yields AGROVOCDDC classification: 633.153 Summary: Two experiments provided by ClMMYT were planted in the 1995 rainfed spring-summer season at the Ameca, Jalisco experiment station of the Biological and Agro-livestock Sciences Center, University of Guadalajara. The first experiment was a yield test of S5 topcrosses of Tuxpeño lines (TS6C1) and La Posta SeqC3 (UNG95B-5935D). The second included an isolated group of single-cross and three-way hybrids with Tuxpeño and La Posta lines (UNG95B 5934E), in both cases with drought resistance. Based on the results, one can conclude that: 1) the lines with La Posta germplasm yielded better when crossed than the lines with Tuxpeño germplasm, possibly because the testers in the first experiment (CML247 and CML254) are Tuxpeño-related materials; 2) there were no line x tester interactions, which indicates that either of the two testers (CML247 and CML 254) can be used to select for combining ability between the Tuxpeño and La Posta drought-tolerant lines, at least in this area; 3) the lines that showed the greatest tendency towards combining ability in the two experiments were La Posta SeqC3-H297-2-1-1-1-B and La Posta SeqC3-H297-2-1-1-2-B, and it is recommended that these be used immediately and intensively in hybridization programs to incorporate drought tolerance into commercial hybrids.Collection: CIMMYT Publications Collection
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Item type Current location Collection Call number Copy number Status Date due Barcode Item holds
Conference proceedings CIMMYT Knowledge Center: John Woolston Library

Lic. Jose Juan Caballero Flores

 

CIMMYT Publications Collection 633.153 EDM (Browse shelf) 1 Available 2B624179
Total holds: 0

Two experiments provided by ClMMYT were planted in the 1995 rainfed spring-summer season at the Ameca, Jalisco experiment station of the Biological and Agro-livestock Sciences Center, University of Guadalajara. The first experiment was a yield test of S5 topcrosses of Tuxpeño lines (TS6C1) and La Posta SeqC3 (UNG95B-5935D). The second included an isolated group of single-cross and three-way hybrids with Tuxpeño and La Posta lines (UNG95B 5934E), in both cases with drought resistance. Based on the results, one can conclude that: 1) the lines with La Posta germplasm yielded better when crossed than the lines with Tuxpeño germplasm, possibly because the testers in the first experiment (CML247 and CML254) are Tuxpeño-related materials; 2) there were no line x tester interactions, which indicates that either of the two testers (CML247 and CML 254) can be used to select for combining ability between the Tuxpeño and La Posta drought-tolerant lines, at least in this area; 3) the lines that showed the greatest tendency towards combining ability in the two experiments were La Posta SeqC3-H297-2-1-1-1-B and La Posta SeqC3-H297-2-1-1-2-B, and it is recommended that these be used immediately and intensively in hybridization programs to incorporate drought tolerance into commercial hybrids.

Spanish

9802|AGRIS 9702

Jose Juan Caballero

CIMMYT Publications Collection

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Lunes –Viernes 9:00 am. 17:00 pm. Si tiene cualquier pregunta, contáctenos a CIMMYT-Knowledge-Center@cgiar.org