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handle: 10261/163624
[ES] Los patrones heteróticos existentes en maíz (Zea mays L,) grano podrían ser de utilidad para mejorar los de maíz dulce. El objetivo de este trabajo fue determinar los cruzamientos más eficientes para integrar los patrones heteróticos de maíz grano y los de maíz dulce. Un diaIelo entre las poblaciones de maíz dulce Country Gentleman, Golden Bantam y StoweII's Evergreen y los sintéticos de maíz grano EPS6(S)C3, EPS7(S)C3 y EPS10 fue evaluado durante dos años en dos localidades en el noroeste de España. Las diferencias para efectos heteróticos (hjj) y heterosis medias (h) fueron significativas para todos los caracteres excepto humedad de grano. Las diferencias para heterosis varietales (hj) y heterosis específicas (sjj) fueron significativas para rendimiento, altura de planta y número de filas. El mejor patrón heterótico de maíz grano sería EPS6(S)C3 x EPS10, seguido por EPS6(S)C3 x EPS7(S)C3, y para maíz dulce Golden Bantam x Country Gentleman, seguido por Golden Bantam x Stowell' s Evergreen. La mejor elección para integrar los patrones heteróticos sería (EPS6(S)C3 x Golden Bantam) x (EPS7(S)C3 x Stowell' s Evergreen).
[EN] Field corn (Zea mays L.) heterotic patterns could improve the sweet corn heterotic patterns. The objective of this work was to determine the most efficient crosses to integrate these field and sweet corn heterotic patterns. A dialIel among the sweet corn populations Country Gentleman, Golden Bantam and Stowell ´s Evergreen, and the fíeld corn synthetics EPS6(S)C3, EPS7(S)C3 and EPS10 was evaluated two years, at two locations in northwestern Spain. Differences for helerosis effects (hjj) and average heterosis (h) were significant for all but grain moisture. Differences for variety heterosis (hj) and specific heterosis (Sjj) were significant for yield, plant height and row number. The best field corn heterotic pattern woulld be EPS6(S)C3 x EPS10, followed by EPS6(S)C3 x EPS7(S)C3, and for sweet corn Golden Bantam x Country Gentleman, followed by Golden Bantam x Stowell's Evergreen. The best choice for integrating the heterotic patterns would be (EPS6(S)C3 x Golden Bantam) x (EPS7(S)C3 x Stowell' s Evergreen).
Trabajo presentado en las XI Jornadas de selección y mejora de plantas hortícolas, celebradas en Córdoba (España), entre el 21 y el 23 de octubre de 1998.- 8 páginas y 4 tablas.
Peer reviewed
Heterotic patterns, Zea mays, L., Maíz dulce, Field corn, Maíz grano, Sweet corn, Patrones heteróticos
Heterotic patterns, Zea mays, L., Maíz dulce, Field corn, Maíz grano, Sweet corn, Patrones heteróticos
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