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handle: 10261/37112
[ES] Con el fin de obtener triticales de 42 cromosomas que puedan tener utilidad práctica en las tierras centeneras españolas, se han realizado cruzamientos entre las especies de trigo Triticum durum, T. turgidum, T. polonicum, T. carthlicum, T. dicoccum, T. dicoccoides y T. Timopheevi, y diversas formas de centeno, Secale cereale. En total 64 genotipos de trigo y 82 variedades, poblaciones o líneas consanguíneas de centeno se han combinado en 305 cruzamientos diferentes, de los que 54 han dado origen por lo menos a una planta híbrida intergenérica con 21 cromosomas. El híbrido intergenérico se ha obtenido con las siete especies de trigo utilizadas en este trabajo. Mediante tratamientos con colchicina se han obtenido nueve triticales de 42 cromosomas, de los que cinco derivan del cruzamiento T. durum x S. cereale, tres del T. dicoccum x S. cereale y uno del T. dicoccoides x S. cereale.
[EN] With the purpose of obtaining 42-chromosome triticale types of practical value for Spanish rye lands, the wheat species Triticum durum, T . turgidum, T. polonicum, T. carthlicum, T. dicoccum, T. dicoccoides and T. Timopheevi have been crossed with Secale cereale of various origins. Sixty four wheat genotypes and 82 rye varieties, populations or inbred lines are involved in our crossing programme. From 305 cross combinations carried out, 54 produced at least one F1, plant with 21 chromosomes. Intergeneric hybrids were obtained with all Triticum species involved in the crosses. By colchinice treatment nine triticale types with 42 chromosomes have been obtained: five from the cross combination T. durum X S. cereale, three from T. dicoccum x S cereale and one from T. dicoccoides x S. cereale.
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