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Descripción
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| The pattern of homoeologous metaphase I (MI) pairing has been fully characterized in durum wheat × Aegilops cylindrica hybrids (2n = 4x = 28, ABCcDc) by an in situ hybridization procedure that has permitted individual discrimination of every wheat and wild constituent genome. One of the three hybrid genotypes examined carried the ph1c mutation. In all cases, MI associations between chromosomes of both species represented around two-third of total. Main results from the analysis are as follows (a) the A genome chromosomes are involved in wheat¿wild MI pairing more frequently than the B genome partners, irrespective of the alien genome considered; (b) both durum wheat genomes pair preferentially with the Dc genome of jointed goatgrass. These findings are discussed in relation to the potential of genetic transference between wheat crops and its weedy relative. It can also be highlighted that inactivation of Ph1 provoked a relatively higher promotion of MI associations involving B genome. | |
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Internacional
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JCR del ISI
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Título de la revista
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THEORETICAL AND APPLIED GENETICS |
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ISSN
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0040-5752 |
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Factor de impacto JCR
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3,49 |
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Información de impacto
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Volumen
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118 |
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DOI
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Número de revista
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0 |
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