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Cytogenetic studies in Cochlearia L. (Cruciferae). The chromosomal constitution of C. danica L.

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Abstract

Genome analysis has been used to investigate the relationship of C. danica L. to the diploid and tetraploid species in the genus. The results of this analysis suggest that C. danica has the genomic constitution A1 7 A1 7 A2 7 A2 7 T7 T7. Both A7 genomes in C. danica are segmentally differentiated from the A7 genome in C. groenlandica L. and from the similar A6 genomes in C. pyrenaica DC. and C. officinalis L. but, in hybrids, are capable of some pairing with these genomes. A2 7 is more distantly related to A7 and A6 than is A1 7 and in A7 some of the differentiation has taken place by reciprocal translocations. A1 7 and A2 7 still retain enough homology for pairing between them. The T7 genome has no homology with any of the A genomes but may be derived from an ancestral T6 genome.

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  1. Department of Genetics, University of Liverpool, Liverpool, U.K.

    J. J. B. Gill

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  1. J. J. B. Gill
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Gill, J.J.B. Cytogenetic studies in Cochlearia L. (Cruciferae). The chromosomal constitution of C. danica L.. Genetica 46, 115–126 (1990). https://doi.org/10.1007/BF00122520

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  • DOI: https://doi.org/10.1007/BF00122520

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