A comparison of chromosome instability in cell suspensions of diploid, tetraploid and hexaploid wheats

A - Papers appearing in refereed journals

Winfield, M., Davey, M. R. and Karp, A. 1993. A comparison of chromosome instability in cell suspensions of diploid, tetraploid and hexaploid wheats. Heredity. 70, pp. 187-194.

AuthorsWinfield, M., Davey, M. R. and Karp, A.
Abstract

Chromosome instability was monitored through time in cell suspensions of the diploids Triticum tauschii (the D genome donor) and T monococcum (the A genome donor), the tetraploids, T. durum and T dicoccum (both AABB) and in the cultivars Copain and Sicco of hexaploid (AABBDD) breadwheat (T aestivum). Differences in stability were observed between the different ploidy levels and between species within the ploidy levels. The diploids were most stable, particularly T tauschii, and the hexaploids were least stable. Instability was greatest in all the lines during the first months of culture. In all but one line, very few structural aberrations were observed, even after many months in culture. Morphogenetic capacity was lost in all lines, even though some retained high proportions of euploid cells. The relevance of these results is discussed in relation to the regeneration of breadwheat from protoplasts.

KeywordsEcology; Evolutionary Biology; Genetics & Heredity
Year of Publication1993
JournalHeredity
Journal citation70, pp. 187-194
Digital Object Identifier (DOI)doi:10.1038/hdy.1993.28
Open accessPublished as non-open access
FunderBiotechnology and Biological Sciences Research Council
Copyright licensePublisher copyright
PublisherWiley
Nature Publishing Group
ISSN0018-067X

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