Abstract
Data on 3n×2n and 2n×3n crosses as a source of trisomics inPetunia are given. The delayed germination and retarded growth ofPetunia trisomics, in comparison with diploids, is mentioned.
The application of recent fluorescence staining techniques to enzymatically macerated roottips made it possible to distinguish the seven chromosome pairs ofPetunia hybrida. With the aid of the standard karyogram, a number of primary trisomics could be identified.
The origin of two primary trisomics is discussed. With these trisomics, some genetic factors, placed in linkage groups, have been localized on one of the chromosomes. This first localization concerns the linkage group, containing the geneUn (=Undulata) for flower shape. In a primary trisomic with the undulate flower shape, chromosome V proved to be present in triplicate. From the deviating ratios for the undulata character in crosses with this trisomic, it was concluded that the location of the linkage group containing the geneUn is on chromosome V.
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References
Bianchi, F. (1959). Onderzoek naar de erfelijkheid van de bloemvorm bijPetunia. Thesis Amsterdam.
Bianchi, F. (1960). Genetisch-chemisch bloemkleuronderzoek bijPetunia Genen Phaenen 5: 33–45.
Dermen, H. (1931). Polyploidy inPetunia.Am. J. Bot. 18: 250–261.
Levan, A. (1937). Chromosome numbers inPetunia.Hereditas 23: 99–112.
Maizonnier, D. (1971). Utilisation de plantes haploïdes pour l'analyse du caryogramme dePetunia hybrida. Hort.Ann. Amél. Pl. 21: 257–264.
Maizonnier, D. &A. Cornu (1971). A telocentric translocation responsible for variegation inPetunia.Genetica 42: 422–436.
Seidel, H. (1962). Beiträge zur Genetik und Züchtung der tetraploiden Superbissima-Petunien (Petunia x hybrida Vilm.Superbissima-Gruppe).Z. PflZücht. 48 (4): 327–359.
Smith, F. J. &J. L. Oud (1972). The possibility to distinguish chromosomes ofPetunia hybrida by quinacrine fluorescence.Genetica 43: 589–596.
Smith, F. J., J. L. Oud &J. H. de Jong (1973). A standard karyogram ofPetunia hybrida Hort.Genetica 44: 474–484.
Sullivan, T. D. (1947). Somatic chromosomes of pedigreed hybrid Petunia.Bull. Torrey Bot. Club 74: 453–475.
Wiering, H. &P. de Vlaming (1973). Glycosylation and methylation patterns of anthocyanins inPetunia hybrida. I. The gene Gf.Gene Phaenen 16(2): 35–50.
Wiering, H. (1974). Genetics of flower colour inPetunia hybrida Hort.Gene Phaenen 17: 117–134.
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Smith, F.J., de Jong, J.H. & Oud, J.L. The use of primary trisomics for the localization of genes on the seven different chromosomes ofPetunia hybrida. I. Triplo V. Genetica 45, 361–370 (1975). https://doi.org/10.1007/BF01508311
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DOI: https://doi.org/10.1007/BF01508311