caa a22 4500 475807065 CHVBK 20180406123749.0 cr unu---uuuuu 170329e20000301xx s 000 0 eng 10.1007/BF01086378 doi (NATIONALLICENCE)springer-10.1007/BF01086378 Interspecific hybridization and the analysis of meiotic chromosome pairing in Dahlia (Asteraceae — Heliantheae) species with x [Elektronische Daten] 16 [Melanie Gatt, Keith Hammett, Brian Murray] The successful production of a large number of artificial hybrids betweenDahlia species based on x = 16 has allowed a detailed study of their genomic relationships. Chromosome behaviour in these artificial hybrids was extremely similar to that observed in parental species suggesting that there is a considerable degree of homology between the genomes of theseDahlia species. Using GISH it can be demonstrated that in these hybrids bivalent formation involved pairing only between parental genomes. The ability of GISH to differentiate between parental genomes in artificial hybrids was variable, indicating that molecular divergence of highly repeated sequences has accompanied the evolution of these species. However, the extent of chromosome pairing and chiasma formation in the hybrids does not reflect the differences that can be detected by GISH. Seyeral of the new hybrid combinations have resulted in horticulturally interesting plants. Springer-Verlag, 2000 Dahlia (Asteraceae-Heliantheae) nationallicence interspecific hybridization nationallicence chromosome pairing nationallicence genome homology nationallicence genomic in situ hybridization (GISH) nationallicence Gatt Melanie School of Biological Sciences, The University of Auckland, Private Bag, 92019, Auckland, New Zealand aut Hammett Keith 488C Don Buck Road, Massey, Auckland 8, New Zealand aut Murray Brian School of Biological Sciences, The University of Auckland, Private Bag, 92019, Auckland, New Zealand aut Plant Systematics and Evolution Springer-Verlag 221/1-2(2000-03-01), 25-33 0378-2697 221:1-2<25 2000 221 606 https://doi.org/10.1007/BF01086378 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01086378 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Gatt Melanie School of Biological Sciences, The University of Auckland, Private Bag, 92019, Auckland, New Zealand aut NATIONALLICENCE 700 1- Hammett Keith 488C Don Buck Road, Massey, Auckland 8, New Zealand aut NATIONALLICENCE 700 1- Murray Brian School of Biological Sciences, The University of Auckland, Private Bag, 92019, Auckland, New Zealand aut NATIONALLICENCE 773 0- Plant Systematics and Evolution Springer-Verlag 221/1-2(2000-03-01), 25-33 0378-2697 221:1-2<25 2000 221 606 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer