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The colour of the coleoptile of wheat I. Anthocyanins of the coleoptiles of some Triticinae J. VAN BRAGT1), J. B. BROUWER and A. C. ZEVEN2) The origin of the tetraploid and hexaploid Triticum species has been investigated in many ways (JENKINS, 1966 ; JOHNSON and HALL, 1966 ; MAC KEY, 1966 ; REES and WALTERS, 1966, RILEY et al. 1967 ; RYAN, 1966 and TSUNEWAKI, 1966 to mention a few recent publications). It was hoped that by identifying the anthocyanidins obtained from the anthocyanins which colour the coleoptiles of some Triticinae lines additional data about this origin would be found. The identifications were carried out as described by VAN BRAGT et al. (1966). The reslts are given in Table 1. (pp. 3-4) All lines but one contained cyanidin and peonidin. The line of Aegilops bicornis contained cyanidin only. The uniformity of these results does not permit us to give any supplementary information on the origin of the Triticum species. However, it is possible that further investigations of the flavonoids in the coleoptiles of wheat species will provide useful data for chemotaxonomic studies. Literature Cited VAN BRAGT, J., E. M. J. GERARDS and R. A. H. 1966. Identification of flower colouring substances by means of thin layer chromatography. Meded. Dir. Tuinb. 26 : 97-99. Dutch with English summary. JENKINS, J. A. 1966. The origin of cultivated wheat. Can. J. Genet. Cytol. 8 : 220-232. JOHNSON, B. L. and O. HALL 1966. Electrophoretic studies of species relationships in Triticum. Acta Agric. Scand. Suppl. 16 : 222-224. MAC KEY, J. 1966. Species relationship in Triticum. Hereditas. Suppl. 2 : 237-276. REES, N. and M. R. WALTERS 1966. Nuclear DNA and the evolution of wheat. W. I. S. No. 22 : 18-19. RILEY. R., H. COUCOLI and V. CHAPMAN 1967. Chromosomal interchanges and the phylogeny of wheat. Heredity 22 : 233-247. RYAN, G. S. 1966. Another feasible approach to study the phylogeny of cultivated hexaploid wheat. W. I. S. No.22 : 14-17. TSUNEWAKI, K. 1966. Comparative gene analysis of common wheat and its ancestral species. III. Glume hairiness. Genetics 53 : 303-311. (Receieved Dec. 16,1967) |
| 1) Department of Horticulture and 2) Institute of Plant Breeding, Agricultural University, Wageningen, The Netherlands. |