| Conclusion On 2A of Hope, and on 2A and 2D of Timstein a locus for a gene conditioning the production of tyrosinase in the caryopses has been identified. The allele of this gene has a strong action causing the caryopses to turn blackish after they had been soaked in water for 24 hours and in an aqueous phenol solution for four hours. It is quite likely that a homeologous locus will be found on 2B. It is proposed to use Tc as gene symbol, while the particular genes can be numbered as Tc-1 on 2A, Tc-2 on 2B and Tc-3 on 2D. Literature cited BERTRAND, G. et METTERMILCH 1907. Sur l'existence d'une tyrosinase dans le son de froment. CR Acad. Sci. 144: 1285-1288. BHOWAL, J. G., S. K. BANERJEE and M. G. JOSHI 1969. The evolution of the phenol colour reaction in gene in wheat. Japan. J. Genetics 44: 123-128. BLANCHARD, M. 1953. Contribution a la determination des especes et varietes de bles cultivees en Algerie par la reaction des graines, des epis et des pailles a l'acide phenique. Proc. Int. Seed Test. Assoc. 18: 161-166. DUTKIEWICZ-MICZYNSKA, B. 1930. La maniere de discerner les varietes du froment par la coloration des graines a l'acide du phenol. Roczniki Nauk Rolniczych i lesn. 23. FRASER, J. G. C. and F. GFELLER 1925. Two new methods of distinguishing certain Canadian wheats. Scient. Agric. 15:564-574. FRASER, J. G. C. and F. GFELLER 1936. The inheritance and use of phenol colour reaction in hard red spring wheat. Scient. Agric. 17: 243-249. FRIEDBERG, L. 1932. Action de l'acide phenique et de la potasse alcoolique sur les bles. Station Centrale d'Amel. de Plantes. FRIEDBERG, L. 1933. Essai de classification des bles d'apres leur reaction a l'acide phenique. Ann. Agron. 3: 697-736. HANSEL, H. 1958. Untersuchungen zur Unterscheidung von Gerstensorten durch Phenolreaktion. Mitt. Vers. Anst. Garungsgew. 12: 74-77. HERMANN, W. 1928. Die Unterscheidung von Weizensorten durch Phenolfarbung der Samen. Kuhn Archiv 19: 11-65. JONARD, P. 1951. Les bles tendres (Triticum vulgare VILL.) cultives en France. Paris. 459 pp. JOSHI, M. C. and S. K. BANERJEE 1968. Multiple alleles for phenol colour reaction in emmer wheats. Cited by BHOWAL et al. (1969). KNOTT, D. R. and R. G. ANDERSON 1956. The inheritance of rust resistance. I. The inheritance of stem rust resistance in ten varieties of common wheat. Can. J. Agric. Sci. 26: 174-195. LISTOWSKI, A. 1936. Die Unterscheidung der Gerstensorten durch Phenolfarbung der Korner. Angew. Bot. 18: 142-148. MICZYNSKI, K. 1938. Genetische Studien uber die Phenolfarbenreaktion beim Weizen. Z. Zucht. A 22: 564-587. PERCIVAL, J. 1934. Wheat in Great Britain. Reading, 125 pp. PETERSON, R. F. 1965. Wheat. Botany, cultivation, and utilization. London 421 pp. PFUHL, J. 1927. Die Unterscheidung der Weizensorten durch Farbung der Korner. Angew. Bot. 9: 374- 379. QUISENBERRY, R. S. and L. P. REITZ (Eds.) 1967. Wheat and wheat improvement. Amer. Soc. of Agron. Madison. Agronomy series no. 13. 560 pp. SAWICKI, J. 1955. (The phenol reaction of grain used for identifying varieties of naked barley). Acta Agrobot. 3: 129-166. Polish with English summary. SCHRODER, H. 1932. Die Phenolfarbung des Roggenkorns als Sortenmerkmal. Fort. d. Landw. 7(13) 1 July, 1932. SEARS, E. R., W. Q. LOEGERING and H. A. RODENHISER 1957. Identification of chromosomes carrying genes for stem rust resistance in four varieties of wheat. Agron. J. 49: 208-212. SIMON, M. 1955. Les nouvelles varietes de ble tendre inscrites au catalogue des especes et varietes depuis 1947. I.N.R.A., Paris, 137 pp. SNELL, R. und F. Fr. PFUHL 1930. Beitrag zur Morphologie und Systematik der Weizensorten. Mitt. Biol. Reichanstalt f. Land- und Forstwirtschaft. 39: 35-37. VOSS, J. 1933. Morphologie und Gruppierung der Deutschen Weizensorten. Mitt. Biol. Reichastalt f. Land- und Forstwirtschaft. Berlin-Dahlem. 45: 1-122. VOSS, J. 1936. Ueber Phenolfarbung und Carotinoidgehalt von Weizen und ihre Verwendung zur Sorten- unterscheidung. Angew. Bot. 18: 149-204. VOSS, J. 1938. Ueber sorteneigene Oxydations- und Reduktionsfermente bei Triticum sativum L., ihre Verwendbarkeit zur Sortenunterscheidung. Angew. Bot. 20: 265-293. WATSON, I. A. and N. H. LUIG 1958. Timvera-a Steinwedel x Triticum timopheevi derivate. Agron. J. 50: 644. ZEVEN, A. C. 1969. Fourth supplementary list of wheat varieties classified according to their genotype for hybrid necrosis. Euphytica 18: 43-57. (Received February 14, 1972) |
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