| IV. Anddendum to WIS No. 40, 1975 The following paragraphs should be added to the article "Genetic control of factors regulating the phenol reaction of wheat and rye grain" by Colin W. Wrigley, WIS., No. 40, pages 6 to 10. In view of the lack of biochemical knowledge about the phenol reaction, it is suggested that any gene symbol adopted should not refer to an enzymic reaction possibly involved, but that it should refer to the actual test used - the phenol reaction. Indeed, the consideration of a genetic symbol (s) should be delayed until the availability of further inheritance data involving hexaploid wheats. However, it is clear that chromosomes 2A, 2D and 2R are important in controlling the synthesis of factors responsible for the phenol reaction. No support has yet been found for the suggestion of ZEVEN (1972) that a homoeologous locus will be found on chromosom 2B. |