Necrosis genes in common wheat varieties from the South Europe
K. TSUNEWAKI and Y. NAKAI
Laboratory of Genetics. Faculty of Agriculture Kyoto University, Kyoto 606, Japan
We have undertaken further investigations on the geographical distribution of necrosis and chlorosis genes, using 280 common wheat varieties (or strains) from Portugal (32 varieties), Spain(116), Italy(61), Yugoslavia(17), Rumania(10), Hungary(5), Bulgaria (27) and Greece (12). Those varieties were crossed to three testers, Jones Fife (ne1Ne2ch1Ch2), Prelude (Ne1ne2ch1Ch2) and Macha (Ne1ne2Ch1ch2), and their F1 phenotypes were observed as to necrosis and chlorosis. Based on this observation, their genotype was determined as shown in the following table.
