Physiologic races of Puccinia coronata avenae in the Argentine cereal belt
Cenoz, H.P.; Vallega, J.
Rev. Invest. agric., B. Aires 9(4): 325-339
1955
Accession: 013790216
A revised series of oat varieties for the classification of the physiologic races of Puccinia coronata enabled the authors to subdivide the four groups in Argentina formerly known as Arg. 1, 45, 55, and 56 into 22 distinct races of which 13 (238, 237, 225, 244, 236, 230, 226, 227, 260, 287, 261, 277, and 278) corresponded to Arg. 1 (affecting neither Bond nor Victoria), five (203, 265, 263, 276, and 262) to Arg. 45 (Bond but not Victoria), 279 and 213 to Arg. 55 (both varieties), and 258 and 259 to Arg. 56 (only Victoria). Tests made with the selections Magnif. 29 (Tama x Santa Fe) and Magnif. 28 (Klein Mar x Santa Fe) confirmed that the combination of resistance factors carried by Victoria and Bond controls the pathogenicity of all the races of P. coronata at present known in Argentina.