01465naa a2200301 a 450000100080000000500110000800800410001910000210006024501680008126000090024930000190025849000080027752005820028565000090086765000120087665000100088865000130089865000170091165300120092865300180094065300110095865300080096965300190097765300250099665300150102165300140103677301130105014527842009-06-04       1985    bl uuuu     u00u1 u    #d1 aGHASSEMI, SH. M.  aResearch on relative resistance of different varieties of sunflower to downy mildew "Plasmopara helianthi novot" in greenhouse and in the experimental field tests.  c1985  ap.581-586. t.2  vt.2  aFor evaluation of relative resistance of different varieties of sunflower to Plasmopara helianthi many research worcks were done in Iran according to the combined methods of A.Y.Panchenko, and P.P.Ilatovskii, and also by personal experience of author in greenhouse tests and field experiments. In field experiments at 1983, different varieties were examined on the soils which were naturaly infected by the oospora of the fungus, to see and control resistance or susceptibility of tested varieties, after these examinations the tested varieties were grouped by Duncan's method.  aIran  aDoença  aFungo  aGirassol  aResistência  aDisease  aFitopatologia  aFungus  aIra  aPhytopathology  aPlasmopora helianthi  aResistance  aSunflower  tIn: CONFERENCIA INTERNACIONAL DE GIRASOL, 11., 1985, Mar del Plata. Actas. Mar del Plata : ASAGIR/ISA, 1985.