Evaluation of adult plant resistance of wheat advanced lines to stripe rust in East of Mazandaran
1995
Golzar, H.
The effects of stripe rust epidemics on advanced lines of wheat were evaluated in field experiments during the recent two years. The races 4E2, 6E2 and 138E144 of Puccinia striiformis F. sp. tritici actually present in the field were identified from uredia collected on leaves by Torabi et al 1993-1994. The lines were planted as a rust nursery under mist irrigation. Natural epidemic of yellow rust became widespread and severity and type of infection on upper leaves of advanced lines were estimated several times at 7-day intervals with the aid of the modified cobb scale. Infection rating was also estimated by Average Coefficient of Infection (ACI). The results suggest that two kinds of resistance were present between lines as follows: 1. Advanced lines with Immune (O) or Resistant (R) type reaction such as Chil "S", Ombu/Alamo... HD2380...2. Advanced lines with lower rate of disease development and MR to MS type of Infection, such as Bow "S"/Nkt CM... Kauz CM... Attila CM... Opata CM...
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