Determination of Resistant to Yellow Rust in Lines of Preliminary, Advanced and Elite Regional Wheat Yield Trials (PRWYT, ARWYT, and ERWYT- 2009-10)
2011
Afshari, Farzad | Zakeri, A`bd Ol-Karim | A`ta Hosseini, Mahmud | Ebrahim Nezhad, Shapur | Safavi, Safar A`li | Najafiyan, Gudarz | Yazdan Sepas, Amir | Esmaeil Zadeh, Mohsen | Vahhab Zadeh, Mojtaba | Mahfuzi, Sirus | Hassan Pur Hosni, Maqsud | Rajaei, Sasan | Hassan Bayat, Zohreh | Tabe`i, Mohammad | Mofidi, Hesam Al-Din
Yellow (Stripe) rust of wheat is the most important disease in most wheat growing regions in Iran. In 2009-10 cropping season, 1225 line of Preliminary, Advanced and Elite lines were tested for resistance to stripe rust in adult plant stage. In the field all lines were planted in two rows of one-meter length with 30cm distance under artificial inoculation. A susceptible wheat cultivar (Bolani) was planted as spreader around the field and between the rows. Field assessments were based on disease severity according to the modified Cobb scale (Peterson et al., 1948) and disease reaction (Roelfs et al., 1992). The results showed that 911 (77%) lines were resistant in adult plant stage. In the seedling test more than 70% of lines showed resistance to pathotype 6E150A+,Yr 27+ which confirm of present of seedling resistance gene/s. Remaining lines were moderately susceptible - susceptible to yellow rust disuses.
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