Selection of Resistance Sources to Stripe Rust in Line of Preliminary, Advanced and Elite Regional Wheat Yield Trials of Four Climatic Zones (PRWYT, ARWYT, ERWYT 2012-13)
2014
Afshari, F | Zakeri, K | Abrahimnejad, Sh | Safavi, A. S | Najafian, G | Yazdansepas, A | Esmaeilzadeh, M | Vahabzadeh, M | Mahfouzi, M | Rejaei, S | Bayat, Z. H | Mofidei, H | Tabaei, M
Stripe rust of wheat is the most important disease in most wheat growing regions in Iran. In 2012-13 cropping season, 1316 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 943 (71.6 %) lines were resistant in adult plant stage. Among 300 of Cold region germplasm 255 lines (85%), North germplasm 66 (82.5%), South lines (59.5%), Moderate lines (79.5%) and salinity wheat lines (43.3%) were resistant in all region. In the seedling test more than 50% of lines showed resistance to pathotype 194E42A+ which confirm of present of seedling resistance gene/s. Remaining lines were moderately susceptible - susceptible to stripe rust disease.
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