Virulence on Yr27<br />Appearance of new race of yellow rust , virulent to Yr27 in 2004 in Fars province, and later on in many part of the country causes large amount of yield losses on commercial varieties <br />Yr27/Avs<br />Avocet S<br />
Estimated crop loss due to Yellow rust diseases during 2009-10 cropping season in Iran<br />
Wheat breeding program<br />Wheat breeding program is carried out in 4 different climatic zones, & in 33 research stations all over the country. <br />The rusts and other diseases are mainly inspected in selected stations, and appearance of new races are early warned. <br />
Wheat breeding program<br />Using this procedure, appearance of new race of yellow rust , virulent to Yr27 on Atila 50 (Chamran) was alerted in 2004 in Fars province, and last year it appeared in many part of the country. Breeding strategies are enjoys from this early warning system to breed new resistant cultivars suitable for different epidemic prone zones. <br />
New Released Wheat Cvs. <br />Because of screening of all wheat germplasm against with the related pathotype of yellow rust with virulence for Yr27 from eight years ago, all newly released wheat varieties in irrigated areas including:<br /> Morvareied, Sivand, Parsei, Uroum, Meihan, Pishgam and Aflak were resistant through the country. With the intensive research work a plenty of resistant lines are under final consideration which will be released shortly.<br />
Morvarid (Res. Yr in Gorgan) Morocco (Sus.) <br />
Promising New lines (N-85-5) of wheat Res. to Stripe rust<br />
Conclusion Remarks and Future Tasks<br />Being a devastating disease, YR causes a huge crop losses in epidemic situation in Iran<br />Crop losses in 2010 cropping season estimated about 300,000 tons (~US$110 m)<br />Fungicide application is recommended as a mean of protection and control of the disease in emergency situation<br />
Conclusion Remarks and Future Tasks<br />Monitoring of rust races, race analysis and screening of germplasm are continued<br />Seed multiplication of promising lines is started sometimes 3-4 years before releasing, by this way the new varieties are in hand of farmers on time<br />Replacement of susceptible varieties & Crop diversification is a strategy followed in different climatic zones. Since last 3 years >10 R varieties have been released, majority of them are resistant to both YR and SR (ug99)<br />
ابروباد ومه وخورشيد وفلك دركارند <br /> تا توناني به كف آري و به غفلت نخوري (سعدی)<br />The Cloud, the Wind, the Sun, and the Whole World<br /> are busy<br />To make food available to you, and not to take it in unawareness<br />Thank you for your attention<br />
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