The main diseases of wheat (Triticum aestivum L.) in Egypt, causing up to 50% of yield losses. Genetic resistance is the most economic and effective means of reducing yield losses caused by the disease. However, breeding genotypes for disease resistance is a continuous process and plant breeders need to add new effective sources to their breeding materials. | Annals of Agricultural Science 2015 60 1 29 39 H O S T E D BY Faculty of Agriculture Ain Shams University Annals of Agricultural Science locate aoas Screening of wheat genotypes for leaf rust resistance along with grain yield Ibrahim Sobhy Draz a Mohammed Saad Abou-Elseoud b Abd-Elmageed Mohammed Kamara b Omaima Abd-Ellatif Alaa-Eldein a Ahmed Farag El-Bebany b a Wheat Diseases Research Department Plant Pathology Research Institute Agricultural Research Centre 12619 Giza Egypt b Department of Plant Pathology Faculty of Agriculture University of Alexandria 21545 El-Shatby Alexandria Egypt Received 19 August 2014 accepted 12 January 2015 Available online 21 February 2015 KEYWORDS Abstract Leaf rust caused by Puccinia triticina Eriks. is one of the main diseases of wheat Trit- Wheat resistance icum aestivum L. in Egypt causing up to 50 of yield losses. Genetic resistance is the most eco- Wheat leaf rust nomic and effective means of reducing yield losses caused by the disease. However breeding Puccinia triticina genotypes for disease resistance is a continuous process and plant breeders need to add new effective Leaf rust resistance sources to their breeding materials. Among 42 Egyptian wheat varieties screened for leaf rust resis- Wheat yield losses tance only 9 varieties Sakha94 Giza168 Gemmiza9 Gemmiza10 Gemmiza11 Sids12 Sids13 Wheat genotypes Misr1 and Misr2 exhibited seedling and adult plant resistance during 2010 11 and 2011 12 growing seasons. Out of 41 monogenic line Lr genes tested only 13 Lr genes Lr9 Lr10 Lr11 Lr16 Lr18 Lr19 Lr26 Lr27 Lr29 Lr30 Lr34 Lr42 and Lr46 exhibited seedling resistance while 9 Lr genes Lr19 Lr20 Lr21 Lr24 Lr29 Lr30 Lr32 Lr34 and Lr44 showed adult plant resistance at both growing seasons. This result may add a depth of their resistance to be exploited as good sources of resistance. Partial resistance traits of wheat seedlings were present in 12 varieties Sids12 Misr2 Sakha94 Misr1 Sids13 Giza168 Gemmiza9 Sids7 .
