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SESSION 4: GENETICS OF HOSTS – PLANT RESISTANCE TO FUSARIUM, VARIETY DEVELOPMENT A systemic approach in wheat breeding for high yield and resistance to Fusarium graminearum P. L. Scheeren 1 , V. R. Caetano 1 , A. Comeau 2 1 Brazilian Agricultural Research Corporation, Embrapa Wheat, Rodovia BR 285, km 294, 99001-970, Passo Fundo, RS, Brazil; 2 Agriculture and Agri-Food Canadá, Canadá E-mail: pedro.scheeren@embrapa.br The average annual wheat area in Brazil has been around 2 million hectares during the last 10 years and 90% of the wheat area is concentrated under notillage, in the states of Rio Grande do Sul and Paraná. The average wheat yield is about 2.200 kg ha-1. Fusarium Head Blight (FHB) is a very important disease, because of the excess humidity in the South Brazilian wheat area. To improve grain yield associated with resistance to diseases, many breeding strategies are used. In Southern Brazil, in 1978, besides the conventional breeding strategies, a new methodology, called “systemic breeding”, was initiated. In this approach, selection is done in the first generations, on a large number of crosses, which will compensate for this very destructive approach. The approach was improved by applying multiple stress selection on F1s and complex F1s (cross of F1/F1), instead of beginning the selection in F2 populations. Such an approach could also be suitable for breeding programs in underdeveloped countries, because it delivers more results at rather low cost. Artificial stresses and pathogen inoculation were used in order to obtain fast solutions for several selected characteristics. Plant ideotype and bread wheat quality traits were also important goals. Systemic lines with high resistance can be obtained in large numbers. The first results of the new approach were breeding lines with a set of combined desirable traits and the new cultivar BRS Parrudo, which was released in 2012, and possesses very good resistance to Fusarium. It presents also a good plant ideotype, has a set of resistances to different diseases, high yield potential and high gluten strength. Also in Canada the systemic approach gave evidence of true victory against FHB in less than 4 years, where they got very good resistance with good agronomic characters in the line FL62R1. Keywords: Triticum aestivum, Fusarium graminearum, breeding methods, cultivars 67
SESSION 4: GENETICS OF HOSTS – PLANT RESISTANCE TO FUSARIUM, VARIETY DEVELOPMENT Molecular and genetic analysis of Fusarium head blight resistance in triticale (xTriticosecale) T. Miedaner, R. Kalih, S. Michel, H. P. Maurer Universität Hohenheim (720), State Plant Breeding Institute, 70593 Stuttgart, Germany E-mail: miedaner@uni-hohenheim.de Fusarium head blight (FHB) infects triticale, a cross between wheat and rye, similarly like the two parental cereals causing yield reduction and contamination with deoxynivalenol (DON). Triticale is grown in the European Union with 3.4 million hectares (ha), in Germany and France with each of 400,000 ha, in Poland with 1.3 million ha and mainly used for feeding of livestock. DON content in the grain is a great obstacle because swine are the most sensitive animals; EU guidelines for DON are
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Bordeaux EFS12 12 th European Fusar
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TABLE OF CONTENTS Welcome from the
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4 SPONSORSHIP The 12 th European Fu
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8 13:00 - 14:00 Lunch 14:00 - 15:00
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10 Session 4: Genetics of Hosts - P
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12 Thursday, May 16 th Session 6: F
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Evidence for birth-and-death evolut
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de Hoog G. S., 89, 114, 236 de Kler
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Ponts N., 33, 36, 82, 94, 104, 106,
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BOKU-University of Natural Resource
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touatisihem03@yahoo.fr He Xinyao In
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steve.oliver@bioc.cam.ac. uk Ortega
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Subramaniam Gopal Agriculture and A
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