caa a22 4500 445323582 CHVBK 20180317142712.0 cr unu---uuuuu 170323e20110201xx s 000 0 eng 10.1007/s10681-010-0288-7 doi (NATIONALLICENCE)springer-10.1007/s10681-010-0288-7 Identification and genetics of resistance to cercospora leaf spot ( Cercospora zonata ) in faba bean ( Vicia faba ) [Elektronische Daten] [R. Kimber, J. Paull] The fungal disease cercospora leaf spot CLS (Cercospora zonata) has affected major faba bean (Vicia faba) production regions in southern Australian in the last several years. This study offers the first report of sources of resistance to CLS in faba bean and describes techniques to evaluate resistance to C. zonata in faba bean genotypes within a controlled environment. The method was rapid (43days), repeatable (R 2>0.74) and demonstrated positive correlations (R 2>0.45-0.80) to data collected from field disease nurseries under naturally established CLS epiphytotics. All faba bean cultivars currently adopted by the Australian industry were found to be susceptible to CLS and defoliation was found to be an important component of disease expression. Genetic analysis of segregation patterns in F 2 derived F 3 families of 1322/2*Farah (resistant*susceptible) showed the mode of inheritance of resistance to C. zonata was monogenic dominant. F 3 families were shown to segregate in the ratio of 1:2:1 for homozygous resistant: heterozygous: homozygous susceptible (χ22=2.78; P>0.05) and individual plants within heterozygous F 3 families segregated in the ratio of 3:1 for resistant: susceptible responses (χ12=2.93; P>0.05). Monogenic dominant inheritance also explained the change in frequency of resistant and susceptible plants within a population of cv. Cairo following one generation of self-pollination (χ2=0.88, 0.3<P<0.5). The sources of resistance identified in this study are being used to transfer CLS resistance to adapted faba bean genotypes for future cultivar releases to the southern Australian industry. Springer Science+Business Media B.V., 2010 Cercospora zonata nationallicence Resistance nationallicence Genetics nationallicence Vicia faba nationallicence Plant breeding nationallicence Inheritance nationallicence Kimber R. Plant and Soil Health, South Australian Research and Development Institute (SARDI), GPO Box 397, 5001, Adelaide, SA, Australia aut Paull J. School of Agriculture, Food and Wine, University of Adelaide, Waite Campus, 5064, Glen Osmond, SA, Australia aut Euphytica Springer Netherlands 177/3(2011-02-01), 419-429 0014-2336 177:3<419 2011 177 10681 https://doi.org/10.1007/s10681-010-0288-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10681-010-0288-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kimber R. Plant and Soil Health, South Australian Research and Development Institute (SARDI), GPO Box 397, 5001, Adelaide, SA, Australia aut NATIONALLICENCE 700 1- Paull J. School of Agriculture, Food and Wine, University of Adelaide, Waite Campus, 5064, Glen Osmond, SA, Australia aut NATIONALLICENCE 773 0- Euphytica Springer Netherlands 177/3(2011-02-01), 419-429 0014-2336 177:3<419 2011 177 10681 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer