Abstract
Southern anthracnose or crown rot, caused by Colletotrichum destructivum, is a disease that has been detected on alfalfa in Serbia. During a 6-year period, especially in summer and autumn, alfalfa plants with anthracnose symptoms were studied in the field. Stem infection resulted in wilting and death of the upper portion of the stem, giving rise to the characteristic ‘shepherd’s crook’ symptom. To examine the level of sensitivity of different alfalfa genotypes in experimental conditions, six isolates: Coll-3, Coll-8, Coll-9, Coll-10, Coll-18 and Coll-75 (C. destructivum originating from Serbia) and one reference isolate CC657 C. destructivum, were used. Ten commercial alfalfa genotypes of different origins (K-1, K-28, Zajecarska 83, Osjecka 12, NS Slavija, Banja Luka, Affinity 401 + Z, Florida 77, Vernal S and Perry) were examined in this study. Infected plants showed typical symptoms of anthracnose. Necrotic lesions appeared on the plant stems and gentle bending of the top of the upper third of stems occurred on tested plants. Necrotic lesions then spread to the whole plant and in some plants this led to withering. Assessment of damage by pathogen inoculation was based on a scale of 0–5. Results were processed by analysis of variance as one-factor experiment. Investigated genotypes showed varying resistance to different C. destructivum isolates.
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The Ministry of Education, Science and Technological Development Republic of Serbia, project TR 31057.
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Vasić, T. et al. (2014). Assessment of Susceptibility of Different Alfalfa Genotypes to Colletotrichum destructivum . In: Sokolović, D., Huyghe, C., Radović, J. (eds) Quantitative Traits Breeding for Multifunctional Grasslands and Turf. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-9044-4_14
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DOI: https://doi.org/10.1007/978-94-017-9044-4_14
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