Variation in aggressiveness of Phoma macdonaldii isolates from three Balkan countries and Ukraine
Конференцијски прилог (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Phoma macdonaldii is a ubiquitous pathogen, affecting sunflower by premature leaf
senescence, stem cortical tissue necrosis and basal stem girdling. Sunflower genotypes
expressing partial resistance have been reported. Currently, disease has reemerged as a threat
to sunflower production in some sunflower cropping areas. To estimate variability in
pathogen population, sunflower stems with disease symptoms from Serbia, Turkey, Romania
and Ukraine were sampled. Total of 54 isolates was used for inoculation of four inbred lines
differing in resistance to phoma black stem. Results from scoring of sunflower inbred lines
seven days after inoculation showed significant differences in disease severity measured by
percentage of cotyledon petiole necrosis. Significant difference was detected both among
isolates and genotypes. Isolates were segregated in five clusters. Five isolates were found to
be highly aggressive based on disease severity. The least aggressive were seven is...olates,
producing mild symptoms on all tested genotypes. Majority of tested isolates lead to complete
necrosis of inoculated plant part of the most susceptible genotype and mild symptoms of other
three genotypes. Isolate aggressiveness was not correlated with geographic origin. In
conclusion, significant variability among pathogen isolates was confirmed with several
isolates distinguished as highly aggressive. This research could assist in breeding process for
resistance to phoma black stem.
Кључне речи:
sunflower / Phoma macdonaldii / aggressiveness / isolates / Balkans / Ukraine / pathogensИзвор:
Proceedings, 19th International Sunflower Conference, 29 May - 3 June 2016, Edirne, Turkey, 2016, 764-768Издавач:
- Paris : International Sunflower Association
Финансирање / пројекти:
- Развој нових сорти и побољшање технологија производње уљаних биљних врста за различите намене (RS-MESTD-Technological Development (TD or TR)-31025)
Колекције
Институција/група
FiVeRTY - CONF AU - Dedić, Boško AU - Maširević, Stevan AU - Jocić, Siniša PY - 2016 UR - http://fiver.ifvcns.rs/handle/123456789/2783 AB - Phoma macdonaldii is a ubiquitous pathogen, affecting sunflower by premature leaf senescence, stem cortical tissue necrosis and basal stem girdling. Sunflower genotypes expressing partial resistance have been reported. Currently, disease has reemerged as a threat to sunflower production in some sunflower cropping areas. To estimate variability in pathogen population, sunflower stems with disease symptoms from Serbia, Turkey, Romania and Ukraine were sampled. Total of 54 isolates was used for inoculation of four inbred lines differing in resistance to phoma black stem. Results from scoring of sunflower inbred lines seven days after inoculation showed significant differences in disease severity measured by percentage of cotyledon petiole necrosis. Significant difference was detected both among isolates and genotypes. Isolates were segregated in five clusters. Five isolates were found to be highly aggressive based on disease severity. The least aggressive were seven isolates, producing mild symptoms on all tested genotypes. Majority of tested isolates lead to complete necrosis of inoculated plant part of the most susceptible genotype and mild symptoms of other three genotypes. Isolate aggressiveness was not correlated with geographic origin. In conclusion, significant variability among pathogen isolates was confirmed with several isolates distinguished as highly aggressive. This research could assist in breeding process for resistance to phoma black stem. PB - Paris : International Sunflower Association C3 - Proceedings, 19th International Sunflower Conference, 29 May - 3 June 2016, Edirne, Turkey T1 - Variation in aggressiveness of Phoma macdonaldii isolates from three Balkan countries and Ukraine EP - 768 SP - 764 UR - https://hdl.handle.net/21.15107/rcub_fiver_2783 ER -
@conference{ author = "Dedić, Boško and Maširević, Stevan and Jocić, Siniša", year = "2016", abstract = "Phoma macdonaldii is a ubiquitous pathogen, affecting sunflower by premature leaf senescence, stem cortical tissue necrosis and basal stem girdling. Sunflower genotypes expressing partial resistance have been reported. Currently, disease has reemerged as a threat to sunflower production in some sunflower cropping areas. To estimate variability in pathogen population, sunflower stems with disease symptoms from Serbia, Turkey, Romania and Ukraine were sampled. Total of 54 isolates was used for inoculation of four inbred lines differing in resistance to phoma black stem. Results from scoring of sunflower inbred lines seven days after inoculation showed significant differences in disease severity measured by percentage of cotyledon petiole necrosis. Significant difference was detected both among isolates and genotypes. Isolates were segregated in five clusters. Five isolates were found to be highly aggressive based on disease severity. The least aggressive were seven isolates, producing mild symptoms on all tested genotypes. Majority of tested isolates lead to complete necrosis of inoculated plant part of the most susceptible genotype and mild symptoms of other three genotypes. Isolate aggressiveness was not correlated with geographic origin. In conclusion, significant variability among pathogen isolates was confirmed with several isolates distinguished as highly aggressive. This research could assist in breeding process for resistance to phoma black stem.", publisher = "Paris : International Sunflower Association", journal = "Proceedings, 19th International Sunflower Conference, 29 May - 3 June 2016, Edirne, Turkey", title = "Variation in aggressiveness of Phoma macdonaldii isolates from three Balkan countries and Ukraine", pages = "768-764", url = "https://hdl.handle.net/21.15107/rcub_fiver_2783" }
Dedić, B., Maširević, S.,& Jocić, S.. (2016). Variation in aggressiveness of Phoma macdonaldii isolates from three Balkan countries and Ukraine. in Proceedings, 19th International Sunflower Conference, 29 May - 3 June 2016, Edirne, Turkey Paris : International Sunflower Association., 764-768. https://hdl.handle.net/21.15107/rcub_fiver_2783
Dedić B, Maširević S, Jocić S. Variation in aggressiveness of Phoma macdonaldii isolates from three Balkan countries and Ukraine. in Proceedings, 19th International Sunflower Conference, 29 May - 3 June 2016, Edirne, Turkey. 2016;:764-768. https://hdl.handle.net/21.15107/rcub_fiver_2783 .
Dedić, Boško, Maširević, Stevan, Jocić, Siniša, "Variation in aggressiveness of Phoma macdonaldii isolates from three Balkan countries and Ukraine" in Proceedings, 19th International Sunflower Conference, 29 May - 3 June 2016, Edirne, Turkey (2016):764-768, https://hdl.handle.net/21.15107/rcub_fiver_2783 .