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Populacije slobodne oplodnje kao izvori gena otpornosti prema pegavosti lišća šećerne repe - Cercospora beticola Sacc
Open polinated populations as gene pool for Cercospora leaf spot (Cercospora beticola sacc.) resistance genes
Naučni institut za ratarstvo i povrtarstvo, Novi Sad, Srbija
Sažetak
Pegavost lišća šećerne repe je ekonomski najvažnije oboljenje šećerne repe u agroekološkim uslovima Vojvodine. Bolest je prouzrokuje gljiva Cercospora beticola Sacc. Ispitivane su tri diploidne multigemrne populacije koje su korišćene kao oprašivači, šest citoplazmatski-nuklearno muško sterilnih linija koje su korišćene kao majke i osamnaest F1 hibrida. Roditeljske komponente su se razlikovale u stepenu otpornosti. Tokom 1999 godine ocenjena je poljska otpornost genotipova prema Deskriptoru za rod Beta. Polu srodnici oprašivača 2076 pokazali su najviši nivo otpornosti (3,9) prema obolenju.
Abstract
Cercospora leaf spot is the most economically important disease of sugar beet in agro ecological conditions of Vojvodina Province, Northern part of Yugoslavia. The disease is caused by the fungus Cercospora beticola Sacc. Three diploid multigerm populations as pollinators and six citoplasmic male sterile lines (cms) and their F1 hybrids were estimated. Pollinators and cms lines differ significantly for Cercospora leaf spot resistance trait. During 1999 F1 hybrids and parents were assessed for Cercospora leaf spot tolerance according to Descriptor for Beta. Hal sib families of pollinator 2076 shoved lowest value, highest resistance level, (3,9) for cercospora leaf spot infection.
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