Ampelometric, Genetic and Sanitary Evaluation of CV. Vranac
AbstractVranac is autochthonous grape variety of Montenegro, being of significant importance for Montenegrin economy. Grape of this variety has been used for the production of red wine of top quality, very appreciated at the domestic and foreign market. Researching was done during three years in three locations in sub-region Podgorica. Beside ampelometric and uvologic indicators for vranac variety, average sugar content and total acids in must (22.08% and 4.95 g/l). Based on three years of investigation, an average largest number of bunches is noticed in population of vranac variety in location Nikolj crkva and the largest weight of bunch is measured in location Cijevna. The largest yield of grape per vine is reached in location Nikolj crkva. The content of total anthocyanins is medium high while the value of total flavonoids is high. Total polyphenols, proantocyanidols and flavans which react with vanilla reached medium values in years of researching. Using Elisa test, samples were tested for viruses: Arabis Mosaic virus (Ar); Fanleaf (FL); inf.mix (F+GVA+Lr3); Fleck virus (K), inf.mix (GVA+Lr3); Leafrool virus type1 (LR1); Leafrool virus type3 (LR3); inf.mix Lr1 + Lr3 (Lr1+Lr3). Turned out that of 145 tested samples 17 genotypes (11.72 %) are negative in virus testing. After Elisa test, these 17 samples were analyzed by PCR and indexing after which 4 genotypes (23.53 %) passed complete sanitary control and entered the individual clone selection procedure. The content of total anthocyanins is medium-high, while the value of total flavonoids is high. Total polyphenols, proanthocyanidol and flavans which react with vanilla have reached medium values in examined years.
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