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Author: search.filters.author.Lupascu, GalinaHas files: Yes

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    Research on the interaction peculiarities of common wheat with Fusarium Oxysporum isolates [Articol]
    (Editura USM, 2025) Cristea, Nicolae; Lupascu, Galina
    The purpose of the research was to establish the cluster organization of Fusarium oxysporum isolates, collected in different localities of the Republic of Moldova, the variability and heritability of wheat plant growth and development traits in interaction with the pathogen. Methods for isolating and identifying fungi, preparing culture filtrates, infecting plants, morphometric, and statistical data processing were applied. Treatment of common wheat grains with culture filtrates of 9 F. oxysporum isolates, demonstrated their different virulence, which allowed their successful classification into clusters with different pathogenic potential. Factorial analysis of the weight of plant genotype, F. oxysporum isolate and their interaction in the source of variation of growth characters demonstrated that the genotype recorded: 48 ... 63%, the isolate factor: 17 ... 23%, the genotype x isolate interaction – 11 ... 23%. Relatively high values were recorded for the heritability coefficient in the broad sense (0.53 ... 0.69) and genetic advantage (13.39 ... 24.74%) for growth and development traits in the interaction of common wheat with F. oxysporum isolates, which reveals the high opportunities for creating resistant wheat genotypes in limited terms.
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    Influence of the Fusarium oxysporum fungus on the transgressive potential of growth traits of common wheat [Articol]
    (Editura USM, 2025) Lupascu, Galina; Cristea, Nicolae; Gavzer, Svetlana
    The purpose of the research was to establish the reaction of 7 parents, 4 pairs of F2 hybrids of common winter wheat, obtained based on 4 pairs of reciprocal F1 hybrids, and the transgressive potential of growth and development organs to the treatment of grains with Fusarium oxysporum culture filtrate. The pathogen was isolated from wheat plants with root rot symptoms and identified by macro- and microscopic methods. The culture filtrate (CF) was prepared on the basis of Cszapek liquid medium. After treating the grains for 18 hours with CF, the seedlings were cultivated for 6 days, after which morphometric analyses of growth characters were performed. Plant distribution histograms were analyzed according to variant and character. The degree (Tg), the frequency (Tf) of transgressions were calculated and the important role of the plant-pathogen interaction mode, the parental factor in the spectrum of phenotypic classes and transgressive manifestations in segregating populations were found.