Facultatea de Biologie și Geoştiinţe / Faculty of Biology and Geosciences

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Author: search.filters.author.Glijin, AlionaHas files: Yes

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    IDENTIFICAREA GRADULUI DE REZISTENŢĂ LA LUPOAIE (RASA E) ÎN CADRUL UNOR GENOTIPURI DE FLOAREA-SOARELUI
    (CEP USM, 2008) Duca, Maria; Glijin, Aliona; Popescu, Victoria
    Molecular markers linked to broomrape resistance genes would permit a better understanding of genetic determinism of broomrape resistance in sunflower and f acilitate early selection by screening the presence of a few specific DNA markers. We have provided analysis of 29 sunflower lines with SCAR marker RTS05 linked to the sunflower Or5 locus conferring resistance to broomrape that belong to race E. Identification of 650 bp amplicon at 27 genotypes reveal the presence of Or5 gene, missing of this amplified product at Xenia ♀ and cytoplasmic male sterile genotype # 7 suggest the susceptibility to race E.
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    VARIABILITATEA SOMACLONALĂ LA PLANTELE DE TUTUN TRANSGENIC
    (CEP USM, 2007) Duca, Maria; Glijin, Aliona; Lupaşcu, Victor; Orosco-Cardenas, Martha
    In this paper it was analyzed the somaclonal variation of 13 genetically modified tobacco lines (T1generation), that express the bar gene. It was shown that five lines had greater plant dimensions in comparison to the control ones. Also, in all transgenic tobacco lines there were detected higher accumulation of hydrogen peroxide invascular tissues. All these suggest that observed changes appeared as the result of plant transformation and regeneration at morphological and biochemical levels.
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    ASPECTE PRIVIND IMPACTUL POLUĂRII ASUPRA UNOR SPECII DE ARBORI DIN CINCI ZONE ALE mun. CHIŞINĂU
    (CEP USM, 2007) Duca, Maria; Port, Angela; Glijin, Aliona; Teleuţă, Alexandru; Casapu, Olga
    To date an unprecedented, rapid change in environmental conditionsis observed, which is likely to override the adaptive potential of plants, especially that of tree species with their long reproductive cycles. These environmental changes mainly originate from anthropogenic activities, which have caused air and soil pollution, acid precipitation, soil degradation, salinity, increasing UV-B radiation, climatechange, etc. Some of these stress factors may fluctuate signifi-cantly in intensity and duration on time scales of hours, days, seasons, or years;others may change slowly and gradually affect plant growth conditions. The aim of this review was to investigate the physiological response of three species of trees Acer platanoides L; Populus nigra and Aesculus hippocastanum L. from five sites zones with different pollution. There were analysed the following indices: dry weight and total water quantity, chlorophylls, carotenes and total proteins amount that gradually were affected. The significant variations of chlorophylls concentration demonstrate that the photosynthetic system is highly sensible to pollution factors. In conclusion, according to our assays the studied species of trees are stress tolerant to pollutants and can be used as bioindicators.