https://repository.utm.md/handle/5014/28973 2026-10-16T12:10:02Z https://repository.utm.md/handle/5014/37245 Influence of ecological conditions on the physiological parameters of leaves and the productivity of the grapevine Bianca variety DERENDOVSKAIA, Antonina; GRIBCOVA, Аnna Environmental factors greatly influence grape quality. Grapes are a plastic plant, characterized by high responsiveness to changing environmental factors. The vineyard was divided vertically into three sites (lower, middle and upper) and other yield and quality parameters were recorded. The influence of relief elements (the exposure of the slopes and the location of bushes on them) on the morphological and physiological parameters and productivity of the Bianca variety bushes was investigated in the conditions of the Central Viticulture Zone of the Republic of Moldova. It was established that the parameters of the photosynthetic activity of the leaves - the content of plastid pigments and the induction of chlorophyll fluorescence (ChlFI) change in ontogenesis. It was presented, that the concentration of plastid pigments in the leaves increases during the flowering and growth phases of berries and decreases during the ripening phase. The level of chlorophyll a, b and carotenoids in the leaves varies, depending on the exposure of the slope and the location of bushes on them. It increases on the slopes of the SW and W exposures, compared with the NE, especially when growing in the lower, less lit areas of the slopes. At the same time, changes in the parameters of chlorophyll fluorescence induction (ChlFI) in the leaves of the Bianca variety were studied in connection with their adaptation to changing environmental conditions, which can be used for monitoring the physiological state of grape plants when they grow on the slopes of different exposures. 2020-01-01T00:00:00Z https://repository.utm.md/handle/5014/37233 The productivity and quality of new apple varieties depending on the biological characteristics of the variety in the conditions of the Republic of Moldova BILICI, Inna; BALAN, Petru This paper deals with new apple varieties grown in the Republic of Moldova, namely in the experimental orchards of the Elite Fruit Ltd and the Spica-N Agro Farm Cooperative. A continuous increase of efficiency in modern cropping systems, i.e. early fruiting and short exploitation time, can be achieved by introducing highly productive varieties from the world collection and knowing the natural potential of a horticultural zone and the cultivation technology. The Granny Smith, Gala Delicious, Gala Buckeye Simmons, Golden Delicious, Golden Delicious Reinders, Red Velox and Fuji Kiku apple varieties, grafted on the M9 rootstock and used in high-density orchards, which are cultivated in the central region of the Republic of Moldova, were studied. High emphasis has been placed on the promotion of new varieties and sustainable cultivation systems that produce qualitative and healthy fruit in areas where the climate, soil and biocenosis correspond to the requirements of the cultivated species, and that are highly efficient economically as well. 2021-01-01T00:00:00Z https://repository.utm.md/handle/5014/37231 The influence of postharvest calcium application in hydro-cooling water on physiological and biochemical parameters of sweet cherries of Kordia and Regina varieties LOZAN, Andrei The short harvesting season together with the soft texture, limit the availability of high quality sweet cherries on the market for longer period. In order to have high quality fruits, it should be applied by farmers in the orchard, but has a higher absorption rate while application in the postharvest hydro-cooling water. The aim of following study was to investigate the influence of calcium chloride (CaCl2) added to hydro-cooling water on physiological and biochemical parameters of Kordia and Regina sweet cherry varieties. The research was carried out in 2020. The tested CaCl2 concentration in water at 0o C was 0,2%; 0,5%; 1,0% and 2,0% where the sweet cherries were immersed during 5 min. After hydro-cooling, fruits were stored in modified atmosphere packages produced by Stepac, Israel for 2 and 4 weeks. It was established the gases and atmosphere balances in packages and the organoleptic, physiological and biochemical parameters of fruits. The increase of Ca content in hydro-cooling water in comparison to control showed improvements in weight stability, acidity, firmness, soluble solid content and vitamin C with the best results at 0,5% and 1,0% CaCl2 content. Pedicel browning was reduced by CaCl2 at 0,2% and 0,5%, but presented higher effect at 1,0% and 2,0%. 2021-01-01T00:00:00Z https://repository.utm.md/handle/5014/37221 Application of gibberellin on table grapes varieties under the conditions of the south of the Republic of Moldova DERENDOVSKAIA, Antonina; MIHOV, Dimitri; SECRIERU, Silvia Were carried out production tests of the action of gibberellin (GA3) on the morphological and biological indicators and productivity of some table seed grape varieties in the soil and climatic conditions of the southern zone of the Republic of Moldova. Research conducted in the SRL «Terra-Vitis» of the Cahul region, on zones varieties Cardinal, Codreanca, Muscat Hamburg, Presentabil (Avgustin), grafted on rootstock Berlandieri × Riparia SO4 (BxR SO4).We used the preparation Gobbi Gib 2LG, of the company LGobbi SRL Italia, the active substance of which is gibberellin A3 (GA3 - 2%).The treatment of inflorescences with gibberellin at doses 50 ppm, was carried out at the stage of post-fertilization (3-5 days after flowering), with a diameter of berries of 3- 5 mm, locally (only the inflorescence zone). It is shown that the use of gibberellin on the studied grape varieties leads to a change in the morphological parameters of bunches, berries and productivity of the varieties.There is an increase in the size and mass of clusters, berries in the cluster and ridge. Due to the increase in the mass of the ridge, occursdecrease in the index of the structure of the bunch (the ratio of the mass of pulp to the mass of the ridge).Under the actionthe influence of gibberellin in seed grape varieties, the number of berries in the bunch increases.In berries, the number of seeds decreases and the seed index increases (the ratio of pulp mass to seed mass) up to 2 bout, depending on the variety. In the juice of berries in varieties of early ripening (Codreanca, Cardinal, Presentabil), the sugar content increases and the concentration of titratable acids changes. There is an increase in the yield of varieties and planting productivity in 1.3-1.5 bout, compared with untreated plants.At the same time, in some varieties (Codreanca) when using gibberellin, the transportability of bunches decreases due to the weak attachment of berries to the crest and their shedding. 2019-01-01T00:00:00Z