Volume 26, No. 1 (2017)
Articles
STUDIES REGARDING SOME QUANTITATIVE TRAITS OF “CREOLICA”, ROUND PEPPER VARIETY
CREOLA BREZEANU(1), SILVICA AMBĂRUŞ(2), PETRE MARIAN BREZEANU(2), MARIA CALIN(2)
The purpose of this paper is to present a study of the variability of the main characters in the round pepper species and at the same time to emphasize the significance of this variability for conservative selection work. The annual maintenance of the varietal qualitative and quantitative characteristics in order to ensure identity, uniformity and stability is achieved through conservative selection work. Our study on the “Creolica” round paper variety showed different variability within the investigated characters as follows: • low, for the height of the plant. with% ≤ 10; • average for the length, diameter and weight of the fruit, s% between 10-20%; • high (s% ≥ 20) for the index: fruit / plant weight. The data presented showed that the "Creolica" round pepper variety is stable, distinct and is within normal limits of variability.
PLANT EVOLUTION IN THE PERIMETER OF LAKE ŞERBĂNEŞTI - BACĂU
MILIAN GURĂU, BOGDAN BONTAŞ
In the present study, we analyse the cormophyte vegetation from the perspective of ecological monitoring actions, in a basin of a micro-hydropower plant situated where the Bistrita River discharges into the Siret River, a basin which is part of an avifaunistic protected area. There have been identified plant associations which are comprised in the following habitats: 3150-natural eutrophic lakes with Magnopotamion or Hydrocharition vegetation; 3270 – Rivers with muddy banks with Chenopodionrubri p.p. and Bidention p.p. vegetation; 92A0 –Salix alba and Populus alba galleries. The factors responsible for disturbing the ecological balance of this sector of the Bistrita River are: floods, vegetation successions, grazing, frequent use of footpaths, tourism, vandalism, fishing, plastic objects thrown into water and carried along, trash, etc.
DOCUMENTATION, EVALUATION, AND USE OF HOT PEPPER FRUITS CAPSICUM ANNUUM VAR. ACCUMINATUM IRISH AS MEDICINAL SPECIES
CREOLA BREZEANU(1), SILVICA AMBARUS(1), PETRE MARIAN BREZEANU(1), TEODOR ROBU(2), AURELIA DOBRESCU(3)
The value of the hot pepper species is given by its food and therapeutic role, due to the complexity and diversity of biochemical constituents. Worldwide, the species enjoys increasing attention and is the subject of numerous physico-chemical, agrobiological and pharmacological research. The study presents the results obtained through the investigations carried out on a collection of hot peppers under the ADER 2020 project "Regeneration, multiplication and characterization of traditional plant resources". Our investigations have assumed phenological observations, biometric measurements and physiological determinations, in order to evaluate valuable germplasm resources to be introduced into amelioration programs.
ASPECTS CONCERNING THE MORPHOGENETIC REACTION OF SOME EXPLANTS OF LAVANDULA STOECHAS ‘ANOUK’ CULTIVATED IN VITRO
DANIELA NICUŢĂ
The Lavandula genus belong to the family Lamiaceae and comprises 39 species of aromatic plants. Many species of this genus are grown both as decorative plants and for the essential oil extracted from flowers and leaves. Vegetative propagation of lavender plants is produced with very low yield. Numerous researches have attempted to identify a protocol for micropropagation of different species of lavender and these suggests that the most effective method is propagation from axillary or terminal buds. Our observations led to the following conclusions: the best reaction highlighted was callusogenesis followed by caulogenesis. Lavender callus formation was highlighted in the medium supplemented with 2,4 D in various concentrations. On various hormonal formulas, the callus generally has a good proliferative capacity, but no regeneration capacity of new shoots. The emergence of shoots is a phenomenon that occurred with low intensity, caulogenesis being observed only on media supplemented with a reduced amount of auxins, in the presence of BAP.
PRESERVATION STATUS OF THE BLUEBERRY (VACCINIUM MYRTILLUS) IN THE NEMIRA MOUNTAINS
DIANA – ELENA MAFTEI(1), DANIEL – IOAN MAFTEI(2)
The blueberry is a shrub of the Ericaceae family with many therapeutical effects due to the high level of antioxydants in its fruits and leaves. In the mountains of Nemira it is spread in the subalpine area at an altitude starting with 1500 m.
EXOGENOUS CARBOHYDRATE UPTAKE BY TOMATOES EXPLANTS CULTIVATED IN VITRO FOR MASS PROPAGATION
TINA OANA CRISTEA(1), MARIA PRISECARU(2), SILVIA AMBARUS(1), MARIA CALIN(1), CREOLA BREZEANU(1), MARIAN BREZEANU(1), GEORGE FLORIN ŞOVA(1)
In order to investigate whether the type of carbohydrate used as a carbon source might affect the efficiency of regeneration, a complete screening of the main types of carbohydrates in different concentrations were tested. The study was conducted at Vegetable Research and Development Station Bacau, in The Laboratory of Tissue Culture. The explants were collected from valuable mother plants maintained at Vegetable Research Station Bacau in controlled conditions. The results obtained demonstrate without doubt that among the different carbohydrates used, maltose is the most efficient in inducing multiple shoot number, followed by sucrose, glucose and fructose. The maximum mean shoot number (22.0 ± 0.10) was recorded at 3% maltose, with maximum frequency of shoot regeneration (78%). Sucrose also obtained very good results, as it promoted a shoot regeneration frequency of 70%, with a maximum nember of shoots per explant of 19.20 ± 0.16.
THE BEHAVIOR OF SOME PLANT SPECIES TO ATTACK OF TWO-SPOTTED SPIDER MITE
CĂLIN MARIA(1), TINA OANA CRISTEA(1), SILVICA AMBARUS(1), CREOLA BREZEANU(1), PETRE MARIAN BREZEANU(1), MARIA PRISECARU(2)
The two-spotted spider mite frequency attack in pepper ranges degree attack between 10.3 – 38.4%. The intensity of attack was higher in second decade of September - 30.9%. The degree of attack was between 0.5 and 17.5%. The frequency of two-spotted mite in melon was higher, ranging between 6.5 % and 78.6%. In the July, August and September the F% was the highest – 10.5 – 78.6%. The intensity of pest attack has grown up in second decade of June at 8.3% and it continued to grow until the third decade of September. The degree attack had the same upward dynamics: it began on the third decade of August and it was ranged between 11.3 and 61.3% The pest attack in climbing bean in open field began in first decade of June, frequency of attack being 0.1 %. From the first decade of July to third decade of September it had reached between 8.7 – 73.2 %. The intensity of the attack in climbing bean was also high in this period, ranging between 26.7 and 100%. The pest attack in tunnels of climbing bean was high and it began the third decade of June. The % of plants without symptoms of attack varied a lot. It can be seen that it begun in: the 1st decade of July at pepper; second decade of August at melon; second decade of July at climbing bean in open field and first decade of July at climbing bean. Starting from than, treatments are needed to control of two-spotted spider mite attack. The climbing bean in tunnel had the highest frequency, intensity and degree attack of pest. The % of climbing bean plants, without attack in open field and tunnels, has declined greatly since July, and it remained constant in August and September. Pepper and melon had the highest number of plants without pest attack.
CONSIDERATIONS ON THE EVOLUTION OF ECOLOGICAL STATUS OF THE CIOBANUS AND UZ RIVERS
FLORIAN PRISECARU(1), GABRIEL ALIN IOSOB(2)
During 2003-2008 and in 2014 the monitoring of the Ciobănuş, Uz and Slănic rivers, important tributaries of the Trotuş River, was carried out. Variations in water physico-chemical indicators (thermal regime and pH oxygen regime, nutrients, salinity, toxic pollutants and other relevant chemical indicators) have been taken into account in the study sections at the time of collection, according to ORDIN No. 161 of 16.02.2006 and some assessments have been made on the ecological state of the rivers. Water quality in all collection sections was kept clean (Class II quality) as a result of the legislative measures that have been taken on the restoration and protection of aquatic ecosystems.
MONITORING OF CADMIUM (Cd) IN TROTUŞ HYDROGRAPHIC BASIN
FLORIAN PRISECARU(1), GABRIEL ALIN IOSOB(2)
In the period 2010-2015 the monitoring of the incidence of Cd and its compounds in the waters of the Trotuş River and its main tributaries (Uz, Urmeniş, Tazlăul Sărat, Tazlău, Slănic, Plopu, Oituz, Izvorul Alb, Ciobănuş, Caşin, Asău) was carried out. There have been some exceedances of acceptable Cd concentrations during the 2010-2011 monitoring period, on the Uz River and the Izvorul Alb - upstream section of Lake Poiana Uzului. In the following years, 2012-2015, in all monitoring sections, Cd and its compounds concentrations were within or below the detection limit of the analyzer.