https://repository.utm.md/handle/5014/28953 Sun, 25 Oct 2026 19:13:23 GMT 2026-10-25T19:13:23Z https://repository.utm.md/handle/5014/37468 Evaluarea nivelului de ploidie la unele forme de porumb ce conţin gena Opaque-2 BATÎRU, Grigore; ŞESTACOVA, Tatiana; NECHIFOR, Victoria Porumbul (Zea mays L.) este o specie diploidă cu 10 cromozomi în setul de bază. Forme poliploide la porumb au fost obţinute pe cale experimentală. Din seria poliploidă experimentală a porumubului prezintă interes formele tetraploide (4x=40) care secaracterizează prin unele trăsături morfologice, fiziologice şi biochimice valoroase. Cu ridicarea nivelului de ploidie cantitatea de AND în celule se dublează şi respectiv sporesc dimensiunile celulelor. Studiile asupra formelor tetraploide de porumb, au demonstrat că volumul celulelor este dublu doar în fazele meristematice, ulterior atenuându-se odată cu diferenţierea celulelor. Aceasta presupune, respectiv, că cantitatea de ADN în unitatea de masă a ţesuturilor să difere la formele diploide şi tetraploide în dependenţă de diferenţa de volum a celulelor. Tue, 01 Jan 2013 00:00:00 GMT https://repository.utm.md/handle/5014/37468 2013-01-01T00:00:00Z https://repository.utm.md/handle/5014/37229 The effect of a pro-prebiotic additive on the quality of pig meat GROSU, Natalia; CAISÎN, Larisa; VRANCEAN, Vasile The research undertaken in order to determine the efficacy of the use of additives «Bilaxan», was conducted on growing pigs. To conduct the experiment on the basis of analogies, two groups of clinically healthy pigs, 30 head each, were formed. The first group served as the control group, and received the basic diet; in the fodder for the second group the probiotic «Bilaxan» in quantities of 0,30 kg/ t was added. The supplementation of the mixed fodder with the «Bilaxan» (0,30 kg / t) during the test period under production conditions has positively influenced the average daily gain of the young pigs during all growth periods (prestarter, starter, growing and finisher) respectively by 7.38; 13.72; 10.59 and 8.25%; and the absolute and average daily gain over the whole test period by 7.95 % and 7.30 % higher, with a feed consumption per kg, with weight gain by 7.53 % less compared to the animals in the CG. Compared to CG «Bilaxan» (0.30 kg / t) carcase weight increased by 6.46 %, efficiency at hot slaughter by 5.49 %, and the thickness of the fat layer decreased in the neck region by 10.9 %, the fat layer at the 6-7th thoracic vertebra decreased by 11.1 % and in lumbar region by 6.05 % compared to CG. Fri, 01 Jan 2021 00:00:00 GMT https://repository.utm.md/handle/5014/37229 2021-01-01T00:00:00Z https://repository.utm.md/handle/5014/37228 Morpho-physiological features of the action of the drug CCC 750 on winter wheat plants in crops SECRIERU, Silvia; DERENDOVSKAIA, Antonina; MIHOV, Dumitru The retardants preparations on cereal crops prevent lodging, help to level the height of productive stems, ensure their simultaneous ripening and affect the crop yield. The aim of the research was to study the effect of CCC 750 on the parameters of growth, photosynthetic activity and productivity of winter wheat in the conditions of the south of the Republic of Moldova. The drug is a growth regulator of the retardant type, the active substance of which is chlormequat chloride, in the concentration -750 g/l. The studies were carried out under the conditions of a field production experiment on sowing of winter wheat of the Kuyalnik variety of intensive type in the SRL "Terra-Vitis" of the Cahul region, on an area of more than 200 hectares. The period of application of the drug is the middle of tillering before the appearance of the first internode (stage 25-31). The consumption of the preparation is 1liter per 250liters of water per hectare. Control - without treatment of crops. The predecessor is winter rapeseed. In the main phases of ontogenesis exit into the tube and formation of an ear, determined the parameters of growth and photosynthetic activity of winter wheat plants of the Kuyalnik variety, at the end of the growing season - the elements of productivity and yield. We found that the use of the retardant type CCC 750 on winter wheat crops leads to a change in the growth parameters of shoots and leaf surface. So, in the heading phase, the height of the plants, the length of the stem change insignificantly, they are at the control level. Fri, 01 Jan 2021 00:00:00 GMT https://repository.utm.md/handle/5014/37228 2021-01-01T00:00:00Z https://repository.utm.md/handle/5014/37222 Studying the quality and safety of some types of refrigerated fish for public consumption PIRLOG, Alisa; CURCHI, Diana Food safety means involving all the factors and applying all the norms that support and ensure the sale of food products whose nutritional value and consumption are the basis of a healthy diet. Today, consumers are turning their attention towards the quality of the fish meat, on the one hand, and, on the other hand, towards healthy and safe fish meat. Therefore, the research was carried out on refrigerated fish assortments (Eviscerated trout - Salmo trutta, Sea perch-Perca fluviatilis, farm carp - Cyprinus carpio, farm zander - Sander lucioperca) for public consumption, in order to assess their quality and safety in accordance with the requirements of the standards in force. Thus, there have been obtained appreciable results, related to such organoleptic characteristics as: external appearance, consistency, odor, color that correspond to the requirements of the norms stipulated in GOST 20057-96 in force for this product, the same can be said about the physical and chemical indices, given that the value of repeatability does not exceed the limit of repeatability indicated in the standards to the test method. As to the microbiological indices, no pathogenic microorganisms were detected, which indicates the salubrity of the products under study. Tue, 01 Jan 2019 00:00:00 GMT https://repository.utm.md/handle/5014/37222 2019-01-01T00:00:00Z