Indigenous fruit varieties are the wealth and natural resource of every country. Their importance is reflected, in addition to economic and biological, through the growing consumer interest in consuming fruits produced without the use of chemicals. Proper and accurate identification and preservation of valuable assortment has resulted in studies of the physicochemical and pomological properties of the fruits of ten pear varieties and their comparison with standard varieties. The usable value of pear fruits is multiple. It is used for liqueurs, vinegar, fruit salads, jams, jam, as dried fruit. The aim of the study is to determine the pomological and chemical properties of indigenous pear varieties and their comparison with standard pear varieties grown in northern Bosnia. The size of the fruit was quite different in the tested varieties and ranged from very small to extremely large fruits with the content of total acids slightly lower than the standard varieties. The research was supported by the Federal Ministry of Education and Science as part of a scientific research project entitled "Investigation of phenological and pomological characteristics of indigenous pear varieties in north-eastern Bosnia".
Organic farming takes up more and more areas in agricultural production. It is based on the principles of preserving human and animal health and maintaining the balance in agrobiocenosis and therefore prohibits the use of a majority of water-soluble mineral fertilizers and phytopharmaceuticals of chemical origin (except those from the list of allowed products). In ecological farming of plums, optimization of fertilization is very important, which must comply with ecological principles and regulations which included fertilization with a relatively narrow range of allowed organic fertilizers (manure, compost, manure, slurry, peat, guano, sawdust) and mineral additives (calcium carbonate, crude phosphates, basic slag, raw potassium salt, potassium sulphate, gypsum, wood ash, calcium chloride, sodium chloride, etc.). Nutrition methods in organic plum production are different from nutrition in conventional production, primarily due to a limited selection of available fertilizers, and the most important difference is the inability to use water-soluble individual and complex fertilizers. It is precisely for this reason that in organic agriculture, the emphasis on maintaining humidity, optimum pH and soil moisture is considerably more important than necessary prerequisites for sufficient availability of nutrients in the soil.
The major method of propagation of varieties and hybrids of Paulownia elongata is vegetative (asexual) method. Paulownia elongata can be propagated by macropropagation techniques (root cuttings, green cuttings and by micropropagation technique, tissue culture or in vitro. Today the tissue culture method is the most modern biotechnological method. In Bosnia and Herzegovina and regions of former Yugoslawia, more and more Paulownia elongata seedlings are being produced and new plantations of Paulownia elongata areestablished. This paper deals with the methods of propagation and problems in raising Paulownia elongata planting materials. The work aims to produce seedlings of fast-growth Paulownia elongata, Shan Tong hybrid and the possibility of propagation through different methods. Propagation by green cuttings, root cuttings and in vitro propagation was tested. After 15 days, the percentage of rooting for the green cuttings was 100%, and there were no dead plants, the average number of roots was 13.86 pcs per plant and roots were of different lengths. The length of the cuttings had an impact on the growth of plants because Original Research Article
Pear as a fruit species has a special place because of its quality characteristic. The fact that about 20,000 pear seedlings are considered to be sold annually in Bosnia and Herzegovina, which are autochthonous or spontaneously expanded varieties, also speaks in favor. The main goal of this research is to analyze the genetic variability of nine autochthonous pear varieties in Tuzla Canton, Bosnia and Herzegovina to enable the conservation and expansion of existing genetic resources. The study included nine autochthonous pear varieties. Samples of young leaves were collected on the following localities: the town of Srebrenik, the town of Gradačac, the municipality of Čelić-Tuzla Canton, Bosnia and Herzegovina, in the spring 2019. To determine genetic diversity, 12 SSR (Simple Sequence Repeats) markers were genotyped. There were no cases of synonyms or homonyms in the analyzed set. Each of the nine tested varieties represents a unique genotype. Autochthonous pear cultivars analyzed in this paper represent an interesting genetic resource, with useful agronomic traits that can be used in future cultivation.
Aims: The basic precondition for apple breeding is the genetic diversity of varieties, which implies a large number of different, positive genes that enable adaptation to different weather conditions, resistance to new diseases and pests. One of the reliable sources of genetic diversity are indigenous varieties of Bosnia and Herzegovina. Their genetic identification is the first step in a process that has as its ultimate goal the collection of genetic material. The main goal of this research is to analyze the genetic variability of five indigenous varieties of apple in Tuzla Canton, Bosnia and Herzegovina in terms of contributing to the management of conservation and expansion of existing genetic resources, spreading this material through registered nurseries. Study Design: The research included fiveautochthonous apple varieties: "Ovčji nos“ “Dobrić“, "Šarenika“, "Rančica“ and "Petrovača“. Place and Duration of Study: Samples of young leaves were collected at the site of Donji Moranjci, City of Srebrenik,Tuzla Canton, Bosnia and Herzegovina in the spring of 2019. Methodology: In order to determine the genetic diversity of five indigenous apple varieties were genotyped ten SSR(Simple Sequence Repeats) markers. Results: No cases of synonyms or homonyms were found within the analyzed set.The results of the study indicate a pronounced differentiation, ie all five examined varieties represent unique genotypes. Conclusion: The examined sets of genotypes possess significant genetic variability, which is important especially when we consider that a relatively small number of samples have been analyzed.
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