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Investigating the Phenological and Pompological Characteristics of Indigenous Pears in Northeast Bosnia

The study included 30 autochthonous pears with analysis of the following parameters: blooming time, fruit ripening time, fruit weight, fruit height, fruit width, fruit index, fruit juice length, pH value of juice, total acidity mmol / 100 g, total acidity (%), pectin substances % Ca-pectate, raw fiber %, vitamin C mg / 100 g, natural invert sugar%, total invert sugar %, total phenol mg / 100 g fruit, soluble dry substance (° Brix).The aim of the research is to study the phenological and pomological characteristics of a detailed description of autochthonous varieties and to make chemical analysis of the fruit of a recommendation on the value of the fruit of the most interesting autochthonous pears in north-eastern Bosnia. This would at the same time create preconditions for recording these varieties on the sort list of Bosnia and Herzegovina and their further reproduction and marketing.The fruits of domestic varieties are seldom available. Given the opinion that domestic varieties are more resistant to diseases and some pests, they do not require a large number of chemical treatments and require no intensive care can be more easily adapted to organic cultivation, which is a trend in fruit productionThe differences in the blooming dynamics of autochthonous varieties of BiH indicate that this is an important detail that must be take care  when expanding them, that is, introducing them into plantation cultivation and selecting pollinator varieties. The obtained values of soluble dry matter for all tested pear varieties (except Kajzerica kasna 9.75 Brix) had a value greater than 10.0˚ Brix, and according to this parameter, are suitable for marketing and processing according to the current legislation. The native varieties examined in this paper had values from 0.10 to 0.58% from the results of the analysis, it can be concluded that the tested varieties were not supplied with Ca-pectate. Based on the average content of vitamin C in the fruit of the pear, it can be concluded that the tested  autochthonous  and domestic varieties have an extremely good content of vitamin C, 15 out of 20 varieties have a higher content of vitamin C than the average or 75%. Research has been supported by the Federal Ministry of Education and Science within the framework of a scientific research project entitled "Investigating the phenological and pompological characteristics of indigenous pears in Northeast Bosnia".