Abstract Sweet chestnut forests in Bosnia and Herzegovina are underrepresented in the total forest fund, and their area is declining today. The research aims to determine the correlation relations of morphological traits of chestnut leaves, fruit and cupule in the population of Bosnian Krajina (northwestern Bosnia and Herzegovina) to undertake selection and breeding activities. Eleven traits of fruits, leaves and cupules were measured, seven assessed and six calculated. A mutual correlation for the researched traits was calculated using the Pearson correlation coefficient r. When the fruit traits and cupule traits were compared, the needle length showed a statistically significant correlation with most of the fruit traits. The traits of the number of fruits in the cupule and needle length had a statistically significant correlation coefficient with leaf blade width and leaf petiole length. The correlated traits can be distinguished as important for further selection and breeding of sweet chestnuts. The research results indicate that the genetic material of sweet chestnut is a rich source of genetic diversity and can be used in selection to obtain new varieties and cultivars in Bosnia and Herzegovina and for the protection of the indigenous gene pool.

The water from wells and running water in different rural parts of Ankara were analyzed microbiologically with the thought in mind that the use of unhealthy well water could cause infections, as shown in other cities. We found that of the 50 running water samples all (100%) were drinkable from the microbiological point of view regard to coliform bacteria and total germ count, while only 20 of the 150 well water samples (13.3%) met these standards. It was pointed out by the users that chlorination was carried out in only 22 of the wells (14.6%) and only irregularly; no coliform bacteria were found in water samples from these wells. In 117 well water samples (78%) 120 coliform bacteria strains were isolated, of these 80 were E. coli, 27 Enterobacter and 13 Citrobacter. All samples were analyzed for Giardia intestinalis cysts but found to be negative.