Fresenius Environmental Bulletin, vol.30, no.6, pp.7735-7742, 2021 (Journal Indexed in SCI Expanded)
The Taurus cedar (Cedrus libani A. Rich), which has natural distribution areas decreases due to human impact, is an important part of biodiversity globally. Taurus cedar is one of the species that must be subject to genetic-breeding studies in order to sur-vive by strengthening against biotic and abiotic dam-ages. Fertility variation is a genetic parameter that is preferred and used in genetic-breeding studies be-cause it is cheap and easy. In this study, in southern Turkey, Fethiye-Babadag and Antalya-Elmali natu-ral spread in the region of Taurus cedar populations were examined. The relationships between repro-ductive traits (strobilus, cone and seed productions) and growth traits (height, diameter at breast height, crown diameter) of 200 individuals from four popu-lations were determined and to estimate some ge-netic parameters (maleness index, fertility variation, effective number of parents and relative effective number of parents). Although the populations showed similar characteristics in terms of growth characteristics, large differences were found in terms of strobilus and cone production. Seed production was similar in populations. The maleness index was 0.8 in all sampled populations. In the populations, while the coefficient of fertility variation based on seed production was lower, the effective number of parents and relative effective number of parents were higher. The fertility variation coefficient estimated based on cone production varied in terms of good crop year. As a result of the correlation analysis ap-plied, significant (p <0.05) and positive relation-ships were determined between growth and repro-ductive characteristics.