@article{article_1609797, title={Phenotypic Diversity of The Chestnut Genotypes in Yağlıdere District (Giresun, Türkiye)}, journal={Meyve Bilimi}, volume={12}, pages={18–30}, year={2025}, DOI={10.51532/meyve.1609797}, author={Pul, Nesrin and Bostan, Saim Zeki}, keywords={Castanea sativa, Kümeleme, Korelasyon, Populasyon, Temel bileşen, Varyasyon}, abstract={Phenotypic diversity and population relationships of chestnut genotypes (Castanea sativa Mill.) growing spontaneously in forested areas of Yağlıdere district (Giresun, Türkiye) were investigated according to fruit traits. In 7 different populations where chestnut trees are dense in the region, 15 healthy genotypes and 105 genotypes in total were evaluated for 14 fruit traits. It was determined that the coefficient of variation was less than 20% except for nut and kernel weight. Correlation analysis revealed that 56 out of 91 relationships were significant and 51 of them were positive. The highest positive relationships were found between nut weight, kernel weight, kernel percentage, nut height and nut length. Only nut height/nut length ratio and stalk base length showed significant variation among populations. In within-population principal component analysis, the first four principal components explained 77.38% of the total variance. The relationships between the first principal component and nut width, nut length, nut height, the distance from the base to the largest section of the nut, nut weight and kernel weight were found to be high and positive. In the principal component analysis between populations, the first four principal components explained 88.98% of the total variance. The highest positive correlation was shown by scar length/scar width and nut height in the first principal component, nut length and distance from the base to the largest section of the nut in the second principal component, scar length and scar length/nut length in the third component and nut width in the fourth component, respectively. Cluster analysis divided genotypes into 12 clusters and populations into 2 clusters. In conclusion, principal component and clustering analysis explained the phenotypic diversity of 105 chestnut genotypes in the natural population in Yağlıdere district according to fruit traits and population relationships explained the whole phenotypic variation among genotypes.}, number={1}, publisher={Meyvecilik Araştırma Enstitüsü}