Evaluation some almond genotypes under Karaj condition

This research was conducted to study some vegetative and reproductive traits as well as qualitative and quantitative characteristics and their correlation in 80 almond genotypes. Qualitative traits were studied according to gulcan descriptor. Quantitative traits were analyzed as completely randomized design (CRD)، with 12 replications. The results showed that genotypes had significant difference in fruit، nut، kernel weight and kernel to nut weight ratio. No169 genotype was very late blooming and had large size and moderate quality fruits. Fruit، nut and kernel weight in this genotype were 12. 50، 4. 75 and 1. 28، respectively. Kernel of this genotype was sweet with low shriveling، which are important of consumer acceptance. The traits correlation showed that fruit، nut and kernel weight and size، had significant positive correlation together. Also، kernel taste had significant negative correlation with pubescence، shriveling and color intensity of kernel. Results of cluster analysis showed that، in Euclidean distance of 25، all genotypes were divided into two main branches. With decrease in the Euclidean distance from 25 to 5، the genotypes were divided into eight main subclusters. Cluster analysis revealed that the traits of tree high and growth vigor، fruit، nut and kernel size and shell sofftness and hardness were the main characteristics separating the genotypes.