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Safflower (Carthamus tinctorius L.) is an important oilseed crop which is cultivated predominantly in semiarid and temperate regions of the world. In order to assessment of genetic variation, relationships between traits and phylogenetic clustering of genotypes, an investigation was conducted as a randomized complete block design with three replications and 20 safflower genotypes. The results of analysis of variance showed the significant differences among of genotypes for total of the studied traits including days to flowering, days to maturity, plant height, head per plant, seeds per head, main head diameter, 1000 seeds weight and seed yield per plant. Soviet union-1 genotype possessed the greatest values of total traits especially seed yield per plant that ranked this genotype as superior genotype. A high correlation coefficient (r=0.80*) was obtained between 1000 seeds weight and seed yield per plant. Cluster analysis classified genotypes into three distinct groups. Results of F Beele's type statistic showed that there was a significant difference between groups for all the studied traits except days to maturity, plant height and heads per plant. Generally, results indicated that clustering some foreign genotypes into Iranian group was due to their similar genetic basis and as well as it was suggested that Iran may be the origin of them.
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Author(s): Moslem Bahmankar Daryoosh Ahmadi Nabati Masood Dehdari Seyyed Hamid Reza Ramazani
Safflower, Cluster analysis, F Beele's type, Correlations coefficients, Biology