بررسي تنوع ژنتيكي موجود در توده‌هايي از شبدر ايراني (Trifolium resupinatum)

Investigation of genetic variation between Trifolium resupinatum populations

For identifying the genetic variations in Iranian T. resupinatum germplasm, 120 Persian clover accession were planted in the field in 1381. agro-morphological traits of each accession were evaluated according to white clover and forage legume descriptors. Data were analyzed by SPSS and Excel softwares. Statistical tendency parameters for agro-morphological traits were calculated. Coefficient leaf stem ratio showed a high correlation with plant height, so the taller the accession is, the higher the leaf stem ratio. Date of flowering showed high diversity (70 to 114 days). According to this trait, there are good materials as breeding sources and this is possible to release some Persian clover varities which would be suitable for different climatic condition. Factor analysis have shown that 63.25% of collection variation are expressed by 10 factors. In first factor, plant height, date of flowering and weight of 1000 seeds showed 17.1% of variation. Cluster analysis showed that genetic variation is independent from geographical distribution. This research showed that genetic diversity in the Persian clover is very high, so that they could be used as breeding source for different purposes.