شناسايي ژنوتيپ هاي مقاوم به خشكي در آفتابگردان (HELIANTHUS ANNUUS L) با استفاده از شاخص هاي مقاومت ، نمودارها پراكنش دوبعدي و سه بعدي

A Study of In-vitro Genetic Diversity and Phenotypic Correlations between Microtuherization Characters under Saline and non-Saline Conditions some of Potato Cultivars

the effects of salinity (NaCI) in-vitro on microtuberization and investigated genetic diversity under saline and no saline conditions in potato, twelve cultivars (clones) of potato named Rangerrusset, AGB-69-1, MEX-32, Maine·28, Loman, Araucana INTA, Surena INTA, American-INTA, Aracy, FLS-5, Agria and Marphona, were planted in the greenhouse. Young shoots were cut and transferred to Tissue Culmre Laboratory of Agricultural Biotechnology Research lnstitute. Apical and axillary meristems were cultivated on MSmedium and samples were subcultured every four weeks on the 5W1le medium for plantlet production. Plantlets were then propagated through single nodal culture. To study the effects of salinity on microtubcrization, they were cultivated on MS media with different concentrations of NaC! including 0, 25, 50. 75 and 100 m mol 11. Microtuberization response On different saline media wasalso different and indicated that all the studied characters, except the number of microtubers and the mean minimum microtuber diameter, had significant difference at P