Khajeddini, Seyed Mohammadali. Evaluation of phenotypic diversity of hawthorn plant ( Crataegus spp. ) by using digital colorimetric technology (RGB model) and the method of investigating fruit appearance traits in Sahand protected area in East Azerbaijan province.. Iranian Journal of Biological Sciences. 2023;17(3):1-18. doi:10.30495/zisti.2023.1972812.1142