Determination of the development performance and rootability of some clonal rootstocks in different media

This study was carried out at the nursery of soilless culture media and rooting greenhouses of Adnan Menderes University Faculty of Agriculture Department of Horticulture during two different periods, late spring in 2006 and early spring in 2007. The aims of this study were the determination of growth performance and rootability of the cuttings of nine different clonal rootstocks in zeolite and pumice, and the investigation of root primordium formation in rooted ones. While the maximum rooting percentage (87.7%) was seen in Pixy which used in late spring in zeolite, the minimum rooting percentage (1.1%) was seen in M9 which used in early spring. There was not seen any rooting in Maxma14 and GF677 in both periods, neither that was in M9 which used in early spring in pumice. While the maximum diameter increment and shoot development were seen in SL64 which used in late spring in pumice, the maximum root development was obtained in MM111 which used in late spring in zeolite. In the anatomical investigations, the earliest root primordium formation was seen in M9, MM106 and QuinceA in the third week.