Interactions between Rootstock and Scion Growth and Productivity of Peach

The study was carried out during a period of 7 years at the Research Station for Fruit Growing Constanta, Romania. An experimental orchard was planted in Spring 1997, at 4.5x4 m, to investigate the interactions between 5 rootstocks and 2 cultivars ('Springcrest' and 'Redhaven'). The rootstocks tested were T16 and 4 intraspecific hybrids: Tomis 39 (T16' x Hui Hun Tao), H.CT. 83. 07. 024 (T16 x Siberian C), H.CT. 84.13.005 (Bailey x Siberian C) and Tomis 28 (T16 x Bailey). We evaluated production per tree and hectare, trunk cross-sectional area, shoot growth, average fruit weight, fruit size, juice acidity and fruit dry matter and stone weight ratio. There were significant differences among rootstocks in productivity, tree growth and fruit size for both cultivars. Significant differences were found between cultivars for most observed parameters. Fruit acidity and dry matter were similar for rootstocks and the studied cultivars.