Performance of Fuji and Mcintosh Apple Trees after 10 Years as Affected by Several Dwarf Rootstocks - Final Report of the 1999 NC-140 Dwarf Apple Rootstock Trial

摘要

Rootstock selection requires an understanding of the level of vigor that the rootstock can induce, the precocity and productivity that may result, the longevity of the grafted tree, resistance to biotic and abiotic stresses and, ultimately, the overall economic impact on a commercial orchard system. For new rootstocks, this understanding is not possible without extensive study. The NC-140 Technical Committee began in 1976 with the goal of evaluating rootstocks over a wide variety of environments across North America in uniform trials to assist orchardists in managing root-stock selection decisions.The Cornell-Geneva Apple Rootstock Breeding Program began a number of years ago with the work of Dr. James Cummins. After Dr. Cummins' retirement, Cornell University entered into a relationship with the United States Department of Agriculture to continue this important root-stock breeding effort. The main focus of this breeding program is disease resistance. Another productive breeding program is at the Institut fur Obstforschung Dresden-Pill-nitz in Germany.