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ISHS Acta Horticulturae 903: IX International Symposium on Integrating Canopy, Rootstock and Environmental Physiology in Orchard Systems

DEGREE OF DWARFING AND PRODUCTIVITY OF EIGHT APPLE ROOTSTOCKS WITH WINTER HARDY SCIONS

Authors:   E. Hoover, S. McKay, A. Telias, D. Bedford
Keywords:   Malus domestica, trunk cross-sectional area, yield, yield efficiency
DOI:   10.17660/ActaHortic.2011.903.37
Abstract:
We used mixed linear regression analysis to model tree size and yield of eight apple rootstocks grown in Minnesota using data collected over several trials and years to compare rootstock performance. The model accounted for a significant portion of the variation in trunk cross-sectional area and yield but substantial variation remained unexplained. The model estimated that the largest trees were on G.30 followed by V.1, M.7, M.26, V.3, M.9, G.16 and Bud.9. Estimated yield was greatest for V.1, followed by G.30, G.16, M.9, M.26, V.3, B.9 and M.7. Based on this analysis G.16 had the highest yield efficiency in Minnesota followed by V.1, M.9, V.3, G.30, M.26, Bud.9 and M.7 which had the lowest yield efficiency.
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