Comparative study of apple rootstocks 'Mg-T337' and 'Supporter 4 Pi 8o' with seven cultivars

摘要

Vegetative and reproductive characteristics of apple rootstocks 'M9-T337' and Supporter 4 Pi 80' budded with the cultivars 'Breaburn Fenbra', 'Gala Venus-Fengal', 'Golden Delicious clone B', 'Pinova', 'Red Delicious Hapke', 'Red Delicious Redkan' and 'Rubinfuji Romf. 811' were compared in the intensive orchard planted at the density of 2380 trees ha1 (3.5x1.2 m) in the period 2008-2011. Trees were formed as tall spindle. It was found that, with the exception of the cultivar 'Pinova', rootstock 'Supporter 4 Pi 80' induced a greater trunk-cross section area, higher trees and greater crown volume to the tested cultivars in comparison with 'M9-T337' rootstock. A higher yield per unit area was obtained on 'Supporter 4 Pi 80' rootstock compared to 'M9-T337'budded with low vigorous cultivar 'Red Delicious Redkan', whereas 'M9-T337' was superior on this parameter in combination with cultivars 'Breaburn Fenbra', 'Gala Venus-Fengal', 'Red Delicious Hapke' and 'Rubinfuji Romf. 811'.