ISHS Acta Horticulturae 732: VIII International Symposium on Canopy, Rootstocks and Environmental Physiology in Orchard Systems
EFFECT OF BUDDING HEIGHT AND ROOTSTOCKS ON THE QUALITY OF APPLE PLANTING MATERIAL |
| Authors: | D. Kviklys, J. Lanauskas |
| Keywords: | Malus × domestica Borkh., vegetative growth, nursery, bud survival, variation |
| Abstract:
The influence of budding height (10, 20 and 30 cm) on bud survival and performance of maiden trees was investigated in experiments conducted at the Lithuanian Institute of Horticulture from 1999 to 2001. Rootstocks MM.106, B118, M.26, P60, B396, M.9 and P59 were tested with cv. ‘Auksis’. Neither rootstock nor budding height affected bud take. Buds on B.118 and MM.106 survived the winter better than M.26, M.9 and B.396. The highest bud loss was recorded on M.9 and P59 rootstocks. When budding height was increased, fewer buds survived. Significant differences were found between M.9, P59, M.26 and P60. The lowest winter survival was found on M.9 and P59 rootstocks budded at the height of 30 cm. There were significant differences in tree height during all growth periods. At the beginning of vegetative growth, trees budded at 10 cm grew the slowest. By the end of the growing season, trees budded at 30 cm were significantly taller. These trees also had greater stem diameter. Trees budded on semi-vigorous rootstocks MM.106 and B.118 grew faster during the beginning of the growing season. At the end of the growing season, trees on P59 were smaller and thinner than those on other rootstocks. Variation coefficient of tree height and stem diameter was low for all rootstocks and budding heights. A somewhat larger variation was recorded in the case of M.26 rootstock budded at 30 cm. | |
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