ISHS Acta Horticulturae 800: X International Pear Symposium
INVESTIGATIONS ON PEAR ROOTSTOCKS AT NORTH EUROPEAN CLIMATIC CONDITIONS |
| Authors: | D. Kviklys, N. Kvikliene |
| Keywords: | Pyrus × communis, Cydonia × oblonga, yield, vegetative growth, fruit weight, productivity, Lithuania |
| Abstract:
Seven rootstocks for pears were studied at the Lithuanian Institute of Horticulture (55°60’ N, 23°48’ E) in 2001–2006. The trial included Cydonia rootstocks Quince MC, Quince MA and BA 29, vegetatively propagated Pyrus rootstocks Pyrodwarf and OHxF 333, Pyrus seedling rootstocks Mostbirne and Kazrausu. Planting distances for vegetative rootstocks were 4 x 2 m and for seedlings rootstocks were 4 x 3 m. The most precocious pear trees were on Quince MC and Quince MA. The first crops appeared in the 3rd year after planting. Pears on BA 29, OHXF 333 and Pyrodwarf started to yield in the 4th year and on both seedling rootstocks – in the 5th year after planting. The highest cumulative yield (30–34 kg/tree) during the first 6 years was on Quince MA, BA 29, OHxF 333 and Pyrodwarf. Significantly lower yields were obtained on Quince MC and seedling rootstocks. According to their fertility indices, the rootstocks were ranged in the following groups: 1. BA 29 and Quince MC; 2. Quince MA; 3. Pyrodwarf; 4. OHxF 333; 5. Mostbirne and Kazrausu. Significantly lower vegetative growth of pear trees was recorded on Quince MC. Trees on Quince MA and BA29 grew stronger. The strongest growth was recorded on all Pyrus rootstocks and there were no significant differences between them, except Pyrodwarf and Mostbirne. Mean fruit weight did not depend on rootstock and varied between years. | |
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