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| Author: | M. Fischer |
| Keywords: | Apple rootstock breeding, Pillnitzer Supporter 4, field testing |
Abstract:
In the European fruit growing the rootstock PILLNITZER 'SUPPORTER 4' ('Pi 80') is being propagated more and more, in recent years.
It will prove useful for intensive and semi-intensive growing systems, but not for super intensive plantations.
The rootstock may replace M.26 in regions where M.9 is impossible to use.
Details of PILLNITZER 'SUPPORTER 4' are shown below:
| Breeder: |
O. Schindler (1921), Dresden - Pillnitz
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| Field testing: |
H. Müller (1956), Dresden - Pillnitz, H.J. Koch and G. Pätzold (1979), Marquardt / Wurzen, M. Fischer (1989), Dresden - Pillnitz
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| Licenser: |
Sächsische Landesanstalt f.
Landwirtschaft, Dresden Pillnitz
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| Licensee: |
Demol, F - 84430 Mondragon, France; Davodeau - Ligonniere, F - 49100 Angers, France; Tree Connection, Dundee, OR 97115 U.S.A. (in preparation).
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| Origin: |
M.9 x M.4
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| Propagation ability: |
in the stoolbed better than M.9 and M.26; in vitro no problems
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| Compatibility: |
excellent, better than M.26
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| Vigor: |
more or less similar to M.26, dependent on the cultivar
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| Yield productivity: |
better than M.26 and MM.106, lower than M.9
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| Anchorage: |
better than M.9, like M.26
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| Resistance: |
good winter frost resistance, no problems with woolly aphids, crown gall or scab, weakly susceptible to mildew, susceptible to fire blight
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| Fruit quality: |
coloration better than on M.26 or MM.106, like on M.9; storability better than M.9 and M.26, like M.7.
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