Summary
Progenies of Malus robusta(Al42/5), M. zumi(A143/14, A143/24) and Klon 40 (Goldparmäne open-pollinated) as well as those between varieties were evaluated for natural mildew (Podosphaera leucotricha) incidence for up to 10 years in the field. In progenies from all resistance sources field resistant plants could be found. M. robusta and M. zumi transmitted resistance better than Klon 40 and varieties. M. zumi had higher numbers of resistant plants in progenies than M. robusta. More plants being attacked at least once moderately or severely during the observation time occured in M. robusta than in M. zumi progenies. Normally in progenies of Klon 40 and of varieties only a small part of the plants was field resistant; the number being higher in Klon 40 than in varieties. The best variety Rote Sternrenette was as good as Klon 40.
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References
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© 1994 Springer Science+Business Media Dordrecht
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Krüger, J. (1994). Observations on different mildew sources used in apple breeding at Ahrensburg. In: Schmidt, H., Kellerhals, M. (eds) Progress in Temperate Fruit Breeding. Developments in Plant Breeding, vol 1. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-0467-8_2
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DOI: https://doi.org/10.1007/978-94-011-0467-8_2
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