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Erste Hybrid‐Platanen mit Resistenz gegen den Platanenkrebs (Ceratocystis fimbriata f. sp. platani)
Author(s) -
Vigouroux A.,
Olivier R.
Publication year - 2004
Publication title -
forest pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.535
H-Index - 49
eISSN - 1439-0329
pISSN - 1437-4781
DOI - 10.1111/j.1439-0329.2004.00372.x
Subject(s) - canker , biology , ceratocystis , botany , inoculation , resistance (ecology) , hybrid , salicaceae , chancre , clone (java method) , woody plant , horticulture , gene , genetics , agronomy , fungus , syphilis , human immunodeficiency virus (hiv) , immunology
Summary Canker stain, caused by the ascomycete Ceratocystis fimbriata f. sp. platani , is a major threat to plane trees in Europe. The American plane tree ( Platanus occidentalis ) carries some genetic resistance, but this species is not adapted to the climatic conditions in Europe. Therefore, hybrids between susceptible oriental plane trees (Platanus orientalis) and resistant P. occidendalis were screened for disease resistance in France. Among 960 hybrids, we found 18 individuals which survived two successive inoculations. These putatively resistant trees were cut back and, after 18 months, on each tree 12 of the newly produced shoots as well as two roots, were inoculated again. From these trees, only one showed complete and another one partial resistance. This selection process resulting in the resistant clone ‘Vallis clausa’ is described in detail.