The susceptibility to Armillaria mellea of different Prunus species used as stone fruit rootstocks

• Published in: Scientia horticulturae Vol. 46; no. 1; pp. 43 - 54
• Main Authors: Guillaumin, J.J., Pierson, J., Grassely, C.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 1991; Elsevier
• Subjects: Agricultural sciences; Agronomy. Soil science and plant productions; almond; ARMILLARIA; Biological and medical sciences; DISEASE RESISTANCE; fruit trees; Fundamental and applied biological sciences. Psychology; Genetics and breeding of economic plants; Horticulture; Interspecific and intergeneric hybridization, introgressions; Life Sciences; peach; Plant breeding: fundamental aspects and methodology; PODREDUMBRE DE LA RAIZ; PORTAINJERTOS; PORTE GREFFE; POURRITURE DES RACINES; PRUNUS; RESISTANCE AUX MALADIES; RESISTENCIA A LA ENFERMEDAD; ROOT ROTS; root rots of trees; root stocks; ROOTSTOCKS; almond; peach; fruit trees; root stocks; root rots of trees; Armillaria; Plant pathogen; Armillaria mellea; Rosaceae; Basidiomycetes; Environmental factor; Rootstock; Fungi; Resistance; Dicotyledones; Angiospermae; Interspecific hybridization; Prunus; Spermatophyta; Fruit tree; Thallophyta; PECHER; AMANDIER; PRUNIER; PRUNUS AMYGDALUS
• ISSN: 0304-4238; 1879-1018
• DOI: 10.1016/0304-4238(91)90091-C

Four trials were started in 1980 to investigate the level of resistance to Armillaria mellea sensu stricto within plum species ( Prunus domestica, Prunus insititia, Prunus cerasifera) and recently created rootstock clones originating from interspecific hybridization. The results either revealed for the first time or confirmed a previously observed high degree of susceptibility shown by certain rootstocks: peach, almonds, peach × almond, peach × Prunus besseyi, peach × Prunus davidiana, peach × Prunus kansuensis. The most tolerant rootstocks were found within the species P. domestica, P. insititia, P. cerasifera (cultivar ‘Myrobalan’) and among hybrids with these species. Defence reactions in the bark and sapwood of tolerant rootstocks were observed. Environmental factors and type of scion had some influence on the expression of tolerance or susceptibility.