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Evaluation of fruit tree genetic resources as sources of polygenic scab resistance in an apple breeding programme


  • Lateur, M. , Wagemans, C. & Populer, C. (1999). Evaluation of fruit tree genetic resources as sources of polygenic scab resistance in an apple breeding programme. Acta Horticulturae, (No. 484),
Type Journal Article
Year 1999
Title Evaluation of fruit tree genetic resources as sources of polygenic scab resistance in an apple breeding programme
Journal Acta Horticulturae
Recnumber 72
Issue No. 484
Endnote Keywords apples|plant pathogens|plant pathogenic fungi|plant diseases|disease resistance|varietal reactions|breeding|evaluation|genetics|genes|fruit crops|plant pathology|Nectria galligen|Hypocreaceae|
Abstract Data are presented on a new research project aimed at assessing new cultivars with presumed polygenic scab resistance as parent material in breeding work. Old cultivars combining moderate susceptibility to scab (Venturia inaequalis) and, where possible, to powdery mildew (Podosphaera leucotricha) and canker (Nectria galligena), with desirable pomological characters were selected for use as parents and crossed with each other, or with modern commercial cultivars or with cultivars carrying the Vf gene. In the latter case, the aim was to improve the durability of the Vf scab resistance. In crosses involving only parents with moderate resistance to scab in the field, presumed to be under polygenic control, the percentage of seedlings emerging from the greenhouse scab inoculation tests varied from 10 to 48% according to the parent combinations. The greenhouse scab inoculation test, adapted to the evaluation of seedlings with quantitative resistance, has produced results in accordance with subsequent field behaviour.
Notes Cited Reference Count: 27 ref. Conference paper, Journal article English
Author address Station de Phytopathologie de l'Etat, Centre de Recherches Agronomiques, Chemin de Liroux, B-5030 Gembloux, Belgium.
Fichier
Lien ://19991606222
Authors Lateur, M. , Wagemans, C. & Populer, C.