Non-Correlation of Flower and Fruit Resistance to Brown Rot ( Monilinia Fructicola(Wint.) Honey) Among 27 Peach Cultivars and Selections
DOI:
https://doi.org/10.71318/apom.2005.59.3.148Abstract
The fungus Monilinia fructicola(Wint.) Honey, can infect twigs, flowers and fruits. Blossom blight in peach flowers and brown rot in fruits are among the most important disease for the peach industry in southern Brazil. Correlation of disease resistance among different organs of the tree could contribute to a more complete selection in a breeding program and benefit the industry. The objective of this study was to examine possible correlation between the resistance or tolerance in flowers and fruits of the peach cultivars 'Bolinha', 'Magno', 'Eldorado', 'Maciel', 'Linda', 'Leonense' and selection Conserva 672, and 24 F 1seedlings of the following crosses: Conserva 672 x 'Maciel' Conserva 672 x A. 334, Conserva 672 x 'Leonense', Conserva 672 x 'Eldorado' and 'Leonense' x 'Bolinha'. We did not find a correlation between percentage of infected flowers and the average percentage of fruit surface area infected by M. fructicola, or between percentages of infected flowers and fruit. We suggest that different genes control the resistance in flowers and in fruits.
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