Three faba bean (Vicia faba L.) breeding lines appear naturally resistant to Pythium damping-off, 2016

摘要

In order to ascertain the reaction of faba bean (Viciafaba L.) to Pythium, we carried out an experiment in a field that is naturally infested with Pythium at the Washington State University Spillman Agronomy Research Farm during the 2016 crop season.Evaluated were three advanced F8 breeding lines, derived from a single cross between a non-winter hardy vegetable type variety 'Extra Precoce Violette' and one of the most winter hardy genotypes 'Hiverna/2-5EP1' from Germany. The cross was made in 2010 in Pullman, WA. One breeding line has a purple seed coat and the other two have beige seed coats. The experimental plots were planted on May 12, 2016 in a randomized complete block design with four replications and a plot size of 6 ft x 5.5 ft with eightrows of plants. Each plot was planted with 50 untreated seeds. A stand count was taken on June 28, 2016, 46 days after planting. Germination percentage of each plot was calculated using the formula: (number of seedlings/number of seeds planted) x 100. Asingle-factor ANOVA was used to examine the significance of germination percentage variation among lines.