Herança da resistência a Watermelon mosaic virus em melancia1

• Published in: Revista Ceres Vol. 61; no. 4; p. 530
• Main Authors: da Silveira, Lindomar Maria, de Queiróz, Manoel Abilio, Lima, José Abérsio de Araújo, Nunes, Glauber Henrique de Sousa, do Nascimento, Aline Kelly Queiroz, Neto, Izaías da Silva Lima
• Format: Journal Article
• Language: Portuguese
• Published: Vicosa Universidade Federal de Viçosa-UFV, Revista Ceres 01-07-2014
• ISSN: 0034-737X; 2177-3491

This paper aims to study the inheritance of resistance to watermelon mosaic virus (WMV) in watermelon. Crosses were made between Crimson Sweet (CS) and the resistant line L26. Segregants and non-segregants plant populations were inoculated with an isolate of WMV. The inoculated plants were evaluated by indirect ELISA with antiserum for WMV and symptomatology in the inoculated plants, according to a previously established graded scale. The hypothesis of monogenic inheritance was tested under different presumed average degrees of dominance as well as using the maximum likelihood. The estimated variances of the populations were used to obtain the genetic, the environmental, phenotypic, additive and dominance variances as well as the broad and narrow sense heritabilities. Therefore, the genetic control of resistance to WMV in the watermelon populations analyzed showed to be oligogenic, with the presence of additive and non additive effects as well as the presence of major genes and polygenes.