Somatic hybrids of Solanum tuberosum and Solanum brevidens as a source of resistance of tubers to soft rot; analysis of factors conditioning resistance of tubers to bacterial degradation by Erwinia species

bacteriose bacterioses bacteriosis descendance disease resistance disease transmission erwinia chrysanthemi hexaploidia hexaploidie hexaploidy hybride somatique in vivo experimentation interspecific hybridization plagas de productos almacenados progenie progeny resistencia a la enfermedad solanum solanum tuberosum somatic hybrids stored products pests transmission des maladies tubercule tubers