Parallel spindles (ps) were found in a spontaneously occurring triploid plant ofS. chacoense and two triploids ofS. commersonii. This may be the basis for the formation of plump, stainable pollen in these triploids, since ps at Ana II could confer male fertility to odd-ploids by forming pollen with the 2n chromosome number. The participation of 2n gametes in the origin and evolution of polyploidsolanum via sexual polyploidization is strongly implicated. Se encontraron husos paralelos (ps) en una planta triploide, que se presento espontaneamente, enS. chacoense y en dos triploides deS. commersonii. Esta puede ser la base para la formacion de polen turgente y coloreable en esos triploides, puesto que (ps) en Anafase II pudiera conferir fertilidad masculina en niveles de ploidia impares por la formacion de polen con el numero cromosomico 2n. Esto implica claramente la participation de gametos 2n en el origen y evolution deSolanum poliploides a traves de poliploidizacion sexual.