Somatic chromosome number doubling of selected potato genotypes using callus culture or the colchicine treatment of shoot nodes in vitro

cal callo callus chromosome number colchicina colchicine cultivo in vitro culture in vitro genetica genetics in vitro culture mutagens nombre chromosomique papa ploidy poliploidia polyploidie polyploidy pomme de terre potatoes solanum tuberosum somaclonal variation variation somaclonale