SYNTHESIS OF A NEW SPECIES AND CYTOGENETIC STUDIES IN OLEIFEROUS BRASSICA V.THE CYTOGENETIC STUDIES IN AUTO—ALLOOCTOPLOIDY OF BRASSICA NAPUS,L.VAR.OLEIFERA,D.C.
Abstract:Ⅰ.Cytological studies have shown that the karyotype of theartificial auto—allooctoploid synthesized from napus variety victory has76 chromosomes in the root tip cells and 38 bivalents during meiosis.The karyotic formula observed is as follows:(0-2)Ⅰ+(28-38)Ⅱ+(0-5)ⅣⅡ.The phenomenon of complemen