Abstract
Abstract New chromosome numbers of seven peanut species, A. cryptopotamica Krapov. and W.C. Gregory and A. douradiana Krapov. and W.C. Gregory (Sect.Erectoides), A. subcoriacea Krapov. and W.C. Gregory and chiquitana Krapov.,W.C. Gregory and C.A. Simpson (Sect. Procumbentes), A. cruziana Krapov., W.C.Gregory and C.A. Simpson, A. Herzogii Krapov., W.C. Gregory&C.A. Simpson and A. Simpsonii Krapov. and W.C. Gregory (Sect. Arachis) have been determined,all of them have 2n=20. SAT chromosomes were analysed for all species and a new type of satellited chromosome was described for the genus, which was named 3B for its close resemblance to the first described 3 type. “A” chromosomes were only found in A. Herzogii, A. Simpsonii and A. chiquitana from all the studied species. The last one belong to the section Procumbentes, however, the type of satellited chromosome and the presence of “A” chromosomes in its karyotype suggest that it should be moved from section Procumbentes. The presence of A chromosomes prov...
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