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Chloroplast DNA (cp) and nuclear ribosomal DNA (rDNA) variation was investigated in 45 accessions of cultivated and wild Manihot species. Ten independent mutations, 8 point mutations and 2 length mutations were identified, using eight restriction enzymes and 12 heterologous cpDNA probes from mung...


Fregene, Martin A.Vargas, J.Ikea, J.Angel, F.Thome, J.Asiedu, RobertAkoroda, M.O.Roca, W.[Variability of chloroplast DNA and nuclear ribosomal DNA in cassava (Manihot esculenta Crantz) and its wild relatives]Variability of chloroplast DNA and nuclear ribosomal DNA in cassava (Manihot esculenta Crantz) and its wild relatives

Wild relatives of cassava (Manihot spp.) and yam (Dioscorea spp.) have many attributes of importance to the genetic improvement of the cultivated species. Some crosses between cassava and its wild relatives have led to poly ploids (crosses to M. />laziovii and M. epruinosa) and resistance to two ...


Asiedu, RobertBai, K.V.Terauchi, R.Dixon, Alfred G.O.Hahn, S.K.[Status of wide crosses in cassava and yam]Status of wide crosses in cassava and yam

In the Triticeae, hybridization of alien species with those of Triticum goes back to 1876 when Wilson consciously made the first wide hybrid involving wheat and rye. Rimpau in 1891 obtained seed on a presumably doubled sector in a wheat × rye hybrid and described 12 plants that must represent the...


Mujeeb-Kazi, A.Asiedu, Robert[Wide hybridization potential of alien genetic transfers for triticum aestivum improvement]Wide hybridization potential of alien genetic transfers for triticum aestivum improvement

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