Study on interspecific evolutionary relationships and intraspecific characterization of cassava germplasm at CENARGEN/EMBRAPA
1995
Carvalho, Luiz J.C.B. | Buso, G.S.C. | Brandoni, C. | Allem, Antonio C. | Fukuda, Wania Maria Goncalves | Sampaio, M.J.A.M.
Of the 98 species of the genus Manihot, 80 occur in Brazil. This country also has the largest single collection of M. esculenta in the world. These facts make Brazil an important source of germplasm for this crop. Recently CENARGEN revised its research priorities, choosing cassava as the vegetative propagated model for genetic resource conservation and characterization. We work using molecular markers to characterize cassava germplasm, study the evolution of M. esculenta and develop a molecular linkage map. Our current approach focuses on broadening the germplasm to make it readily available for our studies. Preliminary results on the use of molecular markers to address cassava evolution indicate that M. esculenta is more closely related to South American species such as M. esculenta subsp. flabellifolia, M. esculenta subsp. peruviana, and M. pilosa. Research is also conducted on the genetic diversity of the cultivated species for germplasm collection management and breeding for agronomic characteristics.
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