The synthesis of a new cassava-derived species, Manihot vieiri Nassar.
A new species was synthesized artificially by chromosome doubling in a hybrid. The ensuing polyploid type exhibits an apomictic nature and maintains its morphological characteristics in the progeny. It showed a frequency of multiembryonic sacs of 29% in the ovules examined, whereas sacs were absent in the diploid type.
Nassar
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NM
Departamento de Genética e Morfologia, Universidade de Brasília, Brasília, DF, Brasil. nagnassa@rudah.com.br
D002678:Chimera / Q000235:genetics; D003433:Crosses, Genetic; D006824:Hybridization, Genetic / Q000235:genetics*; D002365:Manihot / Q000235:genetics*; D011123:Polyploidy; D012641:Selection, Genetic