Molecular analysis of apomixis in cassava.
Cassava is the main staple for more than 800 million people in the tropics. It is propagated vegetatively by stem cuttings, which maintains superior genotypes but favors disease accumulation and spread. In this report, we present the results of the screening of the progeny and the second generation of the clone UnB 307 for apomixes using microsatellites. A total of 29 plants were screened, representing the maternal plant, its first and second generations that were left to open pollination. About 20% of the offspring were rated as genetically identical plants. This result confirms the facultative apomictic nature of cassava, with high environmental effect.
Nassar
N M A
NM
Departamento de Genética e Morfologia, Universidade de Brasília, Brasília, DF, Brasil. nagnassa@rudah.com.br
Kalkmann
D C
DC
Collevatti
R
R
D000483:Alleles; D020732:Cytogenetic Analysis; D005819:Genetic Markers; D006579:Heterozygote; D002365:Manihot / Q000196:embryology / Q000235:genetics*; D018895:Microsatellite Repeats / Q000235:genetics*; D012100:Reproduction, Asexual / Q000235:genetics*
D005819:Genetic Markers