Title:	Selection processes in a citrus hybrid population using RAPD markers.
Authors:	OLIVEIRA, R. P. de AGUILAR-VILDOSO, C. I. MACHADO, M. A.
Affiliation:	ROBERTO PEDROSO DE OLIVEIRA, CPACT Carlos Ivan Aguilar-Vildoso, Centro Apta Citros Sylvio Moreira Marcos Antônio Machado, Centro Apta Citros Sylvio Moreira.
Date Issued:	2003
Citation:	Pesquisa Agropecuária Brasileira, Brasília, DF, v. 38, n. 11, p. 1297-1302, nov. 2003
Description:	The objective of this work was to evaluate the processes of selection in a citrus hybrid population using segregation analysis of RAPD markers. The segregation of 123 RAPD markers between 'Cravo' mandarin (Citrus reticulata Blanco) and 'Pêra' sweet orange (C. sinensis (L.) Osbeck) was analysed in a F1 progeny of 94 hybrids. Genetic composition, diversity, heterozygosity, differences in chromosomal structure and the presence of deleterious recessive genes are discussed based on the segregation ratios obtained. A high percentage of markers had a skeweness of the 1:1 expected segregation ratio in the F1 population. Many markers showed a 3:1 segregation ratio in both varieties and 1:3 in 'Pêra' sweet orange, probably due to directional selection processes. The distribution analysis of the frequencies of the segregant markers in a hybrid population is a simple method which allows a better understanding of the genetics of citrus group.
Thesagro:	Citrus Reticulata Citrus Sinensis Marcador Genético Segregação
NAL Thesaurus:	genetic markers
Keywords:	segregation
Notes:	Título em português: Processos de seleção em uma população de híbridos de citros usando marcadores RAPD.
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado / Embrapa Unidades Centrais (AI-SEDE)