Data/hora: 02/06/2024 00:17:15

Biblioteca(s): | Embrapa Unidades Centrais.
Data corrente: | 15/10/2010
Data da última atualização: | 30/04/2018
Autoria: | SILVA, S. D. V. M.; LUZ, E. D. M. N.; PIRES, J. L.; YAMADA, M. M.; SANTOS FILHO, L. P. dos.
Afiliação: | Stela Dalva Vieira Midlej Silva, Comissão Executiva do Plano da Lavoura Cacaueira; Edna Dora Martins Newman Luz, Comissão Executiva do Plano da Lavoura Cacaueira; José Luis Pires, Comissão Executiva do Plano da Lavoura Cacaueira; Milton Macoto Yamada, Comissão Executiva do Plano da Lavoura Cacaueira; Lindolfo Pereira dos Santos Filho, Comissão Executiva do Plano da Lavoura Cacaueira.
Título: | Parent selection for cocoa resistance to witches'- broom.
Ano de publicação: | 2010
Fonte/Imprenta: | Pesquisa Agropecuária Brasileira, Brasília, DF, v. 45, n. 7, p. 680-685, jul. 2010
Idioma: | Inglês
Notas: | Título em português: Seleção de progenitores de cacaueiro quanto à resistência à vassoura?de?bruxa.
Conteúdo: | The objective of this work was to identify genotypes with high general combining ability for resistance to witches'-broom (Moniliophthora perniciosa) in populations formed from a first cycle of recurrent selection. Highly productive and resistant clones from different origins were interbred using the North Carolina II design. The clones SCA 6, CSUL 7, RB 39, CEPEC 89, OC 67, BE 4, EEG 29 and ICS 98 were used as paternal parents, while the maternal ones were NA 33, CCN 10, IMC 67, P 4B, CCN 51, CEPEC 86, SGU 54 and ICS 9. Twenty days after germination, 56 seedlings of each cross (four replicates of 14 seedlings) received the inoculation of a 1-mL suspension with 7.5x104 basidiospores mL?1. Symptoms were evaluated 60 days after inoculation. Significant differences were observed among paternal and among maternal parents, for resistance to witches'-broom assessed according to the proportion of progeny seedlings with the disease symptoms. Differences were also observed between groups of mothers or fathers previously defined as resistant, and groups previously defined as susceptible. It is possible to obtain a combination of genes that can increase the level of resistance to witches'-broom directly from the first cycle of recurrent selection.
Palavras-Chave: | Disease integrate management.
Thesagro: | Theobroma Cacao.
Thesaurus Nal: | Early selection; Genetic resistance; Moniliophthora perniciosa.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/105840/1/Parent-selection.pdf
Registro original: | Embrapa Unidades Centrais (AI-SEDE)
Exemplares: | AI-SEDE - (48298-1) - UPE - AP - PP - 630.72081 - P474 -  - DIS