Data/hora: 19/06/2024 22:29:40

Biblioteca(s): | Embrapa Agricultura Digital.
Data corrente: | 15/09/2009
Data da última atualização: | 22/10/2010
Autoria: | BONI, T. A.; PRIOLI, A. J.; PRIOLI, S. M. A. P.; LUCIO, L. C.; MELLO, R. de.
Afiliação: | TALGE AIEX BONI, NUPÉLIA/UEM; ALBERTO JOSÉ PRIOLI, NUPÉLIA, DBC/UEM; SÔNIA MARIA ALVES PINTO PRIOLI, NUPÉLIA, DBC/UEM; LÉIA CAROLINA LUCIO, NUPÉLIA/UEM; RODRIGO DE MELLO, NUPÉLIA/UEM.
Título: | Inheritance of aluminum tolerance in maize.
Ano de publicação: | 2009
Fonte/Imprenta: | Crop Breeding and Applied Biotechnology, Londrina, v. 9, n. 2, p. 147-153, June 2009.
Idioma: | Inglês
Conteúdo: | The purpose of this study was to investigate aluminum tolerance in maize. For this purpose, a nutrient solution was used with the tolerant (L922) and sensitive (Ast214) homozygous parental lines, with the segregating generation F2 and with the F2:3 lines derived thereof. Seeds were germinated on paper and seedlings transferred to a nutrient solution containing 4.5 mg L-1 aluminum. In the experiments involving F2:3 derived lines groups of rows with F2:3 plants were intercropped with rows of eight seedlings of the parental lines in a completely randomized block design. Results of the F2 generation demonstrated a bimodal distribution of relative frequencies, with approximately three times more seedlings in the tolerant group. This suggests the participation of only one locus in tolerance inheritance. The narrow-sense heritability (F2, F2:3) of seminal root length of F2 plants and means of F2:3 lines was 0.49, which partially explained the bimodal frequency distribution of means of F2:3 lines, but was not accurate enough to differentiate tolerant from sensitive groups.
Palavras-Chave: | Distribuição bimodal; Herança genética; Herdabilidade; Plântulas; Tolerância ao alumínio em milho; Zea mays L.
Thesagro: | Agricultura; Biotecnologia; Genética; Solução Nutritiva.
Categoria do assunto: | G Melhoramento Genético
Registro original: | Embrapa Agricultura Digital (CNPTIA)
Exemplares: | CNPTIA - (13985-1) - ADD - AP - PP -  -  -  - DIS