Data/hora: 21/06/2024 05:27:14

Biblioteca(s): | Embrapa Agricultura Digital.
Data corrente: | 01/06/2009
Data da última atualização: | 30/11/2010
Autoria: | KROPP, M. M.; COIMBRA, J. L. M.; LUZ, V. K. da; SOUSA, R. O. de; CARVALHO, F. I. F. de; OLIVEIRA, A. C. de.
Afiliação: | MAURICIO MARINI KOPP, UFPEL; JEFFERSON LUÍS MEIRELLES COIMBRA, UDESC; VIVIANE KOPP DA LUZ, UFPEL; ROGÉRIO OLIVEIRA DE SOUSA, UFPEL; FERNANDO IRAJÁ FÉLIX DE CARVALHO, UFPEL; ANTONIO COSTA DE OLIVEIRA, UFPEL.
Título: | Organic acid tolerance in M3 families of oat mutants.
Ano de publicação: | 2007
Fonte/Imprenta: | Crop Breeding and Applied Biotechnology, Londrina, v. 7, n. 1, p. 59-66, June 2007.
Idioma: | Inglês
Conteúdo: | The objective of this study was to evaluate the response of 30 mutant oat lines to the phytotoxic action of organic acids produced in the soil. In a hydroponic system with three treatments (0,7 and 10 mM) the variables root (CR) and shoot (CPA) length; number of roots (NR) and root dry matter (MSR) were measured. Only CPA at a dose of 7 mM was not significant in the ANOVA. The clustering analysis by Tocher´s method indicated the 7 mM dose as the most appropriate for stress evaluations. A relative yield analysis showed that the variable CR was most affected by the phytotoxic action followed by MSR. For all genotypes, the best adjustment to the regression was linear, presenting high R2 values. Eight genotypes (23.33 %) were classified as tolerant, indicating that mutation induction can generate genetic variability for this character.
Palavras-Chave: | Análise de regressão; Fitotoxidez; Raios-gama.
Thesagro: | Agricultura; Avena Sativa; Biotecnologia; Genética; Mutação.
Categoria do assunto: | G Melhoramento Genético
Registro original: | Embrapa Agricultura Digital (CNPTIA)
Exemplares: | CNPTIA - (13058-1) - ADD - AP - PP -  -  -  - DIS