Data/hora: 21/06/2024 02:01:07

Biblioteca(s): | Embrapa Mandioca e Fruticultura.
Data corrente: | 09/04/1999
Data da última atualização: | 09/04/1999
Autoria: | MIAN, M. A. R.; BAILEY, M. A.; ASHLEY, D. A.; WELLS, R.; CARTER JUNIOR, T. E.; PARROTT, W. A.; BOERMA, H. R.
Afiliação: | Dep. of Crop and Soil Sciences. of Georgia, Athens, GA 30602-7272.
Título: | Molecular markers associated with water use efficiency and leaf ash insoybean
Ano de publicação: | 1996
Fonte/Imprenta: | Published in crop Sci. v.36, p.1252-1257, 1996
Idioma: | Inglês
Conteúdo: | Water use efficiency (WUE) is an important trait thhat has been associated with drought tolerance of crop plants, and leaf ash (LASH) is generally related to WUE. A restriction fragment length poly morphism (RFLP) map was constructed from a soybean [Glycine max )L.) Merr.] population of 120 F4-derived lines from a cross of `Young' x PI 416937. The purpose of this research was to identify quantitative trait loci (QTL) associated with WUE and LASH in 36-d-old, greenhhouse-grown plants. The experimental design was a randomized complete block with six replications. Significant (P < 0.01) phenotypic differences were detected among the lines for both traits. A total of four and six independent RFLP markers were associated with WUE and LASH and if combined each group of markers would explain 38 and 53% of the variability in the respective traits. One marker locus (cr497-1), on USDA Linkage Group J, explained 13.2% of the variation in WUE indicating the presence of a major QTL. The LASH was negatively correlated with WUE (r = - 0.40**), and two QTL were associated with both WUE and LASH. For each of these QTL, the allele for increased WUE was associated with reduced LASH.
Palavras-Chave: | Beaf ash; Cinza foliar; Mareaclores; Molecular markes; Moleculares; Soybean; Tolerancia a area; Wue.
Thesaurus Nal: | drought tolerance; Raja.
Categoria do assunto: | --
Registro original: | Embrapa Mandioca e Fruticultura (CNPMF)
Exemplares: | CNPMF - (17117-1) - ADD - SP - -- - S11341 -  - S11341 - DIS