| Autor(es): Mostrar menos - |
Pinto, L. R.
[1]
;
Leite, D. C.
[1]
;
Favero, T. M.
[1]
;
Pastina, M. M.
[2]
;
Garcia, A. A. F.
[2]
;
Perecin, D.
;
Goncalves, B. S.
[1]
;
Creste, S.
[1]
;
Xavier, M. A.
[1]
;
Bidoia, M. A. P.
[1]
;
Landell, M. G. A.
[1]
;
de Souza, A. Pereira
[3]
Número total de Autores: 12
|
| Afiliação do(s) autor(es): | [1] Ctr Avangado Pesquisa Tecnol Agronegacio Cana IAC, BR-14001970 Ribeirao Preto, SP - Brazil
[2] Univ Sao Paulo, Escola Super Agr Luiz Queiroz ESALQ, Dept Genet, BR-13400970 Piracicaba, SP - Brazil
[3] Univ Estadual Campinas UNICAMP, Ctr Biol Mol Engn Genet CBMEG, BR-13083970 Campinas, SP - Brazil
Número total de Afiliações: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | INTERNATIONAL SUGAR JOURNAL; v. 113, n. 1346, p. 140-144, FEB 2011. |
| Citações Web of Science: | 0 |
| Resumo | |
Marker assisted selection depends on the identification of tightly linked association between marker and the trait of interest. In the present work, functional (EST-SSRs) and genomic (gSSRs) microsatellite markers were used to detect putative QTLs for sugarcane yield components (stalk number, diameter and height) and as well as for quality parameters (Brix, Pol and fibre) in plant cane. The mapping population (200 individuals) was derived from a bi-parental cross (IACSP95-3018 x IACSP93-3046) from the IAC Sugarcane Breeding Program. As the map is under construction, single marker trait association analysis based on the likelihood ratio test was undertaken to detect the QTLs. Of the 215 single dose markers evaluated (1:1 and 3:1), 90 (42%) were associated with putative QTLs involving 43 microsatellite primers (18 gSSRs and 25 EST-SSRs). For the yield components, 41 marker/trait associations were found: 20 for height, 6 for diameter and 15 for stalk number. An EST-SSRs marker with homology to non-phototropic hypocotyls 4 (NPH4) protein was associated with a putative QTL with positive effect for diameter as also with a negative effect for stalk number. In relation to the quality parameters, 18 marker trait associations were found for Brix, 19 for Pol, and 12 for fibre. For fibre, 58% of the QTLs detected showed a negative effect on this trait. Some makers associated with QTLs with a negative effect for fibre showed a positive effect for Pol, reflecting the negative correlation generally observed between these traits. (AU) | |
| Processo FAPESP: | 05/55258-6 - Mapeamento genético e identificação de marcadores moleculares genômicos e funcionais associados a características agronômicas de interesse em cana-de-açúcar |
| Beneficiário: | Luciana Rossini Pinto Machado da Silva |
| Modalidade de apoio: | Auxílio à Pesquisa - Jovens Pesquisadores |
| Processo FAPESP: | 07/54631-0 - Análise de ligação entre marcadores moleculares do tipo microssatélites funcionais em uma população segregante de cana-de-açúcar |
| Beneficiário: | Bruna Sousa Gonçalves |
| Modalidade de apoio: | Bolsas no Brasil - Iniciação Científica |
| Processo FAPESP: | 07/57828-0 - Identificacao de marcadores microssatelites genomicos e funcionais associados a parametros agroindustriais em cana de acucar. |
| Beneficiário: | Daniel Carvalho Leite |
| Modalidade de apoio: | Bolsas no Brasil - Mestrado |