Data/hora: 18/06/2024 20:11:50

Biblioteca(s): | Embrapa Agricultura Digital.
Data corrente: | 22/05/2009
Data da última atualização: | 07/08/2013
Autoria: | SILVA, M. R. da; PEREIRA, D. G.; SEDIYAMA, T.; CRUZ, C. D.; REIS, M. S.; GOMES, J. L. L.; TEIXEIRA, R. de C.
Afiliação: | MARILDA RAMOS DA SILVA, UESB; DERVAL GOMES PEREIRA, UESB; TUNEO SEDIYAMA, UFV; COSME DAMIÃO CRUZ, UFV; MÚCIO SILVA REIS, UFV; JOSÉ LUIZ LOPES GOMES, UFV; RITA DE CÁSSIA TEIXEIRA, UFV.
Título: | Estimates of repeatability in the evaluation of resistance of soybean genotypes to powdery mildew.
Ano de publicação: | 2006
Fonte/Imprenta: | Crop Breeding and Applied Biotechnology, Londrina, v. 6, n. 2, p. 160-166, June 2006.
Idioma: | Inglês
Conteúdo: | Soybean is worldwide a crop of great importance, however, with its expansion, diseases causing great yield loss such as the powdery mildew surge (Erisyphe diffusa U. Braun & S. Takam). Objective of the present study was to estimate the ideal number of evaluations of the resistance of soybean genotypes to powdery mildew by means of repeatability studies with the traits: ILA (infection of the leaf area), ILS (infection of the leaf blade surface) and ILU (infection of the leaf underside), using the treatments no control - NC, partial control - PC (fungicide 80% sulfur at ILA >= 40%) and total control - TC (presence of symptoms). Only trait ILA presented estimates of repeatability (ANOVA and principal components), with 85-90% of stability in 3 or 4 measurements (PC and NC methods). These results and the high values found for R2 indicate that selection based on this parameter is possible.
Palavras-Chave: | Repetibilidade; Variância fenotípica.
Thesagro: | Agricultura; Biotecnologia; Genética; Oídio; Soja.
Thesaurus Nal: | Agriculture; Biotechnology; Genetics.
Categoria do assunto: | G Melhoramento Genético
Registro original: | Embrapa Agricultura Digital (CNPTIA)
Exemplares: | CNPTIA - (12922-1) - ADD - AP - PP -  -  -  - DIS