Data/hora: 20/06/2024 03:46:50

Biblioteca(s): | Embrapa Agrossilvipastoril; Embrapa Cerrados; Embrapa Gado de Leite; Embrapa Pecuária Sul; Embrapa Tabuleiros Costeiros.
Data corrente: | 16/08/2021
Data da última atualização: | 23/08/2021
Autoria: | FERREIRA, F. M.; ROCHA, J. R. do A. S. de C.; BHERING, L. L.; FERNANDES, F. D.; LEDO, F. J. da S.; RANGEL, J. H. de A.; KOPP, M. M.; CAMARA, T. M. M.; SILVA, V. Q. R. da; MACHADO, J. C.
Afiliação: | FILIPE MANOEL FERREIRA, Universidade Federal de Viçosa; JOÃO ROMERO DO AMARAL SANTOS DE CARVALHO ROCHA, Universidade Federal de Viçosa; LEONARDO LOPES BHERING, Universidade Federal de Viçosa; FRANCISCO DUARTE FERNANDES, CPAC; FRANCISCO JOSE DA SILVA LEDO, CNPGL; JOSE HENRIQUE DE ALBUQUERQUE RANGEL, CPATC; MAURICIO MARINI KOPP, CPPSUL; TASSIANO MAXWELL MARINHO CAMARA, CPATC; VANESSA QUITETE RIBEIRO DA SILVA, CPAMT; JUAREZ CAMPOLINA MACHADO, CNPGL.
Título: | Optimal harvest number and genotypic evaluation of total dry biomass, stability, and adaptability of elephant grass clones for bioenergy purposes.
Ano de publicação: | 2021
Fonte/Imprenta: | Biomass and Bioenergy, v. 149, 106104, 2021.
Idioma: | Inglês
Conteúdo: | For elephant grass breeding for bioenergy purposes, selection should be based on repeated harvests to maximize the selection efficiency. Selecting genotypes with high total dry biomass, associated with high adaptability and stability, is extremely important. Thus, the objective of this study was to estimate the minimum number of harvests required for total dry biomass to enable an accurate selection of elephant grass clones in multiple environmental trials. Additionally, the relative performance of genetic values (HMRPGV) and centroid methods were used to cluster and rank the best clones on the basis of their total dry biomass, adaptability, and stability. Nineteen clones and two checks were evaluated in six environments. Two or four harvests were performed in each environment. A mixed model methodology (REML/BLUP) was used to estimate the variance components and predict the genotypic values. The repeatability coefficient for total dry biomass was 0.20. The accuracies of performing two and four harvests were 59% and 72%, respectively. The increase in selection efficiency by performing two, four, and seven harvests instead of just one was 29%, 57%, and 76%, respectively. Finally, the clones were clustered into four classes according to their total dry biomass, adaptability, and stability. We conclude that at least seven harvests are required to achieve an accuracy of 80%, and that the HMRPGV and centroid methods are practical, visual, and reliable for simultaneously clustering, ranking, and selection of clones based on their adaptability, stability, and total dry biomass production.
Palavras-Chave: | Cenchrus purpureus; Mixed model; Permanent environment.
Thesagro: | Bioenergia; Biomassa; Capim Elefante; Gramínea Forrageira.
Thesaurus Nal: | Energy crops; Genotype-environment interaction; Models.
Categoria do assunto: | F Plantas e Produtos de Origem Vegetal
Registro original: | Embrapa Cerrados (CPAC)

Exemplares:

CNPGL - (25218-1) - UPC - AP - DD -  -  -  - DIS
CPATC - (25877-1) - UPC - AP - DD -  -  -  - DIS
CPAC - (37021-1) - UPC - AP - DD - DIGITAL -  - DIGITAL - DIS
CPPSUL - (14869-1) - UPC - AP - DD -  -  -  - DIS
CPAMT - (1758-1) - UPC - AP - DD -  -  -  - DIS