Data/hora: 22/06/2024 03:46:56

Biblioteca(s): | Embrapa Algodão; Embrapa Clima Temperado; Embrapa Unidades Centrais.
Data corrente: | 03/11/2014
Data da última atualização: | 15/04/2015
Autoria: | BRITO, G. G. de; SUASSUNA, N. D.; DIOLA, V.; SOFIATTI, V.; DUCATTI, C.; SILVA, E. T. da; MORELLO, C. de L.
Afiliação: | GIOVANI GREIGH DE BRITO, CPACT; NELSON DIAS SUASSUNA, CNPA; VALDIR DIOLA; VALDINEI SOFIATTI, CNPA; CARLOS DUCATTI; EVANDRO TADEU DA SILVA; CAMILO DE LELIS MORELLO, CNPA.
Título: | Carbon isotope fractionation for cotton genotype selection.
Ano de publicação: | 2014
Fonte/Imprenta: | Pesquisa Agropecuária Brasileira, Brasília, DF, v. 49, n. 9, p. 673-682, set. 2014.
Idioma: | Inglês
Conteúdo: | The objective of this work was to evaluate the carbon isotope fractionation as a phenomic facility for cotton selection in contrasting environments and to assess its relationship with yield components. The experiments were carried out in a randomized block design, with four replicates, in the municipalities of Santa Helena de Goiás (SHGO) and Montividiu (MONT), in the state of Goiás, Brazil. The analysis of carbon isotope discrimination (&#916;) was performed in 15 breeding lines and three cultivars. Subsequently, the root growth kinetic and root system architecture from the selected genotypes were determined. In both locations, &#916; analyses were suitable to discriminate cotton genotypes. There was a positive correlation between &#916; and seed&#8209;cotton yield in SHGO, where water deficit was more severe. In this site, the negative correlations found between &#916; and fiber percentage indicate an integrative effect of gas exchange on &#916; and its association with yield components. As for root robustness and growth kinetic, the GO 05 809 genotype performance contributes to sustain the highest values of &#916; found in MONT, where edaphoclimatic conditions were more suitable for cotton. The use of &#916; analysis as a phenomic facility can help to select cotton genotypes, in order to obtain plants with higher efficiency for gas exchange and water use.
Palavras-Chave: | Carbon isotope discrimination; Discriminação isotopica do carbono; Fenotipagem; Genetic breeding; Melhoramento genético; Phenotyping.
Thesagro: | Genótipo; Gossypium Hirsutum; Melhoramento Genético Vegetal.
Thesaurus Nal: | Gossypium; Seed cotton.
Categoria do assunto: | --

URL:

http://ainfo.cnptia.embrapa.br/digital/bitstream/item/113681/1/18571-89899-1-PB.pdf
http://ainfo.cnptia.embrapa.br/digital/bitstream/item/110882/1/Carbon-isotope.pdf

Registro original: | Embrapa Clima Temperado (CPACT)

Exemplares:

AI-SEDE - (56907-1) - UPE - AP - PP - 630.72081 - P474 -  - DIS
CNPA - (27923-1) - UPC - AP - PP - 630.5 -  -  - DIS
CPACT - (18305-1) - UPC - AP - DD - 00402 -  - 2014.00402 - DIS