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| 1. |  | ABREU, L. S. de; BELLON, S.; BRANDENBURG, A.; OLLIVIER, G.; LAMINE, C.; DAROLT, M. R.; AVENTURIER, P. Controvérsias e relações entre agricultura orgânica e agroecologia. In: BRANDENBURG, A.; BILLAUD, J.; LAMINE, C. (Org.). Redes de agroecologias: experiências no Brasil e na França. Curitiba: Kairós Edições, 2015. p. 171-198.| Biblioteca(s): Embrapa Meio Ambiente. |
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Registro Completo
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Biblioteca(s): |
Embrapa Algodão; Embrapa Clima Temperado. |
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Data corrente: |
21/07/2014 |
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Data da última atualização: |
16/04/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
BRITO, G. G. de; SUASSUNA, N. D.; SILVA, V. N.; SOFIATTI, V.; DIOLA, V.; MORELLO, C. de L. |
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Afiliação: |
GIOVANI GREIGH DE BRITO, CPACT; NELSON DIAS SUASSUNA, CNPA; Vivianny Nayse Silva; VALDINEI SOFIATTI, CNPA; Valdir Diola; CAMILO DE LELIS MORELLO, CNPA. |
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Título: |
Leaf-level carbon isotope discrimination and its relationship with yield components as a tool for cotton phenotyping in unfavorable conditions. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Acta Scientiarum, v. 36, n. 3, p. 335-345, jul./set. 2014. |
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ISSN: |
1807-8621 |
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DOI: |
10.4025/actasciagron.v36i3.17986 |
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Idioma: |
Inglês |
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Conteúdo: |
The initial goal of this study was to measure the efficiency of carbon isotope discrimination (?) in distinguishing between cotton plant genotypes subjected to two water regimes. In addition, ? measurements, leaf water potential and gas exchange ratios were monitored. Using Brazilian breeding lines, this study also tested the usability of ? as a proxy for selecting high-performing yield components in cotton plants grown in unfavorable conditions, particularly water deficiency. For these experiments, ? and yield components were measured and their correlations analyzed. Differences among cotton genotypes for ? (p < 0.0001) were verified, and it was found that this variable was significantly correlated with gas exchange. There was a significant positive correlation between ? and seed cotton yield only in the site experiencing severe water deficiency (Santa Helena de Goiás). However, ? had a significant negative correlation with fiber percentage. Our results indicate that ? is a suitable tool for cotton phenotyping, and it may be applied in cotton breeding programs that aim to produce high-performing yield components in unfavorable conditions. |
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Palavras-Chave: |
Estresse abiótico; Fracionamento do carbono; Troca gasosa. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/122450/1/17986-103271-1-PB.pdf
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Marc: |
LEADER 01945naa a2200241 a 4500
001 2013273
005 2015-04-16
008 2014 bl uuuu u00u1 u #d
022 $a1807-8621
024 7 $a10.4025/actasciagron.v36i3.17986$2DOI
100 1 $aBRITO, G. G. de
245 $aLeaf-level carbon isotope discrimination and its relationship with yield components as a tool for cotton phenotyping in unfavorable conditions.$h[electronic resource]
260 $c2014
520 $aThe initial goal of this study was to measure the efficiency of carbon isotope discrimination (?) in distinguishing between cotton plant genotypes subjected to two water regimes. In addition, ? measurements, leaf water potential and gas exchange ratios were monitored. Using Brazilian breeding lines, this study also tested the usability of ? as a proxy for selecting high-performing yield components in cotton plants grown in unfavorable conditions, particularly water deficiency. For these experiments, ? and yield components were measured and their correlations analyzed. Differences among cotton genotypes for ? (p < 0.0001) were verified, and it was found that this variable was significantly correlated with gas exchange. There was a significant positive correlation between ? and seed cotton yield only in the site experiencing severe water deficiency (Santa Helena de Goiás). However, ? had a significant negative correlation with fiber percentage. Our results indicate that ? is a suitable tool for cotton phenotyping, and it may be applied in cotton breeding programs that aim to produce high-performing yield components in unfavorable conditions.
653 $aEstresse abiótico
653 $aFracionamento do carbono
653 $aTroca gasosa
700 1 $aSUASSUNA, N. D.
700 1 $aSILVA, V. N.
700 1 $aSOFIATTI, V.
700 1 $aDIOLA, V.
700 1 $aMORELLO, C. de L.
773 $tActa Scientiarum$gv. 36, n. 3, p. 335-345, jul./set. 2014.
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Registro original: |
Embrapa Clima Temperado (CPACT) |
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