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| Registros recuperados : 9 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
05/11/2007 |
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Data da última atualização: |
31/07/2018 |
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Autoria: |
USBERTI, R.; ROBERTS, E. H.; ELLIS, R. H. |
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Afiliação: |
Roberto Usberti, Coordenadoria de Defesa Agropecuária; Eric Hywel Roberts, The University of Reading/Department of Agriculture; Richard Harold Ellis, The University of Reading/Department of Agriculture. |
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Título: |
Prediction of cottonseed longevity |
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Ano de publicação: |
2006 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 41, n. 9, p. 1435-1441, set. 2006 |
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Idioma: |
Inglês |
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Notas: |
Título em português: Previsão da longevidade de sementes de algodoeiro. |
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Conteúdo: |
The objective of this work was to determine the viability equation constants for cottonseed and to detect the occurrence and depletion of hardseededness. Three seedlots of Brazilian cultivars IAC-19 and IAC-20 were tested, using 12 moisture content levels, ranging from 2.2 to 21.7% and three storage temperatures, 40, 50 and 65ºC. Seed moisture content level was reached from the initial value (around 8.8%) either by rehydration, in a closed container, or by drying in desiccators containing silica gel, both at 20ºC. Twelve seed subsamples for each moisture content/temperature treatment were sealed in laminated aluminium-foil packets and stored in incubators at those temperatures, until complete survival curves were obtained. Seed equilibrium relative humidity was recorded. Hardseededness was detected at moisture content levels below 6% and its releasing was achieved either naturally, during storage period, or artificially through seed coat removal. The viability equation quantified the response of seed longevity to storage environment well with KE = 9.240, CW = 5.190, CH = 0.03965 and CQ = 0.000426. The lower limit estimated for application of this equation at 65oC was 3.6% moisture content |
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Palavras-Chave: |
equação de viabilidade; hardseededness; sementes duras; viability equation. |
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Thesagro: |
Armazenamento; Gossypium Hirsutum. |
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Thesaurus NAL: |
seed storage. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/107038/1/Prediction.pdf
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Marc: |
LEADER 01934naa a2200241 a 4500
001 1121631
005 2018-07-31
008 2006 bl uuuu u00u1 u #d
100 1 $aUSBERTI, R.
245 $aPrediction of cottonseed longevity
260 $c2006
500 $aTítulo em português: Previsão da longevidade de sementes de algodoeiro.
520 $aThe objective of this work was to determine the viability equation constants for cottonseed and to detect the occurrence and depletion of hardseededness. Three seedlots of Brazilian cultivars IAC-19 and IAC-20 were tested, using 12 moisture content levels, ranging from 2.2 to 21.7% and three storage temperatures, 40, 50 and 65ºC. Seed moisture content level was reached from the initial value (around 8.8%) either by rehydration, in a closed container, or by drying in desiccators containing silica gel, both at 20ºC. Twelve seed subsamples for each moisture content/temperature treatment were sealed in laminated aluminium-foil packets and stored in incubators at those temperatures, until complete survival curves were obtained. Seed equilibrium relative humidity was recorded. Hardseededness was detected at moisture content levels below 6% and its releasing was achieved either naturally, during storage period, or artificially through seed coat removal. The viability equation quantified the response of seed longevity to storage environment well with KE = 9.240, CW = 5.190, CH = 0.03965 and CQ = 0.000426. The lower limit estimated for application of this equation at 65oC was 3.6% moisture content
650 $aseed storage
650 $aArmazenamento
650 $aGossypium Hirsutum
653 $aequação de viabilidade
653 $ahardseededness
653 $asementes duras
653 $aviability equation
700 1 $aROBERTS, E. H.
700 1 $aELLIS, R. H.
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 41, n. 9, p. 1435-1441, set. 2006
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Embrapa Unidades Centrais (AI-SEDE) |
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