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Registro Completo |
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Biblioteca(s): |
Embrapa Agricultura Digital; Embrapa Clima Temperado. |
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Data corrente: |
27/12/2022 |
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Data da última atualização: |
25/01/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
STEINMETZ, S.; MAGALHAES JUNIOR, A. M. de; FAGUNDES, P. R. R.; CUADRA, S. V.; ALMEIDA, I. R. de. |
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Afiliação: |
SILVIO STEINMETZ, CPACT; ARIANO MARTINS DE MAGALHAES JUNIOR, CPACT; PAULO RICARDO REIS FAGUNDES, CPACT; SANTIAGO VIANNA CUADRA, CNPTIA; IVAN RODRIGUES DE ALMEIDA, CNPTIA. |
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Título: |
Accumulated degree-days to reach the main plant developmental stages of irrigated rice cultivars. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Agrometeoros, Passo Fundo, v. 30, e027129, 2022. |
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DOI: |
DOI: http://dx.doi.org/10.31062/agrom.v30.e027129 |
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Idioma: |
Inglês |
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Conteúdo: |
The objective of this study was to determine the accumulated degree-days (DD) to reach six plant developmental stages (PDS) of irrigated rice cultivars. Field experiments were carried out at the Estação Experimental Terras Baixas (ETB) of Embrapa Clima Temperado, located in the municipality of Capão do Leão, State of Rio Grande do Sul, Brazil, during 12 crop seasons, using six sowing dates in each. Ten plants of each cultivar were tagged and had each of the PDS monitored throughout the crop cycle. The DD (°C day) were calculated as the sum of the daily values resulting from the difference between mean air temperature (Tm) and the minimal base temperature (Tb = 11 °C), from the emergence until the date of each PDS. The results indicated that the DD to reach anthesis (R4) represented, in the average, about 77% of the total cycle (R9), ranging from 73% for IRGA 421 to 91% for Epagri 109. The vegetative period (from E-emergence to R1) is the one with the highest average DD value, around 48% of the total cycle, presenting also the largest differences between cultivars when compared to the reproductive period 1 (R1-R4) and the reproductive period 2 (R4-R9). |
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Palavras-Chave: |
Desenvolvimento de planta; Graus-dias; Oryza sativa L; Tempo térmico; Thermal time. |
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Thesagro: |
Arroz Irrigado; Fenologia. |
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Thesaurus Nal: |
Phenology; Plant development; Rice. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1150411/1/Silvio-Steinmetz-27129-130002-1-PB.pdf
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Marc: |
LEADER 02078naa a2200301 a 4500
001 2150411
005 2023-01-25
008 2022 bl uuuu u00u1 u #d
024 7 $aDOI: http://dx.doi.org/10.31062/agrom.v30.e027129$2DOI
100 1 $aSTEINMETZ, S.
245 $aAccumulated degree-days to reach the main plant developmental stages of irrigated rice cultivars.$h[electronic resource]
260 $c2022
520 $aThe objective of this study was to determine the accumulated degree-days (DD) to reach six plant developmental stages (PDS) of irrigated rice cultivars. Field experiments were carried out at the Estação Experimental Terras Baixas (ETB) of Embrapa Clima Temperado, located in the municipality of Capão do Leão, State of Rio Grande do Sul, Brazil, during 12 crop seasons, using six sowing dates in each. Ten plants of each cultivar were tagged and had each of the PDS monitored throughout the crop cycle. The DD (°C day) were calculated as the sum of the daily values resulting from the difference between mean air temperature (Tm) and the minimal base temperature (Tb = 11 °C), from the emergence until the date of each PDS. The results indicated that the DD to reach anthesis (R4) represented, in the average, about 77% of the total cycle (R9), ranging from 73% for IRGA 421 to 91% for Epagri 109. The vegetative period (from E-emergence to R1) is the one with the highest average DD value, around 48% of the total cycle, presenting also the largest differences between cultivars when compared to the reproductive period 1 (R1-R4) and the reproductive period 2 (R4-R9).
650 $aPhenology
650 $aPlant development
650 $aRice
650 $aArroz Irrigado
650 $aFenologia
653 $aDesenvolvimento de planta
653 $aGraus-dias
653 $aOryza sativa L
653 $aTempo térmico
653 $aThermal time
700 1 $aMAGALHAES JUNIOR, A. M. de
700 1 $aFAGUNDES, P. R. R.
700 1 $aCUADRA, S. V.
700 1 $aALMEIDA, I. R. de
773 $tAgrometeoros, Passo Fundo$gv. 30, e027129, 2022.
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Registro original: |
Embrapa Clima Temperado (CPACT) |
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Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
08/02/2008 |
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Data da última atualização: |
16/08/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Internacional - A |
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Autoria: |
DITA, M. A.; BROMMONSCHENKEL, S. H.; MATSUOKA, K.; MIZUBUTI, E. S. G. |
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Afiliação: |
Miguel Angel Dita, CNPMF; S. H. Brommonschekel, UFV; K. Matsuoka, UFV; E. S. G. Mizubuti, UFV. |
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Título: |
Histopathological study of the Alternaria solani infection process in potato cultivars with different levels of early blight resistance. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
Journal Phytopathology, Berlin, n. 155, p. 462-469, 2007. |
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Idioma: |
Inglês |
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Conteúdo: |
Histopathological analyses of the infection process of Alternaria solani were accomplished in three potato cultivars with different levels of early blight resistance. Leaflets of Aracy (resistant), Delta (moderately resistant) and Bintje (susceptible) cultivars were inoculated at the beginning of the flowering stage. In order to study the effect of leaf age, leaf samples were collected separately, in the lower, middle and upper third of the plants. Conidia germination, appressoria formation, penetration and number of penetration sites exhibiting hypersensitive response (HR) were qualitatively and quantitatively assessed at 6, 12, 24, 48 and 72 h after inoculation. Penetration occurred most frequently through the junctions of the epidermal cells. Penetrations through stomata were rarely observed. There was no association between the events and the resistance levels, except for the number of penetration sites showing HR that was highest in Aracy, intermediate in Delta and lowest in Bintje. Similarly, the number of sites with HR was the only event associated with the leaf age. Regardless of cultivar resistance levels, the number of the penetration sites with HR was higher in leaves in the upper part of the plant. These results suggest that HR may be one of the mechanisms associated with age-related and genetic resistance to early blight in potato. |
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Palavras-Chave: |
Disease. |
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Thesaurus NAL: |
histopathology. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/654595/1/Alternaria-solani-infection-process-in-potato.pdf
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Marc: |
LEADER 01940naa a2200181 a 4500
001 1654595
005 2022-08-16
008 2007 bl uuuu u00u1 u #d
100 1 $aDITA, M. A.
245 $aHistopathological study of the Alternaria solani infection process in potato cultivars with different levels of early blight resistance.
260 $c2007
520 $aHistopathological analyses of the infection process of Alternaria solani were accomplished in three potato cultivars with different levels of early blight resistance. Leaflets of Aracy (resistant), Delta (moderately resistant) and Bintje (susceptible) cultivars were inoculated at the beginning of the flowering stage. In order to study the effect of leaf age, leaf samples were collected separately, in the lower, middle and upper third of the plants. Conidia germination, appressoria formation, penetration and number of penetration sites exhibiting hypersensitive response (HR) were qualitatively and quantitatively assessed at 6, 12, 24, 48 and 72 h after inoculation. Penetration occurred most frequently through the junctions of the epidermal cells. Penetrations through stomata were rarely observed. There was no association between the events and the resistance levels, except for the number of penetration sites showing HR that was highest in Aracy, intermediate in Delta and lowest in Bintje. Similarly, the number of sites with HR was the only event associated with the leaf age. Regardless of cultivar resistance levels, the number of the penetration sites with HR was higher in leaves in the upper part of the plant. These results suggest that HR may be one of the mechanisms associated with age-related and genetic resistance to early blight in potato.
650 $ahistopathology
653 $aDisease
700 1 $aBROMMONSCHENKEL, S. H.
700 1 $aMATSUOKA, K.
700 1 $aMIZUBUTI, E. S. G.
773 $tJournal Phytopathology, Berlin$gn. 155, p. 462-469, 2007.
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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