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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
30/04/2015 |
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Data da última atualização: |
04/05/2015 |
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Autoria: |
YORINORI, J. T. |
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Afiliação: |
JOSÉ TADASHI YORINORI, CNPSO. |
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Título: |
Cercospora sojina: pathogenity, new races and seed transmission in soybeans. |
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Ano de publicação: |
1981 |
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Fonte/Imprenta: |
Dissertation Abstracts International, v. 42, n. 2, 1981. |
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Idioma: |
Português |
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Conteúdo: |
The variability in Cercospora sojína (frogeye leal spot of soybeans), seed transmission and its relationship with other seedbome organisms were investigated. Sixty-six cultivars (maturity groups 00 to IX) were inoculated in the field with race 2 and nine new isolates oi C. sojina at 5 to 7 days intervals. The first inoculation was done when cultivars of maturity group 00 started to flower and deloliation was scored on day 33lrom first inoculation. Two disease rating scales were detined.(1) Based on relative number and types oi lesions: O = no lesion; 1 = reddish brown spots, 0.5 mm diameter or up to five 3 to 5 mm diameter spots/trifoliolate leal; 2 = reddish brown spots, 1 to 2 mm diameter or five to 10 spots/trifoliolate, 3 to 5 mm diameter; 3 = spots with reddish brown margin, light-brown to grayish center, 2 to 3 mm diameter or 10 to 50 spots/triloliolate, 3 to 5 mm diameter; 4 = spots with thin reddish brown margin, dark-grayish to light-brown center, 3 to 5 mm diameter and 50 to 120 spots/trifoliolate; and 5 = sarne as 4 with spots of more than 4 mm diameter and more than 120 spots/trifoliolate. (2) Baseei on percentage defoliation: O to 5% = resistant, 6 to 9% = intermediate, and more than 10% = susceptible. The nine new isolates of C. sojína were identified as seven new races and designated races 5 to 11. A set of differential cultivars with Bienville, Blackhawk, Bragg, Capital, Comet, Davis, Dorman, Flambeau, Hampton, Hood, Lee, Mandarin (Ottawa), Patoka, Roanoke, Tanner and Wabash is suggested. Percentage see infection by C. sojina (Cs) and other organisms on 29 cultivars {maturity groups 00 to IV) were determined in either of two ways. For the pod harvest (a) 16 cultivars (groups 00 to li) had ali the pods from five plants collected separately and the seeds aseptically assayed on blotters (4 layers of filter papers in 9-cm culture plates) with 15 to 17 seeds/plate; and for threshed seeds {b) 13 cultivars (groups Ili and IV) had tive plants threshed together and tive samples of 60 seeds/cultivar were assayed on blotters at 15 seeds/plate. The two harvest methods were also compareci with seeds threshed and surface-disinfected with 0.5% NaCIO. Percentage defoliation varied from less than 1 to 80% and was positively correlated with Cs and negatively with C. kíkuchíi infection (Ck), purple-stained seeds at plating {PS) and with 100-seed weight {HSW). The mean Cs varied trem O to 91.6% and was negatively correlated with Ck and HSW. Cs was most responsible for reduction in HSW. The effect of C. sojina on germination {GER) and HSW depended on infection occurring before full seed development. Mean PS varied Irem 1.7 to 15.6% and mean Ck varied from 7.7 to 47.1%. Mean Phomopsis spp. infection {Ph) varied Irem 5.2 to 80% and was the most responsible for low GER. Mean SMV seed mottling varied from O to 41.8%. SMV was higher on late-maturity cultivars, whereas, Ck, Cs and Ph were lower. Recovery of Ck, Cs and Ph from threshed and surface-disinfected seeds were significantly lower than from seeds removed from pods. The rate of seed transmission can be underestimated when seeds are surface-disinfected. MenosThe variability in Cercospora sojína (frogeye leal spot of soybeans), seed transmission and its relationship with other seedbome organisms were investigated. Sixty-six cultivars (maturity groups 00 to IX) were inoculated in the field with race 2 and nine new isolates oi C. sojina at 5 to 7 days intervals. The first inoculation was done when cultivars of maturity group 00 started to flower and deloliation was scored on day 33lrom first inoculation. Two disease rating scales were detined.(1) Based on relative number and types oi lesions: O = no lesion; 1 = reddish brown spots, 0.5 mm diameter or up to five 3 to 5 mm diameter spots/trifoliolate leal; 2 = reddish brown spots, 1 to 2 mm diameter or five to 10 spots/trifoliolate, 3 to 5 mm diameter; 3 = spots with reddish brown margin, light-brown to grayish center, 2 to 3 mm diameter or 10 to 50 spots/triloliolate, 3 to 5 mm diameter; 4 = spots with thin reddish brown margin, dark-grayish to light-brown center, 3 to 5 mm diameter and 50 to 120 spots/trifoliolate; and 5 = sarne as 4 with spots of more than 4 mm diameter and more than 120 spots/trifoliolate. (2) Baseei on percentage defoliation: O to 5% = resistant, 6 to 9% = intermediate, and more than 10% = susceptible. The nine new isolates of C. sojína were identified as seven new races and designated races 5 to 11. A set of differential cultivars with Bienville, Blackhawk, Bragg, Capital, Comet, Davis, Dorman, Flambeau, Hampton, Hood, Lee, Mandarin (Ottawa), Patoka, Roanoke, T... Mostrar Tudo |
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Palavras-Chave: |
Soybean. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/123216/1/id-358420001.pdf
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Marc: |
LEADER 03542nam a2200121 a 4500
001 2014766
005 2015-05-04
008 1981 bl uuuu u00u1 u #d
100 1 $aYORINORI, J. T.
245 $aCercospora sojina$bpathogenity, new races and seed transmission in soybeans.$h[electronic resource]
260 $aDissertation Abstracts International, v. 42, n. 2$c1981
520 $aThe variability in Cercospora sojína (frogeye leal spot of soybeans), seed transmission and its relationship with other seedbome organisms were investigated. Sixty-six cultivars (maturity groups 00 to IX) were inoculated in the field with race 2 and nine new isolates oi C. sojina at 5 to 7 days intervals. The first inoculation was done when cultivars of maturity group 00 started to flower and deloliation was scored on day 33lrom first inoculation. Two disease rating scales were detined.(1) Based on relative number and types oi lesions: O = no lesion; 1 = reddish brown spots, 0.5 mm diameter or up to five 3 to 5 mm diameter spots/trifoliolate leal; 2 = reddish brown spots, 1 to 2 mm diameter or five to 10 spots/trifoliolate, 3 to 5 mm diameter; 3 = spots with reddish brown margin, light-brown to grayish center, 2 to 3 mm diameter or 10 to 50 spots/triloliolate, 3 to 5 mm diameter; 4 = spots with thin reddish brown margin, dark-grayish to light-brown center, 3 to 5 mm diameter and 50 to 120 spots/trifoliolate; and 5 = sarne as 4 with spots of more than 4 mm diameter and more than 120 spots/trifoliolate. (2) Baseei on percentage defoliation: O to 5% = resistant, 6 to 9% = intermediate, and more than 10% = susceptible. The nine new isolates of C. sojína were identified as seven new races and designated races 5 to 11. A set of differential cultivars with Bienville, Blackhawk, Bragg, Capital, Comet, Davis, Dorman, Flambeau, Hampton, Hood, Lee, Mandarin (Ottawa), Patoka, Roanoke, Tanner and Wabash is suggested. Percentage see infection by C. sojina (Cs) and other organisms on 29 cultivars {maturity groups 00 to IV) were determined in either of two ways. For the pod harvest (a) 16 cultivars (groups 00 to li) had ali the pods from five plants collected separately and the seeds aseptically assayed on blotters (4 layers of filter papers in 9-cm culture plates) with 15 to 17 seeds/plate; and for threshed seeds {b) 13 cultivars (groups Ili and IV) had tive plants threshed together and tive samples of 60 seeds/cultivar were assayed on blotters at 15 seeds/plate. The two harvest methods were also compareci with seeds threshed and surface-disinfected with 0.5% NaCIO. Percentage defoliation varied from less than 1 to 80% and was positively correlated with Cs and negatively with C. kíkuchíi infection (Ck), purple-stained seeds at plating {PS) and with 100-seed weight {HSW). The mean Cs varied trem O to 91.6% and was negatively correlated with Ck and HSW. Cs was most responsible for reduction in HSW. The effect of C. sojina on germination {GER) and HSW depended on infection occurring before full seed development. Mean PS varied Irem 1.7 to 15.6% and mean Ck varied from 7.7 to 47.1%. Mean Phomopsis spp. infection {Ph) varied Irem 5.2 to 80% and was the most responsible for low GER. Mean SMV seed mottling varied from O to 41.8%. SMV was higher on late-maturity cultivars, whereas, Ck, Cs and Ph were lower. Recovery of Ck, Cs and Ph from threshed and surface-disinfected seeds were significantly lower than from seeds removed from pods. The rate of seed transmission can be underestimated when seeds are surface-disinfected.
653 $aSoybean
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Embrapa Soja (CNPSO) |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
20/06/2017 |
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Data da última atualização: |
04/07/2019 |
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Tipo da produção científica: |
Documentos |
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Autoria: |
RALISCH, R.; DEBIASI, H.; FRANCHINI, J. C.; TOMAZI, M.; HERNANI, L. C.; MELO, A. da S.; SANTI, A.; MARTINS, A. L. da S.; DE BONA, F. D. |
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Afiliação: |
UEL; HENRIQUE DEBIASI, CNPSO; JULIO CEZAR FRANCHINI DOS SANTOS, CNPSO; MICHELY TOMAZI, CPAO; LUIS CARLOS HERNANI, CNPS; ADOILDO DA SILVA MELO, CNPS; ANDERSON SANTI, CNPT; ALBA LEONOR DA SILVA MARTINS, CNPS; FABIANO DANIEL DE BONA, CNPT. |
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Título: |
Diagnóstico rápido da estrutura do solo - DRES [livro]. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Londrina: Embrapa Soja, 2017. |
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Páginas: |
63 p. |
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Série: |
(Embrapa Soja. Documentos, 390). |
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ISSN: |
1516-781x |
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Idioma: |
Português |
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Conteúdo: |
O Diagnóstico Rápido da Estrutura do Solo - DRES. Procedimentos para amostragem. Preparo e manipulação da amostra de solo. Atribuição de notas de qualidade estrutural. |
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Thesagro: |
Análise do solo; Fertilidade do solo. |
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Thesaurus NAL: |
Soil analysis; Soil fertility. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/160858/1/Doc-390-OL.pdf
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Marc: |
LEADER 00953nam a2200289 a 4500
001 2071114
005 2019-07-04
008 2017 bl uuuu 00u1 u #d
022 $a1516-781x
100 1 $aRALISCH, R.
245 $aDiagnóstico rápido da estrutura do solo - DRES [livro].$h[electronic resource]
260 $aLondrina: Embrapa Soja$c2017
300 $a63 p.
490 $a(Embrapa Soja. Documentos, 390).
520 $aO Diagnóstico Rápido da Estrutura do Solo - DRES. Procedimentos para amostragem. Preparo e manipulação da amostra de solo. Atribuição de notas de qualidade estrutural.
650 $aSoil analysis
650 $aSoil fertility
650 $aAnálise do solo
650 $aFertilidade do solo
700 1 $aDEBIASI, H.
700 1 $aFRANCHINI, J. C.
700 1 $aTOMAZI, M.
700 1 $aHERNANI, L. C.
700 1 $aMELO, A. da S.
700 1 $aSANTI, A.
700 1 $aMARTINS, A. L. da S.
700 1 $aDE BONA, F. D.
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