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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Norte / UEP-Parnaíba. |
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Data corrente: |
06/02/1996 |
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Data da última atualização: |
06/02/1996 |
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Autoria: |
HSIEH, T. F.; TU, C. C.; TSAI, W. H. |
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Título: |
Effect of temperature and moisture on the occurrence of lily southern blight caused by Sclerotium rolfsii Sacc. |
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Ano de publicação: |
1990 |
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Fonte/Imprenta: |
Journal of Agricultural Research of China, v.39, n.4, p. 315-324, 1990. |
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Idioma: |
Inglês |
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Conteúdo: |
Lily southern blight was caused by Sclerotium rolfsii Sacc. When 5 dried sclerotis (Inoculum density about 2.6 sclerotia per 100cm3 of soil) were inoculated into soil around the bulb of lily within 1cm, the yellowing symptom could appear obviously within 2 weeks. Moreover, the disease severity increased gradually with the increasing number of inoculating slcerotia. Eight varieties of lily tested for resistance to S.rolfsii (Sr029) indicated that all of them could be infested in 2 weeksafter inoculation. Varieties polyana and Cote d'azur or lilium asiatichybrid group were more susceptible than others. All of the growth stages of lily were susceptible to the pathogen especially at the visible bud stage. On soil plate, the maximum sclerotial germination occurredat 20-28oC. The percentage of germination was increased when the sclerotia were incubated under drying condition for 3 days at 20oC and thenremoistened and placed at 28oC. Consistently, the greater disease severity was obtained when the lily plants were transferred into the 28oC condition after 1 week of incubation under 20oC. In general, the best solute water potential for sclerotial germination and mycelial growth was between -1 and -10 bars. However, with decreasing of solute water potential from -10 to -50 bars, the percentage of germination and growth rate were decreased. Changing soil moisture promoted disease severity: the disease severity was about 0.75 when soil moisture was adjusted to about 30% moisture holding capacity (MHC) and then progressively. MenosLily southern blight was caused by Sclerotium rolfsii Sacc. When 5 dried sclerotis (Inoculum density about 2.6 sclerotia per 100cm3 of soil) were inoculated into soil around the bulb of lily within 1cm, the yellowing symptom could appear obviously within 2 weeks. Moreover, the disease severity increased gradually with the increasing number of inoculating slcerotia. Eight varieties of lily tested for resistance to S.rolfsii (Sr029) indicated that all of them could be infested in 2 weeksafter inoculation. Varieties polyana and Cote d'azur or lilium asiatichybrid group were more susceptible than others. All of the growth stages of lily were susceptible to the pathogen especially at the visible bud stage. On soil plate, the maximum sclerotial germination occurredat 20-28oC. The percentage of germination was increased when the sclerotia were incubated under drying condition for 3 days at 20oC and thenremoistened and placed at 28oC. Consistently, the greater disease severity was obtained when the lily plants were transferred into the 28oC condition after 1 week of incubation under 20oC. In general, the best solute water potential for sclerotial germination and mycelial growth was between -1 and -10 bars. However, with decreasing of solute water potential from -10 to -50 bars, the percentage of germination and growth rate were decreased. Changing soil moisture promoted disease severity: the disease severity was about 0.75 when soil moisture was adjusted to about 30% moisture holdin... Mostrar Tudo |
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Palavras-Chave: |
Germinacao de esclerocio; Moisture; Sclerotial germination. |
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Thesagro: |
Sclerotium Rolfsii; Temperatura; Umidade. |
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Thesaurus Nal: |
temperature. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02218naa a2200229 a 4500
001 1075934
005 1996-02-06
008 1990 bl --- 0-- u #d
100 1 $aHSIEH, T. F.
245 $aEffect of temperature and moisture on the occurrence of lily southern blight caused by Sclerotium rolfsii Sacc.
260 $c1990
520 $aLily southern blight was caused by Sclerotium rolfsii Sacc. When 5 dried sclerotis (Inoculum density about 2.6 sclerotia per 100cm3 of soil) were inoculated into soil around the bulb of lily within 1cm, the yellowing symptom could appear obviously within 2 weeks. Moreover, the disease severity increased gradually with the increasing number of inoculating slcerotia. Eight varieties of lily tested for resistance to S.rolfsii (Sr029) indicated that all of them could be infested in 2 weeksafter inoculation. Varieties polyana and Cote d'azur or lilium asiatichybrid group were more susceptible than others. All of the growth stages of lily were susceptible to the pathogen especially at the visible bud stage. On soil plate, the maximum sclerotial germination occurredat 20-28oC. The percentage of germination was increased when the sclerotia were incubated under drying condition for 3 days at 20oC and thenremoistened and placed at 28oC. Consistently, the greater disease severity was obtained when the lily plants were transferred into the 28oC condition after 1 week of incubation under 20oC. In general, the best solute water potential for sclerotial germination and mycelial growth was between -1 and -10 bars. However, with decreasing of solute water potential from -10 to -50 bars, the percentage of germination and growth rate were decreased. Changing soil moisture promoted disease severity: the disease severity was about 0.75 when soil moisture was adjusted to about 30% moisture holding capacity (MHC) and then progressively.
650 $atemperature
650 $aSclerotium Rolfsii
650 $aTemperatura
650 $aUmidade
653 $aGerminacao de esclerocio
653 $aMoisture
653 $aSclerotial germination
700 1 $aTU, C. C.
700 1 $aTSAI, W. H.
773 $tJournal of Agricultural Research of China$gv.39, n.4, p. 315-324, 1990.
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Registro original: |
Embrapa Meio Norte / UEP-Parnaíba (CPAMN-UEPP) |
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Biblioteca |
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Registro |
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Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
11/02/2003 |
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Data da última atualização: |
29/09/2016 |
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Tipo da produção científica: |
Comunicado Técnico/Recomendações Técnicas |
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Autoria: |
BARCELLOS, A. de O.; VILELA, L.; ZOBY, J. L. F. |
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Afiliação: |
ALEXANDRE DE OLIVEIRA BARCELLOS, CPAC; LOURIVAL VILELA, CPAC; JOSÉ LUIS FERNANDES ZOBY, CPAC. |
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Título: |
Estabelecimento de Leucena associada com cultivos anuais. |
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Ano de publicação: |
2001 |
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Fonte/Imprenta: |
Planaltina: Embrapa Cerrados, 2001. |
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Páginas: |
4 p. |
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Série: |
(Embrapa Cerrados. Comunicado Tecnico, 64). |
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Idioma: |
Português |
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Palavras-Chave: |
Cultura anual; Forrageira Leguminosa; Forrageira: Leguminosa; Leucena; PVFORG200. |
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Thesagro: |
Cerrado; Doença; Leucaena; Planta Forrageira; Semeadura; Solo. |
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Thesaurus NAL: |
forage. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/147999/1/comtec-64.pdf
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Marc: |
LEADER 00756nam a2200289 a 4500
001 1566190
005 2016-09-29
008 2001 bl uuuu u0uu1 u #d
100 1 $aBARCELLOS, A. de O.
245 $aEstabelecimento de Leucena associada com cultivos anuais.
260 $aPlanaltina: Embrapa Cerrados$c2001
300 $a4 p.
490 $a(Embrapa Cerrados. Comunicado Tecnico, 64).
650 $aforage
650 $aCerrado
650 $aDoença
650 $aLeucaena
650 $aPlanta Forrageira
650 $aSemeadura
650 $aSolo
653 $aCultura anual
653 $aForrageira Leguminosa
653 $aForrageira: Leguminosa
653 $aLeucena
653 $aPVFORG200
700 1 $aVILELA, L.
700 1 $aZOBY, J. L. F.
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