| Registro completo |
| Provedor de dados: |
BJM
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| País: |
Brazil
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| Título: |
The interactive effect of phosphorus and nitrogen on "in vitro" spore germination of Glomus etunicatum Becker & Gerdemann, root growth and mycorrhizal colonization
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| Autores: |
Bressan,Wellington
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| Data: |
2001-12-01
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| Ano: |
2001
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| Palavras-chave: |
Mycorrhiza
Glomus etunicatum
Spore germination
Root growth
Root colonization
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| Resumo: |
The effects of P and N amendment and its interactions on spore germination, root growth and colonized root length by Glomus etunicatum Becker & Gerdemann (INVAM S329) was studied "in vitro" in RiT - DNA transformed roots of Anthylis vulneraria sub sp. Sampaiana (Kidney vetch). Three N media concentrations (5, 10 and 50 mg/l) at P constant level (2 mg/l) and three P media concentrations (2, 10 and 20 mg/l) at N constant level (5 mg/l) were utilized as a treatment. Bécard & Fortin medium was used as a basal medium for root growth and colonized root length, and water/agar (0.8%) media was the control for spore germination. Spore germination of G. etunicatum at low P level was reduced by N addition in relation to the control media, and at low N level addition of P stimulated spore germination. Total root length was stimulated by N addtion at low P level, but no significant difference (p£0.05) was observed between 10 and 50 mg/l of N. P addition at low N level media also stimulated total root growth, and a significant difference (p£0.05) was observed among P concentrations. Colonized root length by G. etunicatum increased significantly (p£0.05) with P additions at low N levels. Under low P level no significant differences was found between 10 and 50 mg/l of N. These results demonstrate that the interaction between P and N affect differently spore germination, root growth and colonized root lenght.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822001000400004
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| Editor: |
Sociedade Brasileira de Microbiologia
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| Relação: |
10.1590/S1517-83822001000400004
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| Formato: |
text/html
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| Fonte: |
Brazilian Journal of Microbiology v.32 n.4 2001
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| Direitos: |
info:eu-repo/semantics/openAccess
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