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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
11/08/1999 |
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Data da última atualização: |
18/04/2023 |
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Autoria: |
VOLAIRE, F.; THOMAS, H. |
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Afiliação: |
Institut National de Recherche Agronomique, San Giuliano 20230, France and Environmental Biology Department, Institute of Grassland and Environmental Research, Plas Gogerddan, Aberystwyth, Dyfed SY23 3EB, UK. |
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Título: |
Effects of drought on water relations, mineral uptake, water-soluble crabohydrate accumulation and survival of two contrasting populations of cocksfoot (Dactylis glomerata L.). |
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Ano de publicação: |
1995 |
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Fonte/Imprenta: |
Annals of Botany, v.75, p.513-524, 1995. |
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Idioma: |
Inglês |
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Conteúdo: |
The role of physiological responses in survival of prolonged soil moisture deficit was investigated in vegetative plants of two Dactylis glomerata populations: KM2 (drought-resistant) and Lutetia (susceptible). The plants were grown in 1m-deep soil columns in a controlled environment. After 56 d of full irrigation, water was withheld for 80 d, by which time all soil moisture had been consumed; the plants were then rewatered for a further 19 d. As drought progressed, leaf extension decreased to zero, water status declined, and water-soluble carbohydrates (WSC) at first increased and then decreased. The most pronounced differences between the two populations was that all KM2 tillers survived the drought, but 34% of Lutetia tillers died. In comparison with Lutetia, KM2 was characterized by (a) slower shoot growth rate. |
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Palavras-Chave: |
Cocksfoot; Dactylis glomerata L; Drought survival; Osmotic asjustment; Phosphate; Root-growth; Variety comparison; Water-soluble carbohydrates; water-stress. |
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Thesaurus Nal: |
proline. |
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Categoria do assunto: |
-- |
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Marc: |
null
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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| 1. |  | LIMA, A. de O.; LIMA-FILHO, F. P.; DIAS, N. da S.; REGO, P. R. do A.; BLANCO, F. F.; FERREIRA NETO, M. Mechanisms controlling surface water quality in the cobras river sub-basin, northeastern Brazil. Revista Caatinga, Mossoró, v. 30, n. 1, p. 181-189, 2017.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
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