aspectos anatômicos e adaptativos das partes vegetativas de spartina densiflora brong. (gramineae) da marisma do estuário da lagoa dos patos-rs anatomic and adaptatives aspects of the vegetatives parts of spartina densiflora brong. (gramineae) from salt marshes of the patos lagoon estuary - rs
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ID: 230892
1991
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Abstract
Spartina densiflora Brong. é uma gramínea típica das marismas doestuário da lagoa dos Patos, Rio Grande do Sul, Brasil. A espécie apresenta adaptações morfoanatômicas em relação à salinidade, inundação e condições anaeróbicas que caracterizam este ambiente estressante. As adaptações xeromórficas e halofíticas desta espécie são a presença de estômatos protegidos por papilas; alta lignificação nas folhas, rizoma e raízes; enrolamento foliar e glândulas secretoras de sal. Como adaptação à sobrevivência ao solo anaeróbico, a espécie apresenta espaços intercelulares nas folhas, rizoma e raízes.
Spartina densiflora Brong. is a typical grass in salt marshes of the Patos lagoon estuary, Rio Grande do Sul, Brazil. The species shows morphological adaptations in relation to salinity, flooding and, anaerobic soils, characteristic for this stressful environment. The principal xerophytic and halophytic adaptations observed in this species are lenghwise curling of the leaves with stomates protected by papilla; increased lignification in the leaves, rhyzomes, roots and salt glands spread. The presence of intercellular spaces in the leaves, rhyzomes and roots is an adaptation that permits the plants survival in anaerobic soils.
Spartina densiflora Brong. is a typical grass in salt marshes of the Patos lagoon estuary, Rio Grande do Sul, Brazil. The species shows morphological adaptations in relation to salinity, flooding and, anaerobic soils, characteristic for this stressful environment. The principal xerophytic and halophytic adaptations observed in this species are lenghwise curling of the leaves with stomates protected by papilla; increased lignification in the leaves, rhyzomes, roots and salt glands spread. The presence of intercellular spaces in the leaves, rhyzomes and roots is an adaptation that permits the plants survival in anaerobic soils.
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perazzolo1991actaaspectos
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| Authors | ;Mara Perazzolo;Fátima Pinheiro |
| Journal | monatshefte für chemie chemical monthly |
| Year | 1991 |
| DOI |
10.1590/S0102-33061991000200001
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