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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
31/03/1999 |
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Data da última atualização: |
31/03/1999 |
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Autoria: |
KNAPP, A. K.; GILLIAM, F. S. |
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Afiliação: |
Division of Biology, Kansas State University, Manhattan, Kansas. |
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Título: |
Response of Andropogon gerardii (Poaceaea) to fire-induced high vs. low irradiance environments in tallgrass prairie: Leaf structure and photosynthetic pigments. |
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Ano de publicação: |
1985 |
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Fonte/Imprenta: |
American Journal of Botany, v.72, n.11, p.1668-1671. 1985. |
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Idioma: |
Inglês |
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Conteúdo: |
Photosynthetic pigments and several structural characteristics werer measured in leaves of Andropogon gerardii from tallgrass prairie populations in an unburned, low-irradiance site and a buirned, high-irradiance site to determine if these species displayed sun/shade differences similar to those documented in forest species. Early in the growing seasons, leaves of A. gerardii in the low-irradiance, unburned site had significantly lower stomatal density, pore lenght, and conductance, as well as specific leaf mass and thickness than leaves from the high-irradiance, burned site. Moreover, the chlorophyll a:b ratio, carotenoid content, and bundle sheath-vascular complex area were significantly lower, but chlorophyll content (mass/mass) was greater in leaves in unburned vs. burned sites. These differences are consistent with sun/shade adaptations reported for forest understory plants and may contribute to the low productivity of A. gerardii in unburned tallgrass prairie. |
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Palavras-Chave: |
Alto fogo induzido; Estrutura da folha; Fire-induced high; Leaf structure; Photosynthetic pigments; Tallgrass prairie. |
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Thesagro: |
Capim; Fotossíntese; Pigmento. |
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Thesaurus Nal: |
Andropogon gerardii; Poaceae. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01799naa a2200265 a 4500
001 1794989
005 1999-03-31
008 1985 bl --- 0-- u #d
100 1 $aKNAPP, A. K.
245 $aResponse of Andropogon gerardii (Poaceaea) to fire-induced high vs. low irradiance environments in tallgrass prairie$bLeaf structure and photosynthetic pigments.
260 $c1985
520 $aPhotosynthetic pigments and several structural characteristics werer measured in leaves of Andropogon gerardii from tallgrass prairie populations in an unburned, low-irradiance site and a buirned, high-irradiance site to determine if these species displayed sun/shade differences similar to those documented in forest species. Early in the growing seasons, leaves of A. gerardii in the low-irradiance, unburned site had significantly lower stomatal density, pore lenght, and conductance, as well as specific leaf mass and thickness than leaves from the high-irradiance, burned site. Moreover, the chlorophyll a:b ratio, carotenoid content, and bundle sheath-vascular complex area were significantly lower, but chlorophyll content (mass/mass) was greater in leaves in unburned vs. burned sites. These differences are consistent with sun/shade adaptations reported for forest understory plants and may contribute to the low productivity of A. gerardii in unburned tallgrass prairie.
650 $aAndropogon gerardii
650 $aPoaceae
650 $aCapim
650 $aFotossíntese
650 $aPigmento
653 $aAlto fogo induzido
653 $aEstrutura da folha
653 $aFire-induced high
653 $aLeaf structure
653 $aPhotosynthetic pigments
653 $aTallgrass prairie
700 1 $aGILLIAM, F. S.
773 $tAmerican Journal of Botany$gv.72, n.11, p.1668-1671. 1985.
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Registro original: |
Embrapa Pantanal (CPAP) |
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