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Registro Completo
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
24/09/1996 |
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Data da última atualização: |
24/09/1996 |
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Autoria: |
SILVA, J. C. S. |
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Título: |
The response of Lolium perenne L s23 to light and temperature studied from experiment and modelling. |
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Ano de publicação: |
1994 |
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Fonte/Imprenta: |
[Edinburgh]: University of Edinburgh, 1994. |
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Páginas: |
214p. |
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Descrição Física: |
14 figuras; 55 tabelas. |
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Idioma: |
Inglês |
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Notas: |
PhD. Thesis. |
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Conteúdo: |
The growth of Lolium perenne s23 was studied under different conditions of temperature and shade in laboratory and in garden plots. Data on plant and leaf dry weight were used to establish simple growth models.In the laboratory three light intensities (330, l65 and 85 umol m-2 s-1) were combined with temperature regimes of 10/10, 15/10, 15/15, 20/10, 20/15 and 20/20 oC day/night in a 16h-photoperiod. Harvests were made when each of the first three leaves were fully expanded. In garden plots light quantity, light quality, R:FR ratio, temperature and total rainfall were monitored with seedlings grown in natural light (control), two artificial shade conditions (42 and 25% from total light) or two natural shade conditions effected by use of young poplar trees.Harvests were made at 5 day intervals per experiments conducted in June, July 1992 and August, September and October 1991. As expected significant effects of both light and temperature were found on total plant dry weight and onleaf dry weight. Increasing shade decreased plant weight at the same development stage, but tended to increase leaf lenght. These effects became progressively larger at successive harvests. Light also affected leaf cell number. Variation was largest in leaf three at 20/20 oC in high light and decreased with shade and temperature. In field experiments the influence of temperature was greater than that of shade on plant and leaf dry wight, leaf length and number of leaves coinciding in the main with laboratory ... MenosThe growth of Lolium perenne s23 was studied under different conditions of temperature and shade in laboratory and in garden plots. Data on plant and leaf dry weight were used to establish simple growth models.In the laboratory three light intensities (330, l65 and 85 umol m-2 s-1) were combined with temperature regimes of 10/10, 15/10, 15/15, 20/10, 20/15 and 20/20 oC day/night in a 16h-photoperiod. Harvests were made when each of the first three leaves were fully expanded. In garden plots light quantity, light quality, R:FR ratio, temperature and total rainfall were monitored with seedlings grown in natural light (control), two artificial shade conditions (42 and 25% from total light) or two natural shade conditions effected by use of young poplar trees.Harvests were made at 5 day intervals per experiments conducted in June, July 1992 and August, September and October 1991. As expected significant effects of both light and temperature were found on total plant dry weight and onleaf dry weight. Increasing shade decreased plant weight at the same development stage, but tended to increase leaf lenght. These effects became progressively larger at successive harvests. Light also affected leaf cell number. Variation was largest in leaf three at 20/20 oC in high light and decreased with shade and temperature. In field experiments the influence of temperature was greater than that of shade on plant and leaf dry wight, leaf length and number of leaves coinciding in the main with la... Mostrar Tudo |
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Palavras-Chave: |
Azevem perene; Experimentation models; Experimento; Feed grasses; Growth. |
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Thesagro: |
Crescimento; Gramínea Forrageira; Lolium Perenne; Radiação Luminosa; Temperatura. |
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Thesaurus NAL: |
light; temperature. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02293nam a2200277 a 4500
001 1556430
005 1996-09-24
008 1994 bl uuuu m 00u1 u #d
100 1 $aSILVA, J. C. S.
245 $aThe response of Lolium perenne L s23 to light and temperature studied from experiment and modelling.
260 $a[Edinburgh]: University of Edinburgh$c1994
300 $a214p.$c14 figuras; 55 tabelas.
500 $aPhD. Thesis.
520 $aThe growth of Lolium perenne s23 was studied under different conditions of temperature and shade in laboratory and in garden plots. Data on plant and leaf dry weight were used to establish simple growth models.In the laboratory three light intensities (330, l65 and 85 umol m-2 s-1) were combined with temperature regimes of 10/10, 15/10, 15/15, 20/10, 20/15 and 20/20 oC day/night in a 16h-photoperiod. Harvests were made when each of the first three leaves were fully expanded. In garden plots light quantity, light quality, R:FR ratio, temperature and total rainfall were monitored with seedlings grown in natural light (control), two artificial shade conditions (42 and 25% from total light) or two natural shade conditions effected by use of young poplar trees.Harvests were made at 5 day intervals per experiments conducted in June, July 1992 and August, September and October 1991. As expected significant effects of both light and temperature were found on total plant dry weight and onleaf dry weight. Increasing shade decreased plant weight at the same development stage, but tended to increase leaf lenght. These effects became progressively larger at successive harvests. Light also affected leaf cell number. Variation was largest in leaf three at 20/20 oC in high light and decreased with shade and temperature. In field experiments the influence of temperature was greater than that of shade on plant and leaf dry wight, leaf length and number of leaves coinciding in the main with laboratory ...
650 $alight
650 $atemperature
650 $aCrescimento
650 $aGramínea Forrageira
650 $aLolium Perenne
650 $aRadiação Luminosa
650 $aTemperatura
653 $aAzevem perene
653 $aExperimentation models
653 $aExperimento
653 $aFeed grasses
653 $aGrowth
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Embrapa Cerrados (CPAC) |
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