| Registro completo |
| Provedor de dados: |
Acta Amazonica
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| País: |
Brazil
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| Título: |
Photosynthesis, growth, and survival in seedlings of four tropical fruit-tree species under intense radiation
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| Autores: |
ORTIZ,Daniel
MORENO,Flavio
DÍEZ,Maria Claudia
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| Data: |
2021-03-01
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| Ano: |
2021
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| Palavras-chave: |
Acclimation
Agroforestry systems
Carotenoids
Chloroplasts
Photosystem II
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| Resumo: |
ABSTRACT In the Amazon region, agroforestry systems (AFSs) are recommended as a sustainable production alternative for local communities. A common component in Amazonian AFSs are tropical fruit trees, which can form the canopy or grow in the understory. In this study, we evaluated the effect of high radiation on photosynthesis, growth and seedling survival of four Amazonian fruit-tree species: Theobroma cacao, Eugenia stipitata, Inga edulis and Psidium guajava. Growth, chlorophyll fluorescence, gas exchange, and leaf pigments were measured in seedlings of each species grown for 12 months inside shade houses with low (8%), medium (30%) and high relative illumination (100%). Eugenia stipitata and T. cacao had the lowest acclimation capacity to high solar radiation, followed by I. edulis. Therefore, these species must be grown under intermediate light levels in early growth stages, to protect them from direct sunlight. In contrast, P. guajava seedlings demonstrated high tolerance to elevated radiation, therefore, this species can be planted under full sunlight.
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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=S0044-59672021000100001
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| Editor: |
Instituto Nacional de Pesquisas da Amazônia
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| Relação: |
10.1590/1809-4392202000752
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| Formato: |
text/html
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| Fonte: |
Acta Amazonica v.51 n.1 2021
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| Direitos: |
info:eu-repo/semantics/openAccess
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