Photosynthesis, growth, and survival in seedlings of four tropical fruit-tree species under intense radiation
Acta amaz
;
51(1): 1-9, jan.-mar. 2021.
Artigo
em Inglês
| LILACS
| ID: biblio-1352826
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. (AU)
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Carotenoides
/
Cloroplastos
/
Complexo de Proteína do Fotossistema II
/
Floresta Úmida
/
Aclimatação
Idioma:
Inglês
Revista:
Acta amaz
Assunto da revista:
Ciência
Ano de publicação:
2021
Tipo de documento:
Artigo
País de afiliação:
Colômbia
Instituição/País de afiliação:
Corporación Colombiana de Investigación Agropecuaria AGROSAVIA/CO
/
Universidad Nacional de Colombia/CO
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