Article contents
PHOTOSYNTHETIC CHARACTERISTICS AND FIBRE PRODUCTION FOLLOWING DEFOLIATION IN ATTALEA FUNIFERA MART., ARECACEAE, GROWING UNDER FULL SUN AND FOREST UNDERSTOREY
Published online by Cambridge University Press: 01 March 2013
Summary
The effects of leaves cut during fibre harvesting of Attalea funifera under contrasting irradiance availability were evaluated, studying defoliation-induced changes in photosynthetic and growth characteristics and fibre production in adult individuals of A. funifera growing under full sun and forest understorey. Fibre harvesting was performed with or without (control plants) leaf removal twice in a 12-month interval. Maximum measured values of net photosynthesis (A), stomatal conductance and transpiration were higher in full sun defoliated palms than in non-defoliated palms in the same environment or in understorey palms of the two treatments. Non-defoliated palms from the two environments emitted more leaves than defoliated palms in the same evaluation period. The increment in the leaf-level rate of carbon assimilation following defoliation did not lead to high production of fibre, suggesting that the photosynthetic compensation for leaf removal was not effective, at least during the period of evaluation. The results indicate that leaf removal during harvesting did not represent an advantage for fibre production and may even lead to decreases in leaf and fibre production.
- Type
- Research Article
- Information
- Copyright
- Copyright © Cambridge University Press 2013
References
REFERENCES
- 5
- Cited by