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ACCLIMATION OF PHOTOSYNTHESIS AND GROWTH OF BANANA (MUSA SP.) TO NATURAL SHADE IN THE HUMID TROPICS

Published online by Cambridge University Press:  01 July 2008

A. M. W. K. SENEVIRATHNA ,
C. M. STIRLING  and
V. H. L. RODRIGO
A. M. W. K. SENEVIRATHNA*
Affiliation:
Rubber Research Institute of Sri Lanka, Dartonfield, Agalawatta 12200, Sri Lanka
C. M. STIRLING
Affiliation:
School of Agricultural and Forest Sciences, University of Wales, Bangor, LL57 2UW, United Kingdom
V. H. L. RODRIGO
Affiliation:
Rubber Research Institute of Sri Lanka, Dartonfield, Agalawatta 12200, Sri Lanka
*
†Corresponding author: [email protected], [email protected]
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Summary

Growth and photosynthetic performance of banana (Musa sp.) grown in three levels of natural shade (33, 55 and 77% reduction in incoming radiation) were compared to an unshaded control treatment. Net CO2 assimilation rates generally decreased with increasing shade. Chlorophyll fluorescence revealed short-term dynamic photoinhibition under high light conditions but no evidence of sustained photoinhibitory damage to photosystem II. Dynamic photoinhibition decreased with increasing shade, with the greatest depression in the variable to maximal fluorescence ratio (Fv/Fm) occurring in unshaded plants during the middle of the day. Specific leaf area and leaf area ratio increased proportionately with increasing shade, whilst the chlorophyll a/b ratio decreased, reflecting a greater efficiency of light utilization under shady conditions. The optimum shade level for photosynthetic productivity would be one at which the level of photosynthetic photon flux density (PPFD) is high enough to saturate CO2 assimilation but low enough to induce shade acclimation and to reduce photoinhibition. Under the conditions studied here, the saturation level of PPFD was around 1000 μmol m−2 s−1, a light level typical of the tree-based intercropping systems in which banana is commonly grown in the tropics.

Type
Research Article
Information
Experimental Agriculture , Volume 44 , Issue 3 , July 2008 , pp. 301 - 312
Copyright
Copyright © Cambridge University Press 2008

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References

REFERENCES

Anderson, J. M. and Osmond, C. B. (1987). Shade-sun responses: compromises between acclimation and photoinhibition. In Photoinhibition, 1–38 (Eds Kyle, D. J., Osmond, C. B., and Arntzen, C. J.). Amsterdam: Elsevier.Google Scholar
Barradas, V. L. and Fanjul, L. (1986). Microclimatic characterisation of shaded and open-grown coffee (Coffea arabica L.) plantations in Mexico. Agriculture and Forest Meteorology 38: 102–112.CrossRefGoogle Scholar
Damasco, O. P., Smith, M. K., Godwin, I. D., Adkins, S. W., Smillie, R. M. and Hetherington, S. E. (1997). Micropropagated dwarf off-type Cavendish bananas (Musa sp., AAA) show improved tolerance to suboptimal temperatures. Australian Journal of Agricultural Research 48:377–384.Google Scholar
Evans, J. R. and Poorter, H. (2001). Photosynthetic acclimation of plants to growth irradiance: the relative importance of specific leaf area and nitrogen partitioning in maximising carbon gain. Plant, Cell and Environment 24:755–767.CrossRefGoogle Scholar
Hipkins, M. F. and Baker, N. R. (1986). Photosynthesis: Energy Transduction, a Practical Approach. Oxford: IRL press.Google Scholar
Hunt, R. (1978). Plant Growth Analysis. London: Edward Arnold Limited.Google Scholar
Ishida, A., Nakano, T., Matsumoto, Y., Sakoda, M. and Ang, L. H. (1999). Diurnal changes in leaf gas exchange and chlorophyll fluorescence in tropical tree species with increasing light requirements. Ecological Research 14:77–88.Google Scholar
Israeli, Y., Schwartz, A., Plaut, Z. and Yakir, D. (1996). Effects of light regime on δ13C, photosynthesis and yield of field grown banana (Musa sp.). Plant, Cell and Environment 19: 225–230.Google Scholar
Robinson, J. C. and Nel, D. J. (1988). Plant density studies with banana (cv. Williams) in a subtropical climate I. Vegetative morphology, phenology and plantation microclimate. Horticultural Science 63: 303–313.CrossRefGoogle Scholar
Rodrigo, V. H. L., Stirling, C. M., Teklehaimanot, Z. and Nugawela, A. (1997). The effect of planting density on growth and development of component crops in rubber/banana intercropping systems. Field Crops Research 52:95–108.CrossRefGoogle Scholar
Rodrigo, V. H. L., Stirling, C. M., Teklehaimanot, Z. and Nugawela, A. (2001). Intercropping with banana to improve fractional interception and radiation-use efficiency of immature rubber plantations. Field Crops Research 69:237–249.Google Scholar
Senevirathna, A. M. W. K. (2001). The influence of farmer knowledge, shade and planting density on smallholder rubber/banana intercropping in Sri Lanka. PhD Thesis. University of Wales, UK.Google Scholar
Senevirathna, A. M. W. K., Stirling, C. M. and Rodrigo, V. H. L. (2003). Growth, photosynthetic performance and shade adaptation of rubber (Hevea brasiliensis Muell. Arg.) grown in natural shade. Tree Physiology 23:705–712.CrossRefGoogle ScholarPubMed
Thomas, D. S. and Turner, D. W. (1998). Leaf gas exchange of droughted and irrigated banana cv. Williams (Musa sp.) growing in hot, arid conditions. Horticultural Science and Biotechnology 73:419–429.Google Scholar
Thomas, D. S. and Turner, D. W. (2001). Banana (Musa sp.) leaf gas exchange and chlorophyll fluorescence in response to soil drought, shading and lamina folding. Scientia Horticulturae 90:93–108.CrossRefGoogle Scholar
Valladares, F. and Pearcy, R. W. (1997). Interactions between water stress, sun-shade acclimation, heat tolerance and photoinhibition in the sclerophyll Heteromeles arbutifolia. Plant, Cell and Environment 20:25–36.Google Scholar
Yogaratnam, N. (1983). Fertilising of rubber and associated cover crops. In A Handbook of Rubber Culture and Processing (Eds Peris, O. S. and Fernando, D. M.). Sri Lanka: Rubber Research Institute of Sri Lanka.Google Scholar