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Sink-Source Relations in Cassava: Effects of Reciprocal Grafting on Yield and Leaf Photosynthesis

Published online by Cambridge University Press:  03 October 2008

Didier Pellet  and
Mabrouk A. El-Sharkawy
Didier Pellet
Affiliation:
Centro International de Agricultura Tropical (CIAT), AA 6713, Cali, Colombia
Mabrouk A. El-Sharkawy
Affiliation:
Centro International de Agricultura Tropical (CIAT), AA 6713, Cali, Colombia
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Summary

Two contrasting clones of cassava (Manihot esculenta) were reciprocally grafted to test the hypothesis that the yield of cassava is limited by the number of storage roots. Effects of the root sink on leaf gas exchange were also tested under field conditions using a portable infra-red gas analyzer. Storage root number and root yield were affected by stock size and root yield was associated with the number of storage roots. The harvest index and sink-source ratio (root numberz/leaf area index) were correlated with root number. A feedback effect of root number on single-leaf photosynthesis was observed in one clone. It is concluded that the number of storage roots may be used as an indicator of sink strength.

Type
Research Article
Information
Experimental Agriculture , Volume 30 , Issue 3 , July 1994 , pp. 359 - 367
Copyright
Copyright © Cambridge University Press 1994

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References

REFERENCES

CIAT (1991). Cassava Program Annual Report for 1987–1991. Cali, Colombia: CIAT.Google Scholar
Cock, J. H., Franklin, D., Sandoval, G. & Juri, P. (1979). The ideal cassava plant for maximum yield. Crop Science 19:271–279.CrossRefGoogle Scholar
Dahniya, M. T., Oputa, C. O. & Hahn, S. K. (1982). Investigating source-sink relations in cassava by reciprocal grafts. Experimental Agriculture 18:399–402.CrossRefGoogle Scholar
Dharmaputra, T. S. & De Bruijn, C. H. (1976). The Mukibat system of cassava production. In Proceedings of Fourth Symposium of International Society for Tropical Root Crops, 94–98. Cali, Colombia: CIAT.Google Scholar
EI-Sharkawy, M. A., Cock, J. H., Lynam, J. K., Hernandez, A. D. P. & Cadavid, L. F. (1990). Relationships between biomass, root-yield and single-leaf photosynthesis in field-grown cassava. Field Crops Research 25:183–201.CrossRefGoogle Scholar
Herold, A. (1980). Regulation of photosynthesis by sink activity—the missing link. New Phytologist 86:131–144.CrossRefGoogle Scholar
Ho, L. C. (1988). Metabolism and compartmentation of imported sugars in sink organs in relation to sink strength. Annual Review of Plant Physiology and Plant Molecular Biology 39:355–378.CrossRefGoogle Scholar
Hozyo, Y. (1977). The influences of source and sink on plant production of Ipomoea grafts. japan Agricultural Research Quarterly 11:77–83.Google Scholar
Mayoral, M. L., Plaut, Z. & Reinhold, L. (1985). Effect of translocation-hindering procedures on source leaf photosynthesis in cucumber. Plant Physiology 77:712–717.CrossRefGoogle ScholarPubMed
Pellet, D. & EI-Sharkawy, M. A. (1993). Cassava varietal response to phosphorus fertilization. I. Yield, biomass and gas exchange. Field Crops Research 35:1–11.CrossRefGoogle Scholar
Ramanujam, T. & Ghosh, S. P. (1990). Investigations of source-sink relations in cassava using reciprocal grafting. Experimental Agriculture 26:189–195.CrossRefGoogle Scholar
Rapoport, H. F. & Loomis, R. S. (1985). Interaction of storage root and shoot in grafted sugarbeet and chard. Crop Science 25:1079–1084.CrossRefGoogle Scholar
Tan, S. L. & Cock, J. H. (1979). Branching habit as a yield determinant in cassava. Field Crops Research 2:281–289.Google Scholar
Veltkamp, H. J. (1985). Physiological causes of yield variation in cassava. Agricultural University Wageningen Papers 85:1–103.Google Scholar
Wardlaw, I. F. (1990). The control of carbon partitioning in plants. New Phytologist 116:341–381.CrossRefGoogle ScholarPubMed
Williams, C. N. (1974). Growth and productivity of tapioca (Manihot utilissima). IV. Development and yield of tubers. Experimental Agriculture 10:9–16.CrossRefGoogle Scholar