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The sources of assimilate for grain development in tall and short sorghum

Published online by Cambridge University Press:  27 March 2009

P. R. Goldsworthy
P. R. Goldsworthy
Affiliation:
Institute for Agricultural Research, Ahmadu Bello University, Samaru, Zaria, Nigeria
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Summary

The dry weight contributed to the grain yield of sorghum by different parts of the plant was measured by removing laminae and by shading the head. A Nigerian tall variety formed more dry weight after heading and had a larger leaf area duration than a short-season, hybrid sorghum, but its grain yield was smaller. Laminae contributed more than 80% of the dry weight formed after heading in the Nigerian sorghum but less than half of this went into the grain. The remainder went into the stem, mainly to replace respiratory losses, or accumulated in the rachis and branches of the head. Top, middle and bottom groups of laminae contributed 42, 22 and 12% respectively to the dry weight of the grain; the remaining 24% was contributed by the sheaths. In the short-season hybrid sorghum over 70% of the dry matter formed after heading was stored in the grain. Only about half of this came from the laminae; assimilation in the head and in the sheaths contributed about equally to the remainder.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 74 , Issue 3 , June 1970 , pp. 523 - 531
Copyright
Copyright © Cambridge University Press 1970

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References

REFERENCES

Allison, J. C. S. (1964). Physiological studies of the post-flowering period in Zea mays L. Ph.D. thesis, University of London.Google Scholar
Allison, J. C. S. & Watson, D. J. (1966). The production and distribution of dry matter in maize after flowering. Ann. Bot., N.S. 30, 365–81.CrossRefGoogle Scholar
Buttrose, M. S. & May, L. H. (1959). Physiology of cereal grain. I. The source of carbon for the developing kernel. Aust. J. biol. Sci. 12, 40–52.CrossRefGoogle Scholar
Carr, D. J. & Wardlaw, I. F. (1965). The supply of photosynthetio assimilates to the ear of wheat. Aust. J. biol. Sci. 18, 711–19.Google Scholar
Enyi, B. A. C. (1962). The contribution of different organs to grain weight in upland and swamp rice. Ann. Bot. 26, 529–31.CrossRefGoogle Scholar
Goldsworthy, P. R. (1967). Responses of cereals to fertiliser in Northern Nigeria. Expl Agric. 3, 1, 29–40.CrossRefGoogle Scholar
Goldsworthy, P. R. (1970). The growth and yield of tall and short sorghum in Nigeria. J. agric. Sci., Gamb. (in the Press).CrossRefGoogle Scholar
Goldsworthy, P. R. & Tayler, R. S. (1970). The effect of plant spacing on grain yield of tall and short sorghum in Nigeria. J. agric. Sci., Gamb. 74, 1–10.CrossRefGoogle Scholar
Nösberger, J. & Thorne, G. N. (1965). The effect of removing florets or shading the ear of barley on production and distribution of dry matter. Ann. Bot., N.S. 29, 635–45.CrossRefGoogle Scholar
O'Brien, T. P. & Wardlaw, I. F. (1961). The direct assay of 14C in dried plant materials. Aust. J. biol. Sci. 14, 361–7.CrossRefGoogle Scholar
Stickler, F. C. & Pauli, A. W. (1961). Grain producing value of leaf sheaths of grain sorghum. Agron. J. 53, 352–53.CrossRefGoogle Scholar
Tanaka, A. & Kawano, K. (1965). Leaf characters relating to nitrogen response in the rice plant. Soil Sci. PI. Nutr. 11 (6), 251–8.Google Scholar
Thorne, G. N. (1959). Photosynthesis of laminae and sheath of barley leaves. Ann. Bot., N.S. 23, 365–70.CrossRefGoogle Scholar
Thorne, G. N. (1963). Varietal differences in photosynthesis of ears and leaves of barley. Ann. Bot., N.S. 27, 165–73.Google Scholar
Thorne, G. N. (1965). Photosynthesis of ears and flag leaves of wheat and barley. Ann. Bot., N.S. 29, 317–29.CrossRefGoogle Scholar
Thorne, G. N. (1966). Physiological aspects of grain yield in cereals. In The Growth of Cereals and Grasses (ed. Milthorpe, F. L. and Ivins, J. D.). London: Butterworths.Google Scholar
Whistles, R. N. & Young, J. R. (1960). Formation of starch in wheat grain. Cereal Chem. 37, 204–11.Google Scholar
Yates, F. (1937). The Design and Analysis of Factorial Experiments. Imperial Bureaux of Soil Science, Technical Communication No. 35.Google Scholar