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Investigations on the physiology of yield in winter wheat, by comparisons of varieties and by artificial variation in grain number per ear

Published online by Cambridge University Press:  27 March 2009

J. Bingham
J. Bingham
Affiliation:
The Plant Breeding Institute, Cambridge
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Extract

Elliott (1962) estimated that the average grain yield of wheat in the United Kingdom increased by 6·1 cwt per acre between 1947 and 1957. By considering results of yield trials carried out by the National Institute of Agricultural Botany he attributed 3·8 cwt of this increase to greater yielding ability of new varieties and the remainder to ‘other factors’, including the increased use of fertilizers, chemical weed control, better seed dressings and combine harvesters. The genetic improvement obtained by breeding new varieties is due partly to the incorporation of characters which are comparatively easily recognized, such as resistance to various diseases and lodging. However, even when these major limiting factors are absent from the environment the new varieties give higher yields, presumably due to physiological superiority. Many investigations, reviewed by Thome (1966), have sought to identify and establish the relative importance of the responsible physiological characters, but the information is still far from complete. This shortcoming is now the chief hindrance to more efficient choice of varieties for use as parents and selection of improved genotypes by the breeder. The objective of the three experiments reported here was to provide further information on the physiological basis of varietal differences in yield in wheat.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 68 , Issue 3 , June 1967 , pp. 411 - 422
Copyright
Copyright © Cambridge University Press 1967

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References

Barnkll, H. R. (1936). Seasonal changes in the carbohydrates of the wheat plant. New Phytol. 35, 229–66.CrossRefGoogle Scholar
Bingham, J. (1966a). Paternal effect on grain size in wheat. Nature, Lond. 209, 940–1.CrossRefGoogle Scholar
Bingham, J. (1966b). Varietal response in wheat to water supply in the field, and male sterility caused by a period of drought in a glasshouse experiment. Ann. appl. Biol. 57, 363–77.CrossRefGoogle Scholar
Bunting, A. H. & Drennan, D. S. H. (1966). Some aspects of the morphology and physiology of cereals in the vegetative phase. The Growth of Cereals and Grasses, pp. 20–38. London: Butterworths.Google Scholar
Drennan, D. S. H. & Krishnamurthy, K. (1964). Dry matter production by detached ears of wheat. Nature, Lond. 203, 1194–95.CrossRefGoogle Scholar
Elliott, C. S. (1962). The importance of variety testing in relation to crop production. J. natn. Inst. agric. Bot. 9, 199–206.Google Scholar
Engledow, F. L. & Wadham, S. M. (1923). Investigations on yield in the cereals. J. agric. Sci. Camb. 13, 390–439.CrossRefGoogle Scholar
Jenkins, H. V. (1959). An airflow for measuring the area of detached leaves. Pl. Physiol. 34, 532–6.CrossRefGoogle ScholarPubMed
Lupton, F. G. H. (1966). Translocation of photosynthetic assimilates in wheat. Ann. appl. Biol. 57, 355–64.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, 635–44.CrossRefGoogle Scholar
Ann. Rep. PL Breed. Inst. Cambridge 1963–4 (1965), p. 48.Google Scholar
Quinlan, J. D. & Sagar, G. R. (1962). An autoradiographic study of the movement of 14C-labelled assimilates in the developing wheat plant. Weed Res. 2, 264–73.CrossRefGoogle Scholar
Thorne, G. N. (1965). Photosynthesis of ears and flag leaves of wheat and barley. Ann. Bot. (NS) 29, 317–29.CrossRefGoogle Scholar
Thorne, G. N. (1966). Physiological aspects of grain yield in cereals. The Growth of Cereals and Grasses, pp. 88–105. London: Butterworths.Google Scholar
Tribe, H. T. (1961). Microbiology of cellulose decomposition in soil. Soil Sci. 92, 61–77.CrossRefGoogle Scholar
Stoy, V. (1963). The translocation of 14C-labelled photosynthetic products from the leaf to the ear in wheat. Physiologia Pl. 16, 851–66.CrossRefGoogle Scholar
Watson, D. J., Thorne, G. N. & French, S. A. W. (1963). Analysis of growth and yield of winter and spring wheats. Ann. Bot. (N.S.) 27, 1–22.Google Scholar