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Genetic analysis of root growth in wheat

Published online by Cambridge University Press:  27 March 2009

J. H. Monyo
Affiliation:
Nottingham University School of Agriculture' Sutton Bonington' Loughborough' Leics.
W. J. Whittington
Affiliation:
Nottingham University School of Agriculture' Sutton Bonington' Loughborough' Leics.

Summary

The growth characteristics of root systems were studied in the wheat varieties Chinese Spring' Hope and the chromosome substitution lines of Hope into Chinese Spring. The growth patterns varied considerably between the lines and this was due to the fact that the plants formed different numbers of tillers and grew for different periods of time. A correlation existed between the development of the shoot and root systems although some lines differed widely in their shoot root ratios. Differences between the lines in the early stages of growth were small and they reacted uniformly to different levels of phosphorus supply. The relation between shoot and root growth was also shown by the fact that the conclusions from genetical analyses were very similar. These showed that the method of control was largely additive in nature. It was concluded that variations in shoot and root characteristics were markedly influenced by single genes affecting the duration of the vegetative growth period as well as by polygenic systems.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1970

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References

REFERENCES

Cavalli, L. L. (1952). An analysis of linkage in quantitative inheritance. In Quantitative Inheritance, ed. E. C. R. Reeve and C. H. Waddington. London:H.M.S.O.Google Scholar
Fisher, R. A.Yates, F. (1963). Statistical Tables for Biological Agricultural and Medical Research ' 6th edn. Edinburgh: Oliver and Boyd.Google Scholar
Halloran, G. M.Boydell, C. W. (1967). Wheat chromosomes with genes for vernalization response. Can. J. Genet. Oytol. 9' 632–39.Google Scholar
Hayman, B. I. (1954). The theory and analysis of diallel crosses. Genetics 39' 789803.Google Scholar
Hayman, B. I. (1958). The separation of epistatic from additive and dominance variation in generation means. Heredity, Lond. 12' 371–90.Google Scholar
Hewitt, E. J. (1966). Sand and water culture methods used in the study of plant nutrition. C.A.B. Tech. Comm. 22 (2nd ed), 187246.Google Scholar
Jinks, J. L. (1954). The analysis of continuous variation in a diallel cross of Nicotiana rustica varieties. Genetics 39' 767–88.Google Scholar
Law, C. N. (1966 a). Biometrical analysis using chromosome substitution lines within a species. In Chromosome Manipulations and Plant Genetics' eds. R. Riley and K. R. Lewis. Edinburgh: Oliver and Boyd.Google Scholar
Law, C. N. (1966b). The location of genetic factors affecting a quantitative character in wheat. Genetics 53' 487–98.Google Scholar
Mather, K. (1949). Biometrical Genetics. London: Methuen and Co. Ltd.Google Scholar
May, L. H.Chapman, F. H.Aspinall, D. (1965).Quantitative studies of root development. I. The influence of nutrient concentration. Aust. J. biol. Sci. 17' 601–8.Google Scholar
Monyo, J. H. (1968). Genetic analysis of growth in wheat. Ph.D. thesis, University of Nottingham.Google Scholar
Riley, R. (1965). Cytogenetics and the evolution of wheat. In Essays on Crop Plant Evolution. Cambridge University Press.Google Scholar
Schxtobman, J. J.Goedewaagen, M. A. J. (1965). Methods for the Examination of Root Systems and Roots' pp. 86. Wageningen: Pudoc Centre for Agricultural Publications and Documentation.Google Scholar
Sears, E. R. (1953).: Nullisomic analysis in common wheat. Am. Nat. 87' 245–52.Google Scholar
Street, H. E. (1962) The physiology of roots. In Viewpoints in Biology I 149apos; eds. J. O. Carthy C. L. Duddington. London: Butterworths.Google Scholar
Troughton, A.Whittington, W. J. (1969). The significance of genetic variation in root systems. In Root Growth' 15th Easter School in Agricultural Science' ed. W. J. Whittington. London: Butterworth.Google Scholar
Weaver, J. E. (1926). Root Development in Field Crops. New York: McGraw-Hill.Google Scholar
Whitehouse, R. N. H.Thompson, J. B.Do Valle Ribeiro, M. A. M. (1958). Studies in the breeding of self pollinating cereals 2. The use of a diallel cross in yield prediction. Euphytica 7, 147–69.Google Scholar