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Production of root axes and leaf elongation in perennial ryegrass in relation to dryness of the upper soil layer

Published online by Cambridge University Press:  27 March 2009

A. Troughton
A. Troughton
Affiliation:
Welsh Plant Breeding Station, Aberystwyth
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Summary

During a period without rainfall the upper layers of the soil may become dry whilst the lower layers provide sufficient moisture for the plant to continue growing. In experimental conditions simulating such a soil environment, new main root axes ceased to be produced by plants of perennial ryegrass. Shoot growth and leaf elongation rate were little affected during the first 2 weeks of the treatment. The subsequent introduction of moisture round the base of the plant resulted in the rapid production of new root axes and increase in the leaf elongation rate. Although there was considerable intra-varietal genetic variation in the rate of development of new root axes and leaf elongation after wetting it is concluded that this would be of doubtful value as a selection criterion.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 95 , Issue 3 , December 1980 , pp. 533 - 538
Copyright
Copyright © Cambridge University Press 1980

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References

REFERENCES

Foard, D. E., Harker, A. H. & Fishman, T. N. (1965). Initiation of lateral root primordia without completion of mitosis and without cytokinesis in uniserate pericycle. American Journal of Botany 52, 580–590.CrossRefGoogle Scholar
Hackett, C. (1968). A study of the root system of barley. 1. Effects of nutrition on two varieties. New Phytologist 67, 288–299.Google Scholar
Jesko, T., Heinrichova, K. & Lukacovic, A. (1971). Increase in photosynthetic activity during the formation of the first node roots and first tiller in Sorghum saccharatum (L.) Moench. Photosynthetica 5, 233–240.Google Scholar
Jesko, T. & Troughton, A. (1978). Root tips removal in relation to net photosynthesis and growth in Lolium perenne L. Biologia (Bratislava) 33, 65–71.Google Scholar
Kaufman, P. B. (1959). Development of the shoot of Oryza sativa L. III. Early stages in the histogenesis of the stem and ontogeny of the adventitious root. Phytomorphology 9, 382–404.Google Scholar
Kawata, S. & Harada, J. (1975). On the development of the crown root primordia in rice plants. Proceedings of the Crop Science Society of Japan 44, 438–457.CrossRefGoogle Scholar
Lawlor, D. W. (1972). Growth and water use of Lolium perenne. II. Plant growth. Journal of Applied Ecology 9, 99–105.CrossRefGoogle Scholar
Ludlow, M. M. & Ng, T. T. (1977). Leaf elongation rates in Panicum maximum var. trichoglume following removal of water stress. Australian Journal of Plant Physiology 4, 263–272.Google Scholar
Maluwayo, J. W. M. (1978). Genetic variation in the root system of perennial ryegrass (Lolium perenne). Diploma thesis, University of Wales, Aberystwyth.Google Scholar
Olmsted, C. E. (1941). Growth and development in range grasses. I. Early development of Bouteloua curtipendula in relation to water supply. Botanical Gazette 102, 499–519.CrossRefGoogle Scholar
Percival, J. (1921). The Wheat Plant: a Monograph, 463 pp. London: Duckworth.Google Scholar
Troughton, A. (1977). Relationship between the root and shoot systems of grasses. In The Belowground Ecosystem: A Synthesis of Plant Associated Processes (ed. Marshall, J. K.). Range Science Department Science Series no. 26, pp. 39–51, Colorado State University, Fort Collins.Google Scholar
Troughton, A. (1978 a). The effect of the prevention of the production of additional root axes upon the growth of plants of Lolium perenne. Annals of Botany 42, 269–276.CrossRefGoogle Scholar
Troughton, A. (1978 b). The influence of reproductive development upon the root system of perennial ryegrass and some effects upon herbage production. Journal of Agricultural Science, Cambridge 91, 427–431.CrossRefGoogle Scholar