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Assessment and selection of initial material for breeding perennial ryegrass (Lolium perenne L.)

Published online by Cambridge University Press:  27 March 2009

Manuel A. M. Do Valle Ribeiro
Manuel A. M. Do Valle Ribeiro
Affiliation:
An Foras Taluntais, Carlow, Ireland
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Summary

A breeding programme initiated at Oak Park, Carlow, in September 1965, in which perennial ryegrass plants, instead of being widely spaced as traditionally used in grassbreeding, were planted 9 x 9 in apart, is described. At this density, plants were individually distinguishable throughout three growing seasons yet gave a complete ground cover of herbage on which was imposed two contrasting systems of defoliation. Data on ear emergence, dry-matter yields, persistence and some quality components agreed with data obtained from swards by other workers.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 74 , Issue 3 , June 1970 , pp. 433 - 444
Copyright
Copyright © Cambridge University Press 1970

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References

REFERENCES

Ahlgren, H. L., Smith, D. C. & Nielsen, E. L. (1945). Behaviour of various selections of Kentucky bluegrass, Poa pratensis L., when grown as spaced plants and in mass seedings. J. Am Soc. Agron, 37, 268–81.CrossRefGoogle Scholar
Aldrich, D. T. A. (1963). Recent variety trials of herbage crops. J. natn. Inst. agric. Bot. 9, 384–92.Google Scholar
Aldrich, D. T. A. (1965). New and existing herbage varieties. J. natn. Inst. agric. Bot. 10, 293–98.Google Scholar
Anon. (1969). Recommended varieties of grasses. N I A B Farmers Leaf. no. 16 (1968–69), pp. 23.Google Scholar
Clouting, Grace M. & Hawkins, R. P. (1966). A technique for measuring the persistency of grass varieties. J. natn. Inst. agric. Bot. 10, 621–7.Google Scholar
Copeman, G. J. F. & Swift, G. (1966). The value of spaced plants in assessing the yield potential of herbage varieties at varying nitrogen levels. Proc. 10th int. Grassld Oongr. (1966), pp. 263–7.Google Scholar
Corkill, L. (1957). Pasture plant breeding in New Zealand. Agric. Rev., Lond. 3, 31–7.Google Scholar
Dent, J. W. & Aldrich, D. T. A. (1963). The inter-relationships between heading date, yield, chemical composition and digestibility in varieties of perennial ryegrass, timothy, cocksfoot and meadow fescue. J. natn. Inst. agric. Bot. 9, 261–81.Google Scholar
Dent, J. W. & Aldrich, D. T. A. (1968). Systematic testing of quality in grass varieties. 2. The effect of cutting dates, season and environment. J. Br. Grassld Soc. 23, 13–19.CrossRefGoogle Scholar
Donald, C. M. (1963). Competition among crop and pasture plants. Adv. Agron. 15, 1–118.CrossRefGoogle Scholar
England, F. J. W. (1961). Inter-cultivar polycrosses in perennial ryegrass and cocksfoot. Rep. Scott. Pl. Breed. Stn 1961, 52–63.Google Scholar
England, F. J. W. (1967). Non-sward densities for the assessment of yield in Italian ryegrass. I. Comparison between sward and non-sward densities. J. agric. Sci., Camb. 68, 235–41.CrossRefGoogle Scholar
Evans, P. S. (1964). A study of leaf strength in four ryegrass varieties. N.Z. Jl agric. Res. 7, 508–13.CrossRefGoogle Scholar
Fejer, S.O. (1955). Genotype-environment interactions in Lolium perenne. Nature, Lond. 175, p. 944.CrossRefGoogle Scholar
Fejer, S. O. (1959). Intraspecific competition as a factor in ryegrass breeding. N.Z. Jl agric. Res. 2, 107–23.CrossRefGoogle Scholar
Green, J. O. & Eyles, Jean C. (1960). A study in methods of grass variety testing. J. Br. Grassld Soc. 15, 124–32.CrossRefGoogle Scholar
Harkess, R. D. (1966). Tetraploid grasses. Scott. Agric. Winter 1966/67.Google Scholar
Hawkins, R. P. & Clouting, Grace M. (1965). The identification of varieties of perennial ryegrass, cocksfoot, timothy and meadow fescue. J. natn. Inst. agric. Bot. 10, 223–42.Google Scholar
Hayes, P. & Harrington, F. J. (1966). The facts about tetraploid Italian ryegrass. Agriculture North. Ire. 40, 335–6.Google Scholar
Henderson, I. C, Boyd, M., Jennings, J. W. & Linehan, P. A. (1960). Relative production of eultivars (varieties) of perennial ryegrass under simulated pasture conditions: Part II. Res. exp. Rec. Minist. Agric. Nth. Ire. 9, 85–95.Google Scholar
Jenkin, T. J. (1931). The method and technique of selection. Breeding and strain-building in grasses. Bull. imp. Bur. PI. Genet. Herb. no. 31, 5–34.Google Scholar
Kramer, H. H. (1947). Morphologic and agronomic variation in Poa pratensis. J. Am. Soc. Agron. 39, 181–91.CrossRefGoogle Scholar
Lazenby, A. (1957). The problem of assessing strains. A study in grassbreeding technique. J. agric. Sci., Camb. 48, 294–304.CrossRefGoogle Scholar
Lazenby, A. & Rogers, H. H. (1962). Selection criteria in grass breeding. I. J. agric. Sci., Camb. 59, 51–62.CrossRefGoogle Scholar
Lazenby, A. & Rogers, H. H. (1963a). Grass breeding in the United Kingdom. Herb. Abstr. 33, 73–80.Google Scholar
Lazenby, A. & Rogers, H. H. (1963b). Implications of variety and environment interactions in grasses. Ann. appl. Biol. 51, 618–19.Google Scholar
Lazenby, A. & Rogers, H. H. (1964). Selection criteria in grass breeding II. Effect, on Lolium perenne, of differences in population density, variety and available moisture. J. agric. Sci., Camb. 62, 285–98.CrossRefGoogle Scholar
Murphy, R. P. (1952). Comparison of different types of progeny in evaluating breeding behaviour. Proc. 6th Int. Grassld Congr. (1952), 320–6.Google Scholar
O'shea, J., Ribeiro, M. A. V. & Mohan, M. A. (1968). Relationships between digestibility (in vitro), crude fibre and cellulose content of some animal feeds. Ir. J. agric. Res. 7, 173–81.Google Scholar
Proujdfoot, K. G. (1957). A comparison of total dry-matter yields obtained in the first harvest year, from five strains of perennial ryegrass under single plant, pure sward, and clover sward conditions. Res. exp. Rec. Minist. Agric. Nth. Ire., 6, 19–30.Google Scholar
Proudfoot, K. G. (1958). A comparison of dry matter yields obtained from five strains of perennial ryegrass sown with and without clover. Part I. Yields in the second and third harvest years. Part II. Total production over the three year period. Res. exp. Rec. Minist. Agric. Nth. Ire. 7, 31–46.Google Scholar
Proudfoot, K. G. & Wright, C. E. (1958). An assessment of the relative values of three methods of determining the leanness of perennial ryegrass. Res. exp. Rec. Minist. Agric. Nth. Ire. 7, 27–30.Google Scholar
Ribeiro, M. A. V. & Wright, C. E. (1969). Unpublished data.Google Scholar
Rogers, H. H. & Lazenby, A. (1966). Selection criteria in the breeding of grasses. Proc. 10th Int. Grassld Congr. (1966), 630–3.Google Scholar
Scheijgrond, W. & Vos, H. (1960). Methods of appraisal of herbage species and varieties. Proc. 8th Int. Orasald Congr. (1960), 118–22.Google Scholar
Stapledon, R. G. (1931). Methods as applied to cocksfoot grass (Dactylis glomerata L.) and remarks as to technique in general. Bull. imp. Bur. PI. Genet. Herb. no. 3, 35–45.Google Scholar
Stapledon, R. G. & Davies, W. (1930). Experiments to test the yield and other properties of various species and strains of herbage plants under different methods of management. Bull. Welsh PI. Breed. Stn no. 10, Series H.Google Scholar
Steward, T. A., Brown, S. M. & Boyd, M. (1966). Relative production of six perennial ryegrass cultivars grown with and without clover plus artificial nitrogen and with clover only, under simulated pasture conditions. Rec. agric. Res. Minist. Agric. Nth. Ire. 15, 99–133.Google Scholar
Thomson, J. R. & Sutton, W. G. (1962). The appraisal of grass varieties by the study of spaced plants, 1950–58. J. Br. Grassld Soc. 17, 300–5.CrossRefGoogle Scholar
Walters, R. J. K. (1969). Personal communication.Google Scholar
Walters, R. J. K., ApGriffith, G., Hughes, R. & Jones, D. I. H. (1967). Some factors causing differences in digestibility of grasses measured by an in vitro method. J. Br. Orassld Soc. 22, 112–16.CrossRefGoogle Scholar
Weiss, M. G., Taylor, L. H. & Johnson, I. J. (1951). Correlation of breeding behaviour with clonal performance of orchard-grass plants. Agron. J. 43, 594–602.CrossRefGoogle Scholar
Wilsie, C. P. (1949). Evaluation of grass-legume associations, with emphasis on the yields of bromegrass varieties. Agron. J. 41, 412–20.CrossRefGoogle Scholar
Wit, F. (1958). Tetraploid Italian ryegrass (Lolium mtdtiflorum L.) Euphytica 7, 47–58.CrossRefGoogle Scholar
Wright, C. E. (1966). An assessment of the yield potential of some perennial ryegrass cultivar introductions. Rec. agric. Res. Minist. Agric. Nth. Ire. 15, 13–17.Google Scholar
Wright, C. E. (1969). Personal communication.Google Scholar
Wright, C. E. & Robinson, A. H. L. (1962). Spaced plant data collected (1957–1960) during a preliminary examination of 100 cultivars and ecotypes of Lolium perenne. Res. exp. Rec. Minist. Agric. Nth. Ire. 11, 9–36.Google Scholar