Hostname: page-component-cd9895bd7-hc48f Total loading time: 0 Render date: 2024-12-26T19:14:32.757Z Has data issue: false hasContentIssue false

Yield, leaf-area index and photosynthetic rate in some perennial ryegrass (Lolium perenne L.) selections

Published online by Cambridge University Press:  27 March 2009

Ian Rhodes
Affiliation:
Welsh Plant Breeding Station, Aberystwyth

Summary

Yield, critical LAI and apparent photosynthetic rate per unit leaf area were measured in four families selected from L. perenne S. 321. Differences in yield were attributable to differences in canopy structure producing differing critical LAI. The most productive family, which was 33% more productive than the base population, produced the largest critical LAI but had the lowest photosynthetic rate.

Type
Short Note
Copyright
Copyright © Cambridge University Press 1972

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Cooper, J. P. & Trickey, S. A. (1971). Variation in photosynthesis of the individual leaf. Rep. Welsh Pl. Breed. Stnfor 1970, pp. 910.Google Scholar
Cooper, J. P., Rhodes, I. & Sheehy, J. E. (1971). Canopy structure, light interception and potential production in forage grasses. Rep. Welsh Pl. Breed. Stn for 1970, pp. 5769.Google Scholar
de Jaqer, J. (1968). Carbon dioxide exchange and photosynthetio activity in forage grasses. Ph.D. thesis, University of Wales.Google Scholar
Rhodes, I. (1971). The relationship between productivity and some components of canopy structure in ryegrass (Lolium spp.). II. Yield, canopy structure and light interception. J. agric. Sci., Camb. 77, 283–92.CrossRefGoogle Scholar
Sheehy, J. E. (1970). Studies in light interception in herbage canopies. Ph.D. thesis, University of Wales.Google Scholar
Vanstone, F. H. (1968). The development of a system of instrumentation for recording crop environments. Rep. Welsh Pl. Breed. Stn for 1967, pp. 135–60.Google Scholar
Wilson, D. & Cooper, J. P. (1967). Assimilation of Lolium in relation to leaf mesophyll. Nature, Lond. 214, 989–92.CrossRefGoogle Scholar
Wilson, D.&Cooper, J. P. (1969). Effect of light intensity and CO2 on apparent photosynthesis and its relationship with leaf anatomy in genotypes of Lolium perenne L. New Phytol. 68, 627–44.CrossRefGoogle Scholar
Wilson, D. & Cooper, J. P. (1970). Effect of selection for mesophyll cell size on growth and assimilation in Lolium perenne L. New Phytol. 69, 233–45.Google Scholar
Wilson, D., Treharne, K. J., Eagles, C. F. & Jager, J. de (1969). A manometrio technique for determination of apparent photosynthesis of Lolium. J. exp. Bot. 20, 373–80.CrossRefGoogle Scholar