The effect of seed weight and coleoptile tiller development on seedling vigour in tall fescue, Festuca arundinaceaS chreb. Article DOI:
Cite this article as: Lewis, E.J. & Garcia, J.A. Euphytica (1979) 28: 393. doi:10.1007/BF00056597 Summary
Two characters, previously shown to influence the rate of seedling growth in tall fescue, were studied in detail in three distinct populations as part of a programme to improve seedling vigour in the species. The effect of seed weight was found to be confined to the very early stages of growth and was apparent in seedling dry matter yield but not in tiller number. The development of a tiller in the axil of the coleoptile, which varied significantly between populations, had a far greater and more permanent effect both in terms of dry matter yield and tiller number. The increase in tiller number attributable to the coleoptile tiller and its derivatives increased geometrically in step with the total tiller number, so that the intitial difference of 28% in the first harvest remained practically unchanged in the subsequent three harvests. Similarly, the percentage difference in dry matter yield between plants with and without a coleoptile tiller remained more or less constant at about 22% from the second harvest onwards.
It is concluded that the development of a coleoptile tiller may prove to be a useful selection criterion in the breeding of this species.
Index words Festuca arundinacea tall fescue seed weight coleoptile tiller seedling vigour selection criterion References
, J. N. 1956. The influence of seed size and depth of sowing on pre-emergence and early vegetative growth of subterranean clover (
L.). Australian Journal of Agricultural Research 7: 98–109.
, J. N. 1957. Seed size as a factor in the growth of subterranean clover (
L.) under spaced and sward conditions. Australian Journal of Agricultural Research 8: 335–351.
, A. H. 1961. Differential survival of cultivars of
. Journal of the British Grassland Society 16: 69–75.
, B. R. & R. R. K
1960a. Inheritance of seed weight and associated traits in bromegrass,
. Canadian Journal of Plant Science 40: 353–365.
, B. R. & R. R. K
1960b. Recurrent selection for seed weight in bromegrass.
. Agronomy Journal 52: 575–578.
avies, W., 1927. Seed mixture problems. Soil germination, seedling andplant establishment with particular teference to the effects of environmental and agronomic factors. Bulletin. Welsh Plant Breeding Station, University College of Wales Ser. H, No. 6: 39–60.
avies, W. E., B. F. T yler, M. B orrill, J. P. C ooper, H. T homas & E. L. B reese, 1973. Plant Introduction at the Welsh Plant Breeding Station. Report of the Welsh Plant Breeding Station for 1972, pp. 143–162.
arcia, J. A., 1975. Studies on the improvement of seedling vigour in tall fescue ( Festuca arundinacea
Schreb.). M.Sc. thesis, University of Wales.
, I. V. 1954. Seed establishment in the West of Scotland. Journal of the British Grassland Society 9: 85–89.
, I. V. 1956. Comparative productivity of 27 strains of grass in the West of Scotland. Part 1. Total production for three years. Journal of the British Grassland Society. 11: 49–55.
ones, LI. I. & A. H. C harles, 1961. Observations on S. 170 tall fescue. Report of the Welsh Plant Breeding Station for 1960, p. 55.
, R. R., R. A.
, & D. S. M
1959. Cultural factors in seedling vigor of smoo bromegrass and other forage species. Iowa State Journal of Science 34: 48–53, 74–77, 78–80.
, W. R. & C. L. C
1955. The relationship of seed size and seedling vigour in some native grass species. Agronomy Journal 47: 472–477.
, R. H. M., S. M. R
& D. R. J
1964. The changing plant and tiller populations of timoth and meadow fescue swards. I. Plant survival and the pattern of tillering. Journal of Applied Ecology 1: 197–208.
ewis, E. J., 1966. The production and manipulation of new breeding material in Lolium-Festuca. Proceedings of the 10th International Grassland Congress: 688–693.
ewis, E. J., B. F. T yler & K. H. C horlton, 1973. Development of Lolium-Festuca hybrids. Report of the Welsh Plant Breeding Station for 1972, p. 34.
N.I.A.B., 1977. Recommended varieties of grasses 1977/78. Farmers Leaflet No. 16. National Institute of Agricultural Botany. Cambridge, p. 22.
, A. S. & J. P. C
1961. The influence of seasonal changes in light energy on leaf and tiller development in ryegrass, timothy and meadow fescue. Journal of the British Grassland Society 16: 299–308.
, L. R. & H. L. T
1963. Combining ability for seedling vigour in
. Crop Science 3: 358–359.
, G. A. 1954. seed size and seedling vigour in crested wheatgrass. Agronomy Journal 46: 216–220.
, W. E. 1960. Early seedling vigour and seed weight in relation to breeding in smooth bromegrass,
. Canadian Journal of Plant Science 40: 268–280.
, C. R., I. T. C
1971. Improvement of seedling vigor of smooth bromegrass (
) by recurrent selection for high seed weight. Crop Science 11: 225–228.
Google Scholar Copyright information
© H. Veenman En Zonen B.V 1979