Hostname: page-component-7dd5485656-zklqj Total loading time: 0 Render date: 2025-10-31T09:21:08.618Z Has data issue: false hasContentIssue false
  • English
  • Français

Germination behaviour of Italian ryegrass in flooding pampa rangelands

Published online by Cambridge University Press:  19 September 2008

Adriana M. Rodriguez ,
Elizabeth J. Jacobo  and
V. Alejandro Deregibus
Adriana M. Rodriguez*
Affiliation:
Cátedra de Forrajes, Facultad de Agronomía, Universidad de Buenos Aires, Av. San Martin 4453. (1475), Buenos Aires, Argentina
Elizabeth J. Jacobo
Affiliation:
Cátedra de Forrajes, Facultad de Agronomía, Universidad de Buenos Aires, Av. San Martin 4453. (1475), Buenos Aires, Argentina
V. Alejandro Deregibus
Affiliation:
Cátedra de Forrajes, Facultad de Agronomía, Universidad de Buenos Aires, Av. San Martin 4453. (1475), Buenos Aires, Argentina
*
* Fax: 541 01 5211384 E-mail: ezjacobo@mail.retina.ar
Get access Rights & Permissions [Opens in a new window]

Abstract

Lolium multiflorum Lam., a winter annual grass species originating from the Mediterranean region, has become widespread in native grasslands of the flooding pampa (Argentina). The dynamics of dormancy release of L. multiflorum seeds in simulated natural conditions was studied. Dormancy was overcome by exposing imbibed seeds to mild cool temperatures (15°C or below) for brief periods (pre-chilling). After-ripening progressively released dormancy, at a higher rate in seeds that remained under the canopy (30/20°C) than those that were dry-stored (20°C). Germination was promoted by red light only when the after-ripening requirement was partially fulfilled or after pre-chilling treatment. These results provide useful knowledge for designing grazing strategies aimed at obtaining well-developed ryegrass canopy of high forage quality during winter and spring.

Keywords

after-ripeninggerminationItalian ryegrass (Lolium multiflorum)lightpre-chillingtemperature

Information

Type
Ecology
Information
Seed Science Research , Volume 8 , Issue 4 , December 1998 , pp. 521 - 528
Copyright
Copyright © Cambridge University Press 1998

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.)

Article purchase

Temporarily unavailable

References

Baskin, C.C. and Baskin, J.M. (1988) Germination ecophysiology of herbaceous plant species in a temperate region. American Journal of Botany 75, 286–305.CrossRefGoogle Scholar
Baskin, J.M. and Baskin, C.C. (1971) Germination physiology of Phacelia dubia var. dubia in Tennessee glade. American Journal of Botany 58, 98–104.CrossRefGoogle Scholar
Baskin, J.M. and Baskin, C.C. (1972) Physiological ecology of germination of Viola rafinesquii. American Journal of Botany 59, 981–988.CrossRefGoogle Scholar
Baskin, J.M. and Baskin, C.C. (1978) Temperature requirement for after-ripening of seeds of a winter annual induced into secondary dormancy by low winter temperatures. Bulletin of the Torrey Botanical Club 105, 104–107.CrossRefGoogle Scholar
Baskin, J.M. and Baskin, C.C. (1979) Effect of relative humidity on after-ripening and viability in seeds of the winter annual Draba verna. Botanical Gazette 140, 284–287.CrossRefGoogle Scholar
Baskin, J.M. and Baskin, C.C. (1981) Seasonal changes in germination responses of buried Laminum amplexicaule seeds. Weed Research 21, 299–306.CrossRefGoogle Scholar
Baskin, J.M. and Baskin, C.C. (1986) Temperature requirement for after-ripening in seeds of nine winter annuals. Weed Research 26, 375–380.CrossRefGoogle Scholar
Bewley, J.D. and Black, M. (1982) Physiology and biochemistry of seeds in relation to germination. Viability, dormancy and environmental control. Springer-Verlag, Berlin.Google Scholar
Deregibus, V.A., Casal, J.J. and Simone, A.F. (1986) Efectos de pastoreos con altas cargas en pasturas invadidas con gramilla (Cynodon dactylon). Revista Argentina de Producción Animal 6, 689–694.Google Scholar
Deregibus, V.A., Casal, J., Jacobo, E., Gibson, D., Kaufmann, M. and Rodriguez, A. (1994) Evidence that heavy grazing may promote the germination of Lolium multiflorum seeds via phytochrome-mediated perception of high red/far-red ratios. Functional Biology 8, 536–542.CrossRefGoogle Scholar
Ellis, R., Hong, T. and Roberts, E. (1993) Procedure for safe removal of dormancy from rice seed. Seed Science and Technology 11, 77–112.Google Scholar
Fernandez Grecco, R., Mazzanti, A. and Echeverría, H. (1995) Efecto de la fertilización nitrogenada sobre el crecimiento del forraje de un pastizal de la Pampa Deprimida Bonaerense. Actas de la XIV Reunión Latinoamericana de Producción Animal 15, 182–185.Google Scholar
Gardner, W.H. (1986) Water content. pp 493–544in Klute, A. (Ed.) Methods of soil analysis, Part 1, Physical and mineralogical methods. 2nd edn.Madison, Wisconsin, USA, American Society of Agronomy Inc.Google Scholar
ISTA (1996) International rules for seed testing. Seed Science and Technology 24, Supplement.Google Scholar
Jacobo, E., Rodriguez, A. and Deregibus, V.A. (1995) Effect of nature and intensity of autumn grazing events on establishment of Italian ryegrass in humid temperate rangeland. Proceeding of the XVI International Grassland Congress 245–265.Google Scholar
Pemedasa, M.A. and Lovell, P.H. (1975) Factors controlling germination of some dune annuals. Journal of Ecology 63, 41–59.CrossRefGoogle Scholar
Popay, A.I. and Roberts, E.H. (1970) Ecology of Capsella bursa-pastoris (L.) Medik and Senecio vulgaris L. in relation to germination behaviour. Journal of Ecology 58, 103–122.CrossRefGoogle Scholar
Probert, R.J and Longley, P.L. (1989) Recalcitrant seed storage physiology in three aquatic grasses (Zizania palustris, Spartina anglica and Porteresia coarctata). Annals of Botany 63, 53–63.CrossRefGoogle Scholar
Roberts, E.H. (1962) Dormancy in rice seeds. III. The influence of temperature, moisture and gaseous environment. Journal of Experimental Botany 13, 75–94.CrossRefGoogle Scholar
Roberts, E.H. (1965) Dormancy in rice seeds. IV. Varietal responses to storage and germination temperatures. Journal of Experimental Botany 16, 341–349.CrossRefGoogle Scholar
Roberts, E.H. and Smith, R. (1977) Dormancy and the pentose phosphate pathway in Khan, A.A. (Ed.) The physiology and biochemistry of seed dormancy and germination. Amsterdam, North Holland Publishing.Google Scholar
Rodriguez, A., Jacobo, E. and Deregibus, V.A. (1995). Efecto de la metodología de pastoreo sobre la condición y el valor zootecnico de un pastizal de la Pampa Deprimida. Actas de la XIV Reunión Latinoamericana de Producción Animal 15, 74–77.Google Scholar
Sala, O., Deregibus, V.A., Schlichter, T. and Alippe, H. (1981) Productivity dynamics of a native temperate grassland in Argentina. Journal of Range Management 34, 48–51.CrossRefGoogle Scholar
Smith, H. (1975) Phytochrome and photomorphogenesis. London, McGraw-Hill.Google Scholar
Soriano, A., Leon, R.J.C., Sala, O., Lavado, R., Deregibus, V.A., Cahuepé, M., Scaglia, O., Velázquez, C. and Lemcoff, J. (1991) Rio de la Plata grasslands. in Coupland, R.T. (Ed.) Ecosystems of the world. Amsterdam, Elsevier.Google Scholar
Stoyanova, S. and Kostov, K. (1983) Effect of seed storage temperature on the post harvest dormancy period of Dactylis glomerata L. Rasteniev” dni Nauki 20, 94–100.Google Scholar
Stoyanova, S., Kostov, K. and Angelova, A. (1984) Effect of seed storage temperature on the post harvest dormancy period of Festuca arundinacea Schred Plant Science (Sofia) 21, 99–108.Google Scholar
Thompson, P.A. (1970) Changes in germination responses of Silene secundiflora in relation to the climate of its habitat. Physiologia Plantarum 23, 739–746.CrossRefGoogle Scholar
Totterdell, S. and Roberts, E.H. (1979) Effects of low temperature in the loss of innate dormancy and the development of induced dormancy in seeds of Rumex obtusifolius and Rumex crispus L. Plant, Cell and Environmen 2, 131–137.CrossRefGoogle Scholar
Vincent, E.M. and Roberts, E.H. (1979) The influence of chilling, light and nitrate on the germination of dormant seeds of common weed species. Seed Science and Technology 7, 3–14.Google Scholar