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Intrapopulation variation in Abutilon theophrasti seed mass and its relationship to seed germinability

Published online by Cambridge University Press:  22 February 2007

Hameed A. Baloch ,
Antonio Di Tommaso  and
Alan K. Watson
Hameed A. Baloch
Affiliation:
Department of Plant Science, Macdonald Campus of McGill University, Ste-Anne-de-Bellevue, Québec, CanadaH9X 3V9
Antonio Di Tommaso*
Affiliation:
Department of Plant Science, Macdonald Campus of McGill University, Ste-Anne-de-Bellevue, Québec, CanadaH9X 3V9
Alan K. Watson
Affiliation:
Department of Plant Science, Macdonald Campus of McGill University, Ste-Anne-de-Bellevue, Québec, CanadaH9X 3V9
*
*Correspondence Tel: 607-254-4702 Fax: 607-255-8615 Email: ad97@cornell.edu
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Abstract

The relationship between seed mass variation and germinability in ten Abutilon theophrasti Medic. plants from a single agricultural population was examined under controlled environmental conditions. Seeds were collected in the autumn of 1995 and dry-stored in paper bags at 4°C until the start of trials in the spring of 1998. For each plant, between 549 and 1000 randomly selected seeds were separated into seven mass fractions based on individual seed mass, with classes ranging from <6.0 to >11.0mg. Subjecting the seeds to a cold stratification (4°C) period for 7d followed by a 21-d alternating day/night (25/14°C) temperature and 14-h photoperiod regime, resulted in 75% overall germination, 24% dormancy and 1% non-viable seeds. The majority of the seeds germinated within 7d of being exposed to the alternating temperature/light regimes. There was a significant (P < 0.001) difference in mean seed mass between the ten plants, with mean mass ranging from 8.8 to 9.6mg. For nine of the ten plants, the greatest proportion of seeds occurred in the 9.0–9.9mg mass fraction, while the lowest proportion of seeds was generally found within the 6.0–6.9mg mass fraction. Most seeds (96%) having a mass below 6.0mg were non-viable and, of the viable seeds, none germinated. There was a significant (P < 0.0001) relationship between seed mass and total germination, but not rate of germination. Germination peaked for seed mass fractions comprising the greatest proportion of total seeds (8.0–9.9mg) and was lowest for seeds with high or low mass. There was a weak trend of lower germinability for heavier seeds (>10.0mg) compared with lighter seeds. Maternal source had a significant effect (P < 0.05) on total germination and germination rate. Findings from this study suggest that intrapopulation variation in Abutilon theophrasti seed mass and its influence on germinability of seeds may play a significant role in maintaining a variable germination pattern and persistent seed bank in this troublesome annual agricultural weed

Keywords

Abutilon theophrastiintrapopulation variationseed bankseed dormancyseed germinationseed massvelvetleaf
Type
Research Article
Information
Seed Science Research , Volume 11 , Issue 4 , December 2001 , pp. 335 - 343
Copyright
Copyright © Cambridge University Press 2001

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References

Allen, P.S. and Meyer, S.E. (1998) Ecological aspects of seed dormancy loss. Seed Science Research 8, 183–191.CrossRefGoogle Scholar
Andersson, L. and Milberg, P. (1998) Variation in seed dormancy among mother plants, populations and years of seed collection. Seed Science Research 8, 29–38.CrossRefGoogle Scholar
Baloch, H.A. (2001) Effects of seed size and a fungal pathogen, Colletotrichum coccodes, on population dynamics of velvetleaf (Abutilon theophrasti Medic.). PhD Thesis, McGill University, Montreal, Canada.Google Scholar
Baskin, J.M. and Baskin, C.C. (1989) Physiology of dormancy and germination in relation to seed bank ecology. pp. 53–66in Leck, M.A.; Parker, V.T.; Simpson, R.L. (Eds) Ecology of soil seed bank. New York, Academic Press.CrossRefGoogle Scholar
Bello, I.A., Owen, M.D.K. and Hatterman-Valenti, H.M. (1995) Effect of shade on velvetleaf (Abutilon theophrasti) growth, seed production, and dormancy. Weed Technology 9, 452–455.CrossRefGoogle Scholar
Cardina, J. and Sparrow, D.H. (1997) Temporal changes in velvetleaf (Abutilon theophrasti) seed dormancy. Weed Science 45, 61–66.CrossRefGoogle Scholar
Cohen, D. (1966) Optimizing reproduction in a randomly varying environment. Journal of Theoretical Biology 12, 119–129.CrossRefGoogle Scholar
Dekker, J., Dekker, B., Hilhorst, H. and Karssen, C. (1996) Weedy adaptation in Setaria spp. IV. Changes in the germinative capacity of S. faberii (Poaceae) embryos with development from anthesis to after abscission. American Journal of Botany 83, 979–991.CrossRefGoogle Scholar
Dutilleul, P. (1998) Incorporating scale in study design and data analysis. pp.387–425 in Peterson, D.L.; Parker, V.T. (Eds) Ecological scale: Theory and applications. New York, Columbia University Press.Google Scholar
Evans, A.S. and Cabin, R.J. (1995) Can dormancy affect the evolution of post-germination traits? The case of Lesquerella fendleri. Ecology 76, 344–356.CrossRefGoogle Scholar
Fenner, M. (1985) Seed ecology. London, Chapman & Hall.CrossRefGoogle Scholar
Fenner, M. (1991) The effects of the parent environment on seed germinability. Seed Science Research 1, 75–84.CrossRefGoogle Scholar
Forsyth, C. and Brown, N.A.C. (1982) Germination of the dimorphic fruits of Bidens pilosa L. New Phytologist 90, 151–164.CrossRefGoogle Scholar
Gutterman, Y. (1992) Maternal effects on seeds during development. pp. 27–59in Fenner, M. (Ed.) Seeds: The ecology of regeneration in plant communities. Wallingford, UK, CAB International.Google Scholar
Harper, J.L. (1977) Population biology of plants. London, Academic Press.Google Scholar
Harper, J.L. and Obeid, M. (1967) Influence of seed size and depth of sowing on the establishment and growth of varieties of fiber and oil seed flax. Crop Science 7, 527–532.CrossRefGoogle Scholar
Janzen, D.H. (1977) Variation in seed size within a crop of Costa Rican Micuna andreana (Leguminosae). American Journal of Botany 64, 347–349.CrossRefGoogle Scholar
Kane, M. and Cavers, P.B. (1992) Patterns of seed weight distribution and germination with time in a weedy biotype of proso millet (Panicum miliaceum). Canadian Journal of Botany 70, 562–567.CrossRefGoogle Scholar
Kidson, R. and Westoby, M. (2000) Seed mass and seedling dimensions in relation to seedling establishment. Oecologia 125, 11–17.CrossRefGoogle ScholarPubMed
Lacey, E.P., Smith, S. and Case, A.L. (1997) Parental effects on seed mass: Seed coat but not embryo/endosperm effects. American Journal of Botany 84, 1617–1620.CrossRefGoogle Scholar
Lacroix, L.J. and Staniforth, D.W. (1964) Seed dormancy in velvetleaf. Weeds 12, 171–174.CrossRefGoogle Scholar
Li, X., Baskin, J.M. and Baskin, C.C. (1999) Seed morphology and physical dormancy of several North American Rhus species (Anacardiaceae). Seed Science Research 9, 247–258.CrossRefGoogle Scholar
Meyer, S.E., Kitchen, S.G. and Carlson, S.L. (1995) Seed germination timing patterns in intermountain Penstemon (Scrophulariaceae). American Journal of Botany 82, 377–389.CrossRefGoogle Scholar
Milberg, P. and Lamont, B.B. (1997) Seed/cotyledon size and nutrient content play a major role in early performance of species on nutrient-poor soils. New Phytologist 137, 665–672.CrossRefGoogle Scholar
Milberg, P., Andersson, L., Elfverson, C. and Regnér, S. (1996) Germination characteristics of seeds differing in mass. Seed Science Research 6, 191–197.CrossRefGoogle Scholar
Mitich, L.W. (1991) Intriguing world of weeds. 33. Velvetleaf. Weed Technology 5, 253–255.CrossRefGoogle Scholar
Moles, A.T., Hodson, D.W. and Webb, C.J. (2000) Seed size and shape and persistence in the soil in the New Zealand flora. Oikos 89, 541–545.CrossRefGoogle Scholar
Obeso, J.R. (1993) Seed mass variation in the perennial herb Asphodelus albus: sources of variation and position effect. Oecologia 93, 571–575.CrossRefGoogle ScholarPubMed
Pitelka, L.F., Thayer, M.E. and Hansen, S.B. (1983) Variation in achene weight in Aster acuminatus. Canadian Journal of Botany 61, 1415–1420.CrossRefGoogle Scholar
Roach, D.A. and Wulff, R.D. (1987) Maternal effects in plants. Annual Review of Ecology and Systematics 18, 209–235.CrossRefGoogle Scholar
Schütz, W. and Milberg, P. (1997) Seed dormancy in Carex canescens: regional differences and ecological consequences. Oikos 78, 420–428.CrossRefGoogle Scholar
Stamp, N.E. (1990) Production and effect of seed size in a grassland annual (Erodium brachycarpum, Geraniaceae). American Journal of Botany 77, 874–882.CrossRefGoogle Scholar
Thompson, J.N. (1984) Variation among individual seed masses in Lomatium grayi (Umbelliferae) under controlled conditions: magnitude and partitioning of the variance. Ecology 65, 626–631.CrossRefGoogle Scholar
Vaughton, G. and Ramsey, M. (1998) Sources and consequences of seed mass variation in Banksia marginata (Proteaceae). Journal of Ecology 86, 563–573.CrossRefGoogle Scholar
Venable, D.L. (1992) Size-number trade-offs and the variation in seed size with plant resource status. The American Naturalist 140, 287–304.CrossRefGoogle Scholar
Warwick, S.I. and Black, L.D. (1988) The biology of Canadian weeds. 90. Abutilon theophrasti. Canadian Journal of Plant Science 68, 1069–1085.CrossRefGoogle Scholar
Westoby, M., Jurado, E. and Leishman, M. (1992) Comparative evolutionary ecology of seed size. Trends in Ecology and Evolution 7, 368–372.CrossRefGoogle ScholarPubMed
Wright, K.J., Seavers, G.P., Peters, N.C.B. and Marshall, M.A. (1999) Influence of soil moisture on the competitive ability and seed dormancy of Sinapis arvensis in spring wheat. Weed Research 39, 309–317.CrossRefGoogle Scholar
Zammit, C. and Zedler, P.H. (1990) Seed yield, seed size and germination behavior in the annual Pogogyne abramsii. Oecologia 84, 24–28.CrossRefGoogle ScholarPubMed
Zanin, G., Berti, A. and Sattin, M. (1989) Mais (Zea mays L.) Abutilon theophrasti Medicus: effetto della durata e del periodo di competizione. Rivista di Agronomia 23, 185–192.Google Scholar
Zhang, J. (1993) Seed dimorphism in relation to germination and growth of Cakile edentula. Canadian Journal of Botany 71, 1231–1235.CrossRefGoogle Scholar
Zhang, J. and Hamill, A.S. (1996) Responses of Abutilon theophrasti to agricultural management systems. Weed Research 36, 471–481.CrossRefGoogle Scholar
Zhang, J. and Hamill, A.S. (1997) Seed weight, intraspecific competition, and plant performance in Abutilon theophrasti. Canadian Journal of Botany 75, 1614–1620.CrossRefGoogle Scholar