Sains Malaysiana 44(3)(2015): 347–354

Maternal Mowing Effect on Seed Traits of an Invasive Weed, Erigeron annuus in Farmland

(Kesan Memotong Maternal ke atas Ciri Biji bagi Rumpai Invasif, Erigeron annuus di Ladang Ternakan)

XIAO-HUI YONG, JIANG-HUA LIU, ZHEN LI, SHU-FENG DU, ZHUO-WEN ZHANG, XUE-FENG MENG, XIAO-JING WU & YONG-JIAN WANG*

College of Horticulture & Forestry Sciences, Huazhong Agricultural University,

Wuhan 430070, China

Diserahkan: 25 Februari 2014/Diterima: 30 September 2014

ABSTRACT

The effect of maternal mowing on seed traits of an invasive weed, Erigeron annuus, in farmland was discussed by comparing mowing plants with intact (no-mowing) plants. The maternal mowing effect resulted in the decrease of seed mass, achene size, pappus length and germination percentage and the increase of variation in achene size, pappus length, dispersal distance and germination non-uniformity. To some extent, the individuals suffered mowing might accelerate the environmental adaptation through the increase of these variations. Our study indicated the mean of mowing in farmland will restrain the growth and reproduction of weed E. annuus. However, it also increases the diversity of seeds through a more unequal provision to seeds that shares the risk and increases fitness to a wider range of heterogeneity of farmland condition.

Keywords: Achene size; Erigeron annuus; maternal mowing; seed traits

ABSTRAK

Kesan memotong maternal ke atas sifat biji bagi rumpai invasif, Erigeron annuus, di ladang ternakan telah dibincangkan dengan membandingkan tumbuhan yang dipotong dengan tumbuhan utuh (tidak dipotong). Kesan memotong maternal telah menyebabkan penurunan jisim biji, saiz aken, panjang papus, peratus percambahan serta peningkatan dalam variasi saiz aken, panjang papus, jarak penyebaran dan ketidak-seragaman percambahan. Sedikit sebanyak, individu yang mengalami kesan potongan mungkin cepat menyesuaikan diri dengan alam sekitar melalui peningkatan variasi ini. Kajian ini menunjukkan cara memotong di ladang ternakan akan menghalang pertumbuhan dan pembiakan rumpai E. annuus. Walau bagaimanapun, ia juga meningkatkan kepelbagaian biji melalui pembahagian tidak sama rata pada biji yang berkongsi risiko dan ia juga meningkatkan kecergasan julat untuk keheterogenan yang lebih luas dalam keadaan ladang ternakan.

Kata kunci: Erigeron annuus; memotong maternal; saiz aken; sifat biji

RUJUKAN

Baythavong, B.S. 2011. Linking the spatial scale of environmental variation and the evolution of phenotypic plasticity: Selection favors adaptive plasticity in fine grained environments. The American Naturalist 178: 75-87.

Beneke, K., van Rooyen, M.W., Theron. G.K. & van de Venter, H.A. 1993. Fruit polymorphism in ephemeral species of Naquamaland. IV. Growth analyses of plant cultivated from the dimorphic diaspores. Journal of Arid Environments 24: 345-360.

Buide, M.L. 2008. Disentangling the causes of intra-inflorescence variation in floral traits and fecundity in the hermaphrodite Silene acutifolia. American Journal of Botany 95: 490-497.

Buide, M.L. 2004. Intra-inflorescence variation in floral traits and reproductive success of the hermaphrodite Silene acutifolia. Annals of Botany 94: 441-448.

Case, A.L., Lacey, E.P. & Hopkins, R.G. 1996. Parental effects in Plantago lanceolata L. II. manipulation of grandparental temperature and parental flowering time. Heredity 76: 287- 295.

Cheplick, G.P. 1996a. Do seed germination patterns in cleistogamous annual reduce the risk of sibling competition? Journal of Ecology 84: 247-255.

Cheplick, G.P. 1996b. Cleistogamy and seed heteromorphism in Triplasis purpurea (Poaceae). Bulletin of the Torrey Botanical Club 123: 25-33.

Donohue, K. 1999. Seed dispersal as a maternally influenced character: Mechanistic basis of maternal effects and selection on maternal characters in an annual plant. The American Naturalist 154: 674-689.

Dorneles, M.C., Ranal, M.A. & Santana, D.G. 2005. Germinação de diásporos de Myracrodruon urundeuva Allemão (Anacardiaceae) ocorrente no cerrado do Brasil Central [Germination of newly collected diaspores of Myracrodruon urundeuva Allemão (Anacardiaceae) occurring in the cerrado of Central Brazil]. Revista Brasileira de Botânica 28: 399- 408. (In Finnish with English summary).

Ellison, A.M. 1987. Effect of seed dimorphism on the density dependent dynamics of experimental populations of Atriplex triangularis (Chenopodiaceae). American Journal of Botany 74: 1280-1288.

Fresnillo, B. & Ehlers, B.K. 2008. Variation in dispersability among mainland and island populations of three wind dispersed plant species. Plant Systematics and Evolution 270: 243-255.

Geber, M.A. & Griffen, L.R. 2003. Inheritance and natural selection on functional traits. International Journal of Plant Sciences 164: 21-42.

Gillespie, J.H. 1977. Natural selection for variances in offspring numbers, a new evolutionary principle. The American Naturalist 111: 1010-1014.

Grime, J.P. 1977. Evidence for the existence of three primary strategies in plants and its relevance to ecological and evolutionary theory. The American Naturalist 111: 1169- 1194.

Hale, A.N., Imfeld, S.M., Hart, C.E., Gribbins, K.M., Yoder, J.A. & Collie, M.H. 2010. Reduced seed germination after pappus removal in the North American dandelion (Taraxacum officinale; Asteraceae). Weed Science 58: 420-425.

Imbert, E., Escarré, J. & Lepart, J. 1997. Seed heteromorphism in Crepis sancta (Asteraceae), performance of two morphs in different environments. Oikos 79: 325-332.

Jacobs, B.S. & Lesmeister, S.A. 2012. Maternal environmental effects on fitness, fruit morphology and ballistic seed dispersal distance in an annual forb. Functional Ecology 26: 588-597.

Jason, B.W. & Michael, J.W. 2009. What are maternal effects (and what are they not)? Philosophical Transactions of the Royal Society of London Series B-Biological Sciences 364: 1107-1115.

Kaplan, R.H. & Cooper, W.S. 1984. The evolution of developmental plasticity in reproduction characteristics, an application of the ‘adaptive coin-flipping’ principle. The American Naturalist 123: 393-410.

Kotowski, F. 1926. Temperature relations to germination of vegetable seed. Proceedings of the American Society for Horticultural Science 23: 176-184.

Mazer, S. 1987. Parental effects on seed development and seed yield in Raphanus raphanistrum: Implications for natural and sexual selection. Evolution 41: 35-371.

Meyer, S.E. & Carlson, S.L. 2001. Achene mass variation in Ericameria nauseosus (Asteraceae) in relation to dispersal ability and seedling fitness. Functional Ecology 15: 274-281.

Mogie, M., Latham, J.R. & Warman, E.A. 1990. Genotype-independent aspects of seed ecology in Taraxacum. Oikos 59: 175-182.

Moles, A.T. & Westoby, M. 2006. Seed size and plant strategy across the whole life cycle. Oikos 113: 91-105.

Montesinos, D., Garcia-Fayos, P. & Mateu, I. 2006. Conflicting selective forces underlying seed dispersal in the endangered plant Silene diclinis. International Journal of Plant Sciences 167: 103-110.

Rai, J.P.N. & Tripathi, R.S. 1987. Germination and plant survival and growth of Galingosa parviflora Cav. as related to food and energy content of its ray- and disc-achenes. Acta Oecologica 8: 155-165.

Simard, M.J. & Benoit, D.L. 2011. Effect of repetitive mowing on common ragweed (Ambrosia Artemisiifolia L.) pollen and  seed production. Annals of Agricultural and Environmental Medicine 18: 55-62.

Soons, M.B. & Heil, G.W. 2002. Reduced colonization capacity in fragmented populations of wind-dispersed grassland forbs. Journal of Ecology 90: 1033-1043.

Stanton, M. 1984. Seed variation in wild radish: Effect of seed size on components of seedling and adult fitness. Ecology 65: 1105-1112.

Stanton, M. 1985. Seed size and emergence time within a stand of wild radish (Raphanus raphanistrum L.): The establishment of a fitness hierarchy. Oecologia 67: 524-531.

Stratton, D.A. 1989. Competition prolongs expression of maternal effects in seedlings of Erigeron annuus (Asteraceae). American Journal of Botany 76: 1646-1653.

Tavsanoglu, C. & Catav, S.S. 2012. Seed size explains within-population variability in post-fire germination of Cistus salviifolius. Annales Botanici Fennici 49: 331-340.

Venable, D.L., Burquez, A.M., Corral, G., Morales, E. & Espinosa, F. 1987. The ecology of seed heteromorphism in Heterosperma pinnatum in Central Mexico. Ecology 68: 65-76.

Verdú, M. & Traveset, A. 2005. Early emergence enhances plant fitness: A phylogenetically controlled meta-analysis. Ecology 86: 1385-1394.

Violle, C., Castro, H., Richarte, J. & Navas, M.L. 2009. Intraspecific seed trait variations and competition: Passive or adaptive response. Functional Ecology 23: 612-620.

Wang, Y.J., Shi, X.P. & Zhong, Z.C. 2013. The relative importance of sexual reproduction and clonal propagation in rhizomatous herb Iris japonica Thunb. from two habitats of Jinyun Mountain, Southwest China. Russian Journal of Ecology 44: 199-206.

Wang, Y.J., Shi, X.P., Peng, Y., Zhong, Z.C. & Tao, J.P. 2012. Effects of fine-scale pattern of dwarf bamboo on understory species diversity in Abies faxoniana forest, southwest China. Sains Malaysiana 41: 649-657.

Wang, Y.J., Tao, J.P. & Zhong, Z.C. 2009. Factors influencing the distribution and growth of dwarf bamboo, Fargesia nitida, in a subalpine forest in Wolong nature Reserve, southwest China. Ecological Research 24: 1013-1021.

Weiner, J., Martinez, S., Müller-Schärer, H., Stoll, P. & Schmid, B. 1997. How important are environmental maternal effects in plants? A study with Centaurea maculosa. Journal of Ecology 85: 133-142.

Westoby, M., Falster, D.S., Moles, A.T., Vesk, P.A. & Wright, I.J. 2002. Plant ecological strategies: Some leading dimensions of variation between species. Annual Review of Ecology and Systematics 33: 125-159.

Zhang, J. & Maun, M. 1990. Seed size variation and its effects on seedling growth in Agropyron psammophelum. Botanical Gazette 151: 106-113.

*Pengarang untuk surat-menyurat; email: wangyj@mail.hzau.edu.cn