Evolutionary-thinking in agricultural weed management

New Phytologist

Volumn 184, Issue 4, 2009, Pages 783-793

  Neve, Paul ^a   Vila Aiub, Martin ^b   Roux, Fabrice ^c  

^a UNIVERSITY OF WARWICK   (United Kingdom)

^b UNIVERSIDAD DE BUENOS AIRES   (Argentina)

^c CNRS   (France)

Author keywords

Climate change; Evolutionary ecology; Herbicide resistance; Modelling; Weed science

Indexed keywords

ADAPTATION; AGRICULTURAL ECOSYSTEM; BIOLOGICAL INVASION; CLIMATE CHANGE; CULTIVATION; EVOLUTIONARY BIOLOGY; GENETIC VARIATION; GLOBAL CLIMATE; HERBICIDE; INTRAPOPULATION VARIATION; PESTICIDE RESISTANCE; POPULATION DYNAMICS; POPULATION MODELING; SELECTION; WEED CONTROL;

AGRICULTURE; ECOLOGY; ECOSYSTEM; EVOLUTION; GENETIC VARIABILITY; GENETICS; HERBICIDE RESISTANCE; HUMAN; METHODOLOGY; PLANT; POPULATION GENETICS; REVIEW;

AGRICULTURE; ECOLOGY; ECOSYSTEM; EVOLUTION; GENETIC VARIATION; GENETICS, POPULATION; HERBICIDE RESISTANCE; HUMANS; PLANTS;

EID: 70449375153     PISSN: 0028646X     EISSN: 14698137     Source Type: Journal    
DOI: 10.1111/j.1469-8137.2009.03034.x     Document Type: Review

References (138)

1. Ainsworth EA. 2008. Rice production in a changing climate: a meta-analysis of responses to elevated carbon dioxide and elevated ozone concentration. Global Change 14 : 1642 1650.
2. 2. New Phytologist 165 : 251 371.
3. Andersson DI. 2003. Persistence of antibiotic resistant bacteria. Current Opinion in Microbiology 6 : 452 456.
4. Arntz AM, Delucia EH, Jordan N. 2000. Fitness effects of a photosynthetic mutation across contrasting environments. Journal of Evolutionary Biology 13 : 792 803.
5. Ashley MV, Willson MF, Pergams ORW, O'Dowd DJ, Gende SM, Brown JS. 2003. Evolutionarily enlightened management. Biological Conservation 111 : 115 123.
6. Baker HG. 1965. Characteristics and modes of origins of weeds. In : Baker HG, Stebbins GL, eds. The genetics of colonizing species. New York, NY, USA : Academic Press, 147 168.
7. Baker HG. 1974. The evolution of weeds. Annual Review of Ecology and Systematics 5 : 1 24.
8. Ball DA, Miller SD. 1993. Cropping history, tillage and herbicide effects on weed flora composition in irrigated corn. Agronomy Journal 85 : 817 821.
9. Barberi P, Mazzoncini M. 2001. Changes in weed community composition as influenced by cover crop and management system in continuous corn. Weed Science 49 : 491 499.
10. Barrett SCH. 1983. Crop mimicry in weeds. Economic Botany 37 : 255 282.
11. Barrett SCH. 1988. Genetics and evolution of agricultural weeds. In : Altieri MA, Liebman M, eds. Weed management in agroecosystems: ecological approaches. Boca Raton, FL, USA : CRC Press, 57 76.
12. Barrett SCH, Richardson BJ. 1985. Genetic attributes of invading species. In : Groves RH, Burdon JJ, eds. Ecology of biological invasions: an Australian perspective. Canberra, Australia : Academy of Science, 21 33.
13. Barton NH, Keightley PD. 2002. Understanding quantitative genetic variation. Nature Reviews Genetics 3 : 11 21.
14. Beckie HJ, Kirkland KJ. 2003. Implication of reduced herbicide rates on resistance enrichment in wild oat (Avena fatua). Weed Technology 17 : 138 148.
15. Beckie HJ, Hall LM, Meers S, Laslo JJ, Stevenson SC. 2004. Management practices influencing herbicide resistance in wild oats. Weed Technology 18 : 853 859.
16. Booth BD, Swanton CJ. 2002. Assembly theory applied to weed communities. Weed Science 50 : 2 13.
17. Buhler DD. 1995. Influence of tillage systems on weed population dynamics and management in corn and soybean in the central USA. Crop Science 35 : 1247 1258.
18. Burnside OC. 1993. Weed science - the step child. Weed Technology 7 : 515 518.
19. Busi R, Powles SB. 2009. Evolution of glyphosate resistance in a Lolium rigidum population by glyphosate selection at sublethal doses. Heredity doi
20. Carroll SP, Hendry AP, Reznick DN, Fox CW. 2007. Evolution on ecological time-scales. Functional Ecology 21 : 387 393.
21. Cavers PB. 1985. Intractable weeds - intraspecific variation must be considered in formulating control measures. In : Proceedings of the 1985 British Crop Protection Conference - Weeds. The British Crop Protection Council : UK, 367 376.
22. Chapman H, Robson B, Pearson ML. 2004. Population genetic structure of a colonising, triploid weed, Hieracium lepidulum. Heredity 92 : 182 188.
23. Cleland EE, Chiarello NR, Loarie SR, Mooney HA, Field CB. 2006. Diverse responses of phenology to global changes in a grassland ecosystem. Proceedings of the National Academy of Sciences, USA 103 : 13740 13744.
24. Clements FE. 1916. Plant succession: an analysis of the development of vegetation. Washington, DC, USA : Carnegie Institute of Washington.
25. Clements DR, DiTomasso A, Jordan N, Booth BD, Cardina J, Doohan D, Mohler CL, Murphy SD, Swanton CJ. 2004. Adaptability of plants invading North American cropland. Agriculture, Ecosystems & Environment 104 : 379 398.
26. Cocker KM, Moss SR, Coleman JOD. 1999. Multiple mechanisms of resistance to fenoxaprop-P-ethyl in United Kingdom and other European populations of herbicide-resistant Alopecurus myosuroides (Black-grass). Pesticide Biochemistry & Physiology 65 : 169 180.
27. Connell JH. 1978. Diversity in tropical rain forests and coral reefs. Science 199 : 1302 1310.
28. Cousens R. 1999. Weed science doesn't have to be a contradiction in terms. In : Bishop AC, Boersma M, Barnes CD, eds. Proceedings of the Twelfth Australian Weeds Conference. Hobart, Australia : Tasmanian Weed Society, 364 371.
29. Cousens R, Mortimer AM. 1995. Dynamics of weed populations. Cambridge, UK : Cambridge University Press.
30. Coustau C, Chevillon C, Ffrench-Constant R. 2000. Resistance to xenobiotics and parasites: can we count the cost? Trends in Ecology & Evolution 15 : 378 383.
31. Dauer JT, Luschei EC, Mortensen DA. 2009. Effects of landscape composition on spread of an herbicide-resistance weed. Landscape Ecology 24 : 735 747.
32. Derksen DA, Lafond GP, Thomas AG, Loeppky HA, Swanton CJ. 1993. Impact of agronomic practices on weed communities: tillage systems. Weed Science 41 : 409 417.
33. Diggle AD, Neve PB, Smith FP. 2003. Herbicides used in combination reduce the probability of herbicide resistance in finite weed populations. Weed Research 43 : 371 382.
34. Drake JA. 1990. The mechanics of community assembly and succession. Journal of Theoretical Biology 147 : 213 233.
35. Dunbabin MT, Cocks PS. 1999. Ecotypic variation for seed dormancy contributes to the success of capeweed (Arctotheca calendula) in Western Australia. Australian Journal of Agricultural Research 50 : 1451 1458.
36. Elena SF, Lenski RE. 2003. Evolution experiments with microorganisms: the dynamics and genetic bases of adaptation. Nature Reviews Genetics 4 : 457 469.
37. Ellstrand NC, Schierenbeck KA. 2000. Hybridization as a stimulus for the evolution of invasiveness in plants. Proceedings of the National Academy of Sciences, USA 87 : 7043 7050.
38. Fernandez-Quintanilla C, Quadranti M, Kudsk P, Bàrberi P. 2008. Which future for weed science? Weed Research 48 : 297 301.
39. Franks SJ, Weis AE. 2007. Rapid evolution of flowering time by an annual plant in response to a climate fluctuation. Proceedings of the National Academy of Sciences, USA 104 : 1278 1282.
40. Franks SJ, Weis AE. 2008. A change in climate causes rapid evolution of multiple life-history traits and their interactions in an annual plant. Journal of Evolutionary Biology 21 : 1321 1334.
41. Fried G, Norton LR, Reboud X. 2008. Environmental and management factors determining weed species composition and diversity in France. Agriculture Ecosystems & Environment 128 : 68 76.
42. 2, ozone and global climate change. Agriculture Ecosystems & Environment 97 : 1 20.
43. Genton BJ, Shykoff JA, Giraud T. 2005. High genetic diversity in French invasive populations of common ragweed, Ambrosia artemisiifolia, as a result of multiple sources of introduction. Molecular Ecology 14 : 4275 4285.
44. Ghersa CM, León RJC. 1999. Successional changes in the agroecosystems of the rolling Pampas. In : Walker LR, ed. Ecosystems of the world. Ecosystems of disturbed ground. Amsterdam, the Netherlands : Elsevier, 487 502.
45. Gressel J. 2002. Molecular biology of weed control. London, UK : Taylor & Francis.
46. Gressel J, Bensinai G. 1985. Low intraspecific competitive fitness in a triazine-resistant, nearly nuclear-isogenic line of Brassica napus. Plant Science 38 : 29 32.
47. Grime JP. 2002. Plant strategies, vegetation processes, and ecosystem properties. Chichester, UK, John Wiley & Sons.
48. Hairston NG Jr., Ellner SP, Geber MA, Yoshida T, Fox JA. 2005. Rapid evolution and the convergence of ecological and evolutionary time. Ecology Letters 8 : 1114 1127.
49. Hald AB. 1999. The impact of changing the season in which cereals are sown on the diversity of the weed flora in rotational fields in Denmark. Journal of Applied Ecology 36 : 24 32.
50. Hamrick JL, Linhart YB, Mitton JB. 1979. Relationships between life history characteristics and electrophoretically detectable genetic variation in plants. Annual Review of Ecology and Systematics 10 : 173 200.
51. Harper JL. 1956. The evolution of weeds in relation to resistance to herbicides. In : Proceedings of the 1956 British weed control conference. The British Crop Protection Council : UK, 179 188.
52. Hawes C, Haughton AJ, Osborne JL, Roy DB, Clark SJ, Perry JN, Rothery P, Bohan DA, Brooks DR, Champion GT et al. 2003. Response of plants and invertebrate trophic groups to contrasting herbicide regimes in the Farm Scale Evaluations of genetically modified herbicide-tolerant crops. Philosophical Transactions of the Royal Society of London Series B - Biological Sciences 358 : 1899 1913. (Pubitemid 37399319)
53. Heap I. 2009. The international survey of herbicide resistant weeds. Available at: http://www.weedscience.com.
54. Heap I, LeBaron H. 2001. Introduction and overview of resistance. In : Powles SB, Shaner DL, eds. Herbicide resistance and world grains. Boca Raton, FL, USA : CRC Press, 1 22.
55. Hermisson J, Pennings PS. 2005. Soft sweeps: molecular population genetics of adaptation from standing genetic variation. Genetics 169 : 2335 2352.
56. Holst N, Rasmussen IA, Bastiaans L. 2007. Field weed population dynamics: a review of model approaches and applications. Weed Research 47 : 1 14.
57. Ianetta PPM, Begg G, Hawes C, Young M, Russell J, Squire GR. 2007. Variation in Capsella (shepherd's purse): an example on intraspecific functional diversity. Physiologia Plantarum 129 : 542 554.
58. Jacquemin B, Gasquez J, Reboud X. 2008. Modelling binary mixtures of herbicides in populations resistant to one of the components: evaluation for resistance management. Pest Management Science 65 : 113 121.
59. Jander G, Baerson SR, Hudak JA, Gonzalez KA, Gruys KJ, Last RL. 2003. Ethylmethanesulfonate saturation mutagenesis in Arabidopsis to determine frequency of herbicide resistance. Plant Physiology 131 : 139 146.
60. Jordan N. 1989. Predicted evolutionary response to selection for tolerance of Soybean (Glycine max) and intraspecific competition in a nonweed population of poorjoe (Diodia teres). Weed Science 37 : 451 457.
61. Jordan NR, Jannink JL. 1997. Assessing the practical importance of weed evolution: a research agenda. Weed Research 37 : 237 246.
62. Jordan N, Kelrick M, Brooks J, Kinerk W. 1999. Biorational management tactics to select against triazine-resistant Amaranthus hybridus: a field study. Journal of Applied Ecology 36 : 123 132.
63. Kassen R, Bell G. 1998. Experimental evolution in Chlamydomonas. IV. Selection in environments that vary through times at different scales. Heredity 80 : 732 741.
64. Kirchner F, Robert A, Colas B. 2006. Modelling the dynamics of introduced populations in the narrow-endemic Centaurea corymbosa: a demo-genetic integration. Journal of Applied Ecology 43 : 1011 1021.
65. Lande R. 1983. The response to selection on major and minor mutations affecting a metrical trait. Heredity 50 : 47 65.
66. Lande R, Arnold SJ. 1983. The measurement of selection on correlated characters. Evolution 37 : 1210 1226.
67. Le Corre V, Kremer A. 2003. Genetic variability at neutral markers, Quantitative Trait Loci and trait in a subdivided population under selection. Genetics 164 : 1205 1219.
68. Le Roux JJ, Wieczorek AM, Wright MG, Tran CT. 2007. Super-genotype: global monoclonality defies the odds of nature. PLoS One 2 : e590.
69. Leiss KA, Müller-Schärer H. 2001. Adaptation of Senecio vulgaris (Asteraceae) to ruderal and agricultural habitats. American Journal of Botany 88 : 1593 1599.
70. Lenormand T, Bourguet D, Guillemaud T, Raymond M. 1999. Tracking the evolution of insecticide resistance in the mosquito Culex pipiens. Nature 400 : 861 864. (Pubitemid 29406719)
71. Maxwell BD, Roush ML, Radosevich SR. 1990. Predicting the evolution and dynamics of herbicide resistance in weed populations. Weed Technology 4 : 2 13.
72. Mayr E. 1963. Animal species and evolution. Cambridge, MA, USA : Harvard University Press.
73. McCloskey WB, Holt JS. 1990. Triazine resistance in Senecio vulgaris parental and nearly isonuclear backcrossed biotypes is correlated with reduced productivity. Plant Physiology 92 : 954 962.
74. Menchari Y, Délye C, Le Corre V. 2007. Genetic variation and population structure in black-grass (Alopecurus myosuroides Huds.), a successful, herbicide resistant, annual grass weed of winter cereal fields. Molecular Ecology 16 : 3161 3172.
75. Menchari Y, Chauvel B, Darmency H, Délye C. 2008. Fitness costs associated with three mutant acetyl coenzyme A carboxylase alleles endowing herbicide resistance in black-grass Alopecurus myosuroides. Journal of Applied Ecology 45 : 939 947.
76. Merilä J, Crnokrak P. 2001. Comparison of genetic differentiation at marker loci and quantitative traits. Journal of Evolutionary Biology 14 : 892 903.
77. Michael PJ, Steadman KJ, Plummer JA. 2006. Climatic regulation of seed dormancy and emergence of diverse Malva parviflora populations from a Mediterranean-type environment. Seed Science Research 16 : 273 281.
78. Morgan PB, Mies TA, Bollero GA, Nelson RL, Long SP. 2006. Season-long elevation of ozone concentration to projected 2050 levels under fully open-air conditions substantially decreases the growth and production of soybean. New Phytologist 170 : 333 343.
79. Mortensen DA, Bastiaans L, Sattin M. 2000. The role of ecology in the development of weed management systems: an outlook. Weed Research 40 : 49 62.
80. Mortimer AM. 1997. Phenological adaptation in weeds - an evolutionary response to the use of herbicides? Pesticide Science 51 : 299 304.
81. Moss SR, Perryman SAM, Tatnell LV. 2007. Managing herbicide-resistant blackgrass (Alopecurus myosuroides): theory and practice. Weed Technology 21 : 300 309.
82. Naylor REL, Lutman PJ. 2002. What is a weed? In : Naylor REL, ed. Weed management handbook. 9th edn. Oxford, UK : Blackwell Publishing, 1 16.
83. Neve P. 2007. Challenges for herbicide resistance evolution and management: 50 years after Harper. Weed Research 47 : 365 369.
84. Neve P, Powles SB. 2005a. Recurrent selection with reduced herbicide rates results in the rapid evolution of herbicide resistance in Lolium rigidum. Theoretical and Applied Genetics 110 : 1154 1166. (Pubitemid 40607583)
85. Neve P, Powles SB. 2005b. High survival frequencies at low herbicide use rates in populations of Lolium rigidum result in rapid evolution of herbicide resistance. Heredity, 95 : 485 492.
86. Neve P, Diggle AD, Smith FP, Powles SB. 2003. Simulating evolution of glyphosate resistance in Lolium rigidum II: past, present and future glyphosate use in Australian cropping. Weed Research 43 : 418 427.
87. Neve P, Sadler J, Powles SB. 2004. Multiple resistance to selective herbicides in a glyphosate resistant Lolium rigidum population from the Western Australian wheatbelt. Weed Science 52 : 231 239.
88. Novak SJ, Mack RN. 1993. Genetic variation in Bromus tectorum (Poaceae): Comparison between native and introduced populations. Heredity 71 : 167 176.
89. Oerke EC. 2006. Crop losses to pests. Journal of Agricultural Science 144 : 31 43.
90. Orr HA. 1998. The population genetics of adaptation: the distribution of factors fixed during adaptive evolution. Evolution 52 : 935 949.
91. Orr HA, Betancourt AJ. 2001. Haldane's sieve and adaptation from standing genetic variation. Genetics 157 : 875 884.
92. Owen MDK. 2008. Weed species shifts in glyphosate-resistant crops. Pest Management Science 64 : 377 387.
93. Patterson DT. 1985. Comparative ecophysiology of weeds and crops. In : Duke SO, ed. Weed ecophysiology Volume 1. Reproduction and ecophysiology. Boca Raton, FL, USA : CRC Press, 101 130.
94. Pedersen BP, Neve P, Andreasen C, Powles SB. 2007. Ecological fitness of a glyphosate-resistant Lolium rigidum population: growth and seed production along a competition gradient. Basic and Applied Ecology 8 : 258 268.
95. Pimentel D, Lach L, Zuniga R, Morrison D. 2000. Environmental and economic costs of nonindigenous species in the United States. BioScience 50 : 53 65.
96. Plowman AB, Richards AJ, Tremayne MA. 1999. Environmental effects on the fitness of triazine-resistant and triazine-susceptible Brassica rapa and Chenopodium album in the absence of herbicide. New Phytologist 141 : 471 485.
97. Powles SB. 2008. Evolved glyphosate-resistant weeds around the world: lessons to be learnt. Pest Management Science 64 : 360 365.
98. Powles SB, Holtum JAM. 1994. Herbicide resistance in plants: biology and biochemistry. Boca Raton, FL, USA : CRC Press.
99. Powles SB, Shaner DL. 2001. Herbicide resistance and world grains. Boca Raton, FL, USA : CRC Press.
100. Preston C, Powles SB. 2002. Evolution of herbicide resistance in weeds: initial frequency of target-site based resistance to acetolactate synthase-inhibiting herbicides in Lolium rigidum. Heredity 88 : 8 13.
101. Ray PM, Alexander WE. 1966. Photoperiodic adaptation to latitude in Xanthium strumarium. American Journal of Botany 53 : 709 709.
102. Reboud X. 2002. Response of Chlamydomonas reinhardtii to herbicides: negative relationship between toxicity and water solubility across several herbicide families. Bulletin of Environmental Contamination and Toxicology 69 : 554 561.
103. Reboud X, Bell G. 1997. Experimental evolution in Chlamydomonas III. Evolution of specialist and generalist types in environments that vary in time and space. Heredity 78 : 507 514.
104. Reboud X, Majerus N, Gasquez J, Powles SB. 2007. Chlamydomonas reinhardtii as a model system for pro-active herbicide resistance evolution research. Biological Journal of the Linnean Society 91 : 257 266.
105. Reed DH, Frankham R. 2001. How closely related are molecular and quantitative measures of genetic variation? A meta-analysis. Evolution 55 : 1095 1103.
106. Roux F, Reboud X. 2005. Is the cost of herbicide resistance expressed in the breakdown in the relationships between characters? A cast study using synthetic auxin-resistant Arabidopsis thaliana mutants. Genetical Research 85 : 101 110.
107. Roux F, Gasquez J, Reboud X. 2004. The dominance of the herbicide resistance cost in several Arabidopsis thaliana mutant lines. Genetics 166 : 449 460.
108. Roux F, Camilleri C, Giancola S, Brunel D, Reboud X. 2005. Epistatic interactions among herbicide resistances in Arabidopsis thaliana: the fitness cost of multiresistance. Genetics 171 : 1277 1288. (Pubitemid 43234859)
109. Roux F, Giancola S, Durand S, Reboud X. 2006. Building an experimental cline with Arabidopsis thaliana to estimate herbicide fitness cost. Genetics 173 : 1023 1031.
110. Roux F, Paris M, Reboud X. 2008. Delaying weed adaptation to herbicide by environmental heterogeneity: a simulation approach. Pest Management Science 64 : 16 29.
111. Ruegg WT, Quadranti M, Zoschke A. 2007. Herbicide research and development: challenges and opportunities. Weed Research 47 : 271 275.
112. Ryan GF. 1970. Resistance of common groundsel to simazine and atrazine. Weed Science 18 : 614 616.
113. Sahli HF, Conner JK, Shaw FH, Howe S, Lale A. 2008. Adaptive differentiation of quantitative traits in the globally distributed weed, wild radish (Raphanus raphanistrum). Genetics 180 : 945 955.
114. Salzmann D, Handley RJ, Mueller-Scharer H. 2008. Functional significance of triazine-herbicide resistance in defence of Senecio vulgaris against a rust fungus. Basic and Applied Ecology 9 : 577 587.
115. Sherry RA, Zhou X, Gu S, Arnone JA III., Schimel DS, Verburg PS, Wallace LL, Luo Y. 2007. Divergence of reproductive phenology under climate warming. Proceedings of the National Academy of Sciences, USA 104 : 198 202.
116. 2 increases productivity and invasive species success in an arid ecosystem. Nature 408 : 79 82.
117. Sultan SE, Spencer HG. 2002. Metapopulation structure favours plasticity over local adaptation. American Naturalist 160 : 271 283.
118. Swanton CJ, Shrestha A, Roy RC, Call-Coelho BR, Knezevic SZ. 1999. Effect of tillage systems, N, and cover crop on the composition of weed flora. Weed Science 47 : 454 461.
119. Tabashnik BE, Gould F, Carriere Y. 2004. Delaying evolution of insect resistance to transgenic crops by decreasing dominance and heritability. Journal of Evolutionary Biology 17 : 904 912. (Pubitemid 38871344)
120. Tardif FJ, Powles SB. 1994. Herbicide multiple-resistance in a Lolium rigidum biotype is endowed by multiple mechanisms: isolation of a subset with resistant acetyl-CoA carboxylase. Physiologia Plantarum 91 : 488 494.
121. Thompson JN. 1998. Rapid evolution as an ecological process. Trends in Ecology & Evolution 13 : 329 332.
122. Van Acker RC. 2009. Weed biology serves practical weed management. Weed Research 49 : 1 5.
123. Van Valen L. 1973. A new evolutionary law. Evolutionary Theory 1 : 1 30.
124. Vila-Aiub MM, Neve P, Powles SB. 2005. Resistance cost of a cytochrome P450 herbicide metabolism mechanism but not an ACCase target site mutation in a multiple resistant Lolium rigidum population. New Phytologist 167 : 787 796.
125. Wang T, Su Y, Chen G. 2008. Population genetic variation and structure of the invasive weed Mikania micrantha in southern China: consequences of rapid range expansion. Journal of Heredity 99 : 22 33.
126. Warwick SI. 1986. Isozyme variation in proso millet (Panicum miliaceum L.). Journal of Heredity 78 : 210 212.
127. Warwick SI. 1987. Genetic variation in Canadian and European populations of the colonizing weed species, Apera spica-venti. New Phytologist 106 : 301 317.
128. Warwick SI. 1990. Allozyme and life history variation in five northwardly colonizing North American weed species. Plant Systematics and Evolution 169 : 41 54.
129. Warwick SI, Marriage PB. 1982. Geographical variation in populations of Chenopodium album resistant and susceptible to Atrazine II. Photoperiod and reciprocal transplant studies. Canadian Journal of Botany 60 : 494 504.
130. Warwick SI, Thompson BK, Black LD. 1984. Population variation in Sorghum halepense, Johnson grass, at the northern limit of its range. Canadian Journal of Botany 62 : 1781 1789.
131. Weaver SE, Dirks VA, Warwick SI. 1985. Variation and climatic adaptation in northern populations of Datura stramonium. Canadian Journal of Botany 63 : 1303 1308.
132. Weiner J. 1990. Asymmetric competition in plant-populations. Trends in Ecology & Evolution 5 : 360 364.
133. Weinig C, Schmitt J. 2004. Environmental effects on the expression of quantitative trait loci and implications for phenotypic evolution. BioScience 54 : 627 635.
134. Westra P, Wilson RG, Miller SD, Stahlman PW, Wicks GW, Chapman PL, Withrow J, Legg D, Alford C, Gaines TA. 2008. Weed population dynamics after six years under glyphosate- and conventional herbicide-based weed control strategies. Crop Science 48 : 1170 1177.
135. Wijngaarden PJ, van den Bosch F, Jeger MJ, Hoekstra RF. 2005. Adaptation to the cost of resistance: a model of compensation, recombination, and selection in a haploid organism. Proceedings of the Royal Society of London Series B - Biological Sciences 272 : 85 89.
136. Wilczek AM, Roe JL, Knapp MC, Cooper MD, Lopez-Gallego C, Martin LJ, Muir CD, Sim S, Walker A, Anderson J et al. 2009. Effects of genetic perturbation on seasonal life history plasticity. Science 323 : 930 934.
137. Willi Y, Hoffmann AA. 2008. Demographic factors and genetic variation influence population persistence under environmental change. Journal of Evolutionary Biology 22 : 124 133.
138. 4 weed in field-grown soybean. Global Change Biology 6 : 899 905.