Abstract
Species/variety mixtures of Salix are used as a disease control strategy for rust (Melampsora epitea Thum. var. epitea) in short rotation coppice (SRC). Six LET (larici-epitea typica) pathotypes and two LR (larici-retusae) pathotypes of M. epitea var. epitea and also M. caprearum were detected in Northern Ireland plantations in 1994 and 1995. Three of these, LET7, LET8 and NI5 were detected in plantations for the first time. The predominant pathotype on most varieties was LET1. Logistic analysis showed that this pathotype was less prevalent on Salix X dasyclados Wimm. and more prevalent on S. viminalis L. 'Bowles Hybrid' than on S. viminalis '683'. The Shannon-Weaver Index of diversity indicated that there was greater pathotype diversity in mixtures than on the constituent varieties in monoculture. There was also a general trend of increasing diversity as the season progressed. The lowest pathotype diversity was recorded on S. viminalis 'Bowles Hybrid'. Pathotype predominance and diversity have an impact on the sustainability of the crop.
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Dawson WM and McCracken AR (1998) Clonal selection in willow (Salix) grown as short rotation coppice for energy production. Tests of Agrochemicals and Cultivars No. 19. Annals of Applied Biology 132: 56-57
Finckh MR and Mundt CC (1992) Stripe rust, yield and plant competition in wheat cultivar mixtures. Phytopathology 82: 905-913
Fowler J and Cohen L (1993) Practical Statistics for Field Biologists. John Wiley & Sons, Chichester, England, pp 227
Groth JV (1976) Multilines and 'super-races: a simple model'. Phytopathology 66: 937-939
Gullberg U and Ryttman H (1993) Genetics of field resistance to Melampsora in Salix viminalis. European Journal of Forest Pathology 23: 75-84
Huang R, Kranz J and Welz HG (1994) Selection of pathotypes of Erysiphe graminis f.sp. hordei in pure and mixed stands of spring barley. Plant Pathology 43: 458-470
Hunter T, Royle DJ and Arnold GM (1996) Variation in the occurrence of rust (Melampsora spp.) and other diseases and pests, in short-rotation coppice plantations of Salix in the British Isles. Annals of Biology 129: 1-12
McCracken AR and Dawson WM (1992) Clonal response in Salix to Melampsora rusts in short rotation coppice plantations. European Journal of Forest Pathology 22: 19-28
McCracken AR and Dawson WM (1997) Using mixtures of willow clones as a means of controlling rust disease. In: Bullard MJ, Ellis RG, Heath MC, Knight JD, Lainsbury MA and Parker SR (eds) Aspects of Biology 49, 'Biomass and Energy Crops' (pp 97-103) Association of Applied Biology, London
McCracken AR and Dawson WM (1998a) Short rotation coppice willow in Northern Ireland since 1973: development of the use of mixtures in the control of foliar rust (Melampsora spp.). European Journal of Forest Pathology 27: 1-10
McCracken AR and Dawson WM (1998b) The benefits of growing mixtures of willow clones to give disease reduction and increased yield. In: Kopetz H, Weber T, Palz W, Chartier P and Ferrero GL (eds) Proceedings of 10th European Conference and Technology Exhibition 'Biomass for Energy and Industry', Wurzburg, Germany, June 1998 (pp 796-801) C.A.R.M.E.N., Rimpar, Germany
McCracken AR, Dawson WM and Allen CYA (1996) Clonal mixtures of Salix-a control measure for rust. In: Bioenergy' 96: Partnerships to Develop and Apply Biomass Technologies. Proceedings of the 7th National Conference, 15-20 September 1996 (pp 530-537) The Opryland Hotel, Nashville, Tennessee, USA
Parker SR, Pei MH, Royle DJ, Hunter T and Whelan MJ (1995) Epidemiology, population dynamics and management of rust diseases in willow energy plantations Energy Technology Support Unit, Contract Research Report No. B/W6/00214/REP. Dept. Trade and Industry, London, pp 82
Pei MH, Hunter T and Royle DJ (1992) Variation of Melampsora rusts occurring in biomass willows in the United Kingdom. In: Dawson WM and McCracken AR (eds) Proceedings of International Energy Agency (IEA) Task VIII Workshop, 15-19 September 1992 (pp 7-12) Enniskillen, N. Ireland
Pei MH, Hunter T and Royle DJ (1999a) Occurrence of Melampsora rusts in biomass willow plantations for renewable energy in the United Kingdom. Biomass and Bioenergy 17: 153-163
Pei MH, Hunter T and Royle DJ (1999b) Hybridisation in larch-alternating Melampsora epitea (M. larici-epitea). Mycololgical Research 103: 1440-1446
Pei MH, Royle DJ and Hunter T (1996) Pathogenic specialisation in Melampsora epitea var. epitea on Salix. Plant Pathology 45: 679-690
Pinon J (1992) Frequency and evolution of Melampsora laricipopulina Klebahn races in north-western France. Annals of Science and Forestry 49: 1-15
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McCracken, A., Dawson, W., Watson, S. et al. Pathotype Composition in Melampsora Epitea Populations Occurring on Willow (Salix) Grown in Mixed and Monoculture Plantations. European Journal of Plant Pathology 106, 879–886 (2000). https://doi.org/10.1023/A:1008797503403
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DOI: https://doi.org/10.1023/A:1008797503403