Faruk TOKLU, Davut Soner AKGÜL, Mehmet BİÇİCİ, Tolga KARAKÖY

The Relationship between Black Point and Fungi Species and Effects of Black Point on Seed Germination Properties in Bread Wheat

This study was undertaken to investigate the relationship between some fungi species and black point incidence and the effect of black point on seed weight, germination percentage, seedling emergence, seedling establishment, number of embryonic roots, and coleoptile length under field conditions in bread wheat. In this research, black-pointed and black point-free kernel samples of 5 bread wheat cultivars, namely Ceyhan-99, Doğankent-1, Yüreğir-89, Seyhan-95, and Adana-99 - commonly grown under the agroclimatic conditions of Çukurova Region, were used. Isolations from the black point-affected and black point-free kernels indicated that Alternaria spp. are the predominant fungi, followed by Chaetomium sp and Aspergillus niger. Epicoccum sp and Sclerotium sp were of minor importance. Discoloured kernels were heavier than normal ones. Germination percentage, seedling emergence, and seedling establishment under field conditions were reduced by the black pointed seeds, whereas number of embryonic roots and coleoptile length were not affected by black point.

Anahtar Kelimeler:

Bread wheat, black point, fungi, germination

The Relationship between Black Point and Fungi Species and Effects of Black Point on Seed Germination Properties in Bread Wheat

Keywords:

Bread wheat, black point, fungi, germination,

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Agarwal, G.P., B. Awastly and M.K. Thakur. 1983. Studies on the wheat grain storage in Madhya Pradash: efficacy of certain fungicides against black point disease of wheat. Rev. of Plant Pathology. 62: 137.
Agarwall, V.K. and J.B. Sinclair. 1987. Principles of Seed Pathology. 1. CRC Press, Boca Raton, Florida.
Basson, A.B.K., O.T. de Villiers and C.J. Rabie. 1990. Effect of black ends on quality characteristics of Clipper barley and malt. American Society of Brewing Chemists. 48: 8-13.
Biçici, M. and A. Çınar. 1988. Çukurova Bölgesi’nde yetiştirilen buğday tanelerinde görülen siyah leke hastalığının etiyolojisi ve önemi. V. Türkiye Fitopatoloji Kongresi, 18-21 Ekim, ANTALYA.
Clarke, M.P., M.J. Gooding and S.A. Jones. 2004. The effects of irrigation, nitrogen fertilizer and grain size on Hagberg falling number, spesific weight and black point of winter wheat. Journal of the Science of Food and Agriculture. 84: 227-236.
Conner, R.L. 1989. Influence of irrigation and precipitation on incidence of black point in soft white spring wheat. Canadian Journal of Plant Pathology. 11: 388-392.
Conner, R.L. and A.D. Kuzyk. 1988. Black point incidence in soft white spring wheat in Southern Alberta and Saskatchewan between 1982 and 1987. Canadian Plant Disease Survey. 68: 27-31.
Conner, R.L. and E.D.P. Whelan. 1989. Role of chromosome 5B in controlling black point incidence in hard red spring wheat. Canadian Journal of Plant Sciences. 69: 675-679.
Ellis, S.A., M.J. Gooding and A.J. Thompson. 1996. Factors influencing the relative susceptibility of wheat cultivars (Triticum aestivum L.) to black point. Crop Protection. 15: 69-76.
Gooding, M.J., A.J. Thompson, F.M.B. Collingborn, S.P. Smith and W.P. Davies. 1993. Black point on wheat grain: Influences of cultivar, management and season on symptom severity. Aspects of Applied Biology. 36: 391-396 Cereal Quality III.
Hosford, R.M. Jr., 1975. Phoma glomerata, a new pathogen of wheat and triticale, cultivar resistance related to wet period. Phytopathology. 65: 1236-1239.
Hudec, K. 2007. Influence of harvest date and geographical location on kernel symptoms, fungal infestation and embryo viability of malting barley. International Journal of Food Microbiology. 113: 125-132.
Jacobs, B. and C.J. Rabie. 1987. The correlation between mycelial presence and black point in barley. Phytophylactica. 19: 77-81.
Kumar, J., P. Schafer, R. Huckelhoven, G. Langen, H. Baltruschat, E. Stein, S. Nagarajan and K.H. Kogel. 2002. Bipolaris sorokiniana, a cereal pathogen of global concern: Cytological and molecular approaches towards better control. Molecular Plant Pathology. 3: 185-195.
Lehmensiek, A., A.W. Campbell, P.M. Williamson, M. Michalowitz, M.W. Sutherland and G.E. Daggard 2004. QTL’s for black point resistance in wheat and the identification of potential markers for use in breeding programs. Plant Breeding. 123: 410-416.
Lorenz, K. 1986. Effects of black point on grain composition and baking qualityof New Zeland wheat. N. Z. J. Agric. Res. 29: 711-718.
Mak, Y., R.D. Willowa, T.H. Roberts, C.V. Wrigley, P.J. Sharp and L. Copeland. 2006. Black point is associated with reduced levels of stress, disease- and defence-related proteins in wheat grain. Molecular Plant Pathology. 7: 177-189.
Martin, P.M.D. and G.A. Gilman. 1976. A consideration of mycotoxin hypothesis with special reference to the mycoflora of maize, sorghum, wheat and groundnuts. Tropical product institute, 6- 105, London, VIII + 112pp.
Moschini, R.C., M.N. Sisterna and M.A. Carmona. 2006. Modelling of wheat black point incidence based on meteorological variables in the southern Argentinean Pampas region. Australian Journal of Agricultural Research. 57: 1151-1156.
Özer, N. 2005. Determination of the fungi responsible for black point in bread wheat and effects of disease on emergence and seedling vigour. Trakya Univ. J. Sci. 6: 35-40.
Rees, R.G., D.J. Martin and D.P. Law. 1984. Black point in bread wheat. Effects on quality and germination and fungal associations. Australian Journal of Experimental Agriculture and Animal Husbandry. 127: 601-605.
Sadasivaiah, R.S., S.M. Perkovic, D.C. Pearson, B. Postman and B.L. Beres. 2004. Registration of ‘AC Andrew’ wheat. Crop Sci. 44: 696-697.
Sisterna, M.N. and S.J. Sarandon. 2005. Preliminary studies on the natural incidence of wheat black point under different fertilization levels and tillage systems in Argentina. Plant Pathology Journal. 4: 26-28.
Toklu, F., H. Özkan and T. Yağbasanlar. 1999. Bazı ekmeklik ve makarnalık buğday genotiplerinde dane kararmasının çimlenme ve fide gelişimine etkisi. Türkiye 3. Tarla Bitkileri Kongresi. Cilt I, Genel ve Tahıllar. Adana. 378-383.
Wang, H., M.R. Fernandez, F.R. Clarke, R.M. DePauw and J.M. Clarke. 2002. Effects of foliar fungicides on kernel black point of wheat in southern Saskatchevan. Canadian Journal of Plant Pathology. 24:287-293.
Wang, H., M.R. Fernandez, T.N. McCaig, Y.T. Gan, R.M. DePauw and J.M. Clarke. 2003. Kernel discoloration and downgrading in spring wheat varieties in western Canada. Canadian Journal of Plant Pathology. 25:350-361.
Williamson, P.M. 1997. Black point of wheat. In vitro production of symptoms, enzymes involved, and association with Alternaria alternata. Australian Journal of Agricultural Research. 48: 13-19.