Abstract
European red clover (Trifolium pratense) crops are challenged by clover rot, a devastating disease caused by Sclerotinia trifoliorum or, in some cases by S. sclerotiorum. No completely resistant cultivars are available and resistance breeding is hampered by the lack of knowledge on the number of involved resistance genes and the heritability of clover rot resistance. In this study, we estimated the number of major genes contributing to clover rot resistance by analysing 15 F1 progeny populations from pair crosses between ramets of resistant and susceptible genotypes. Parent plants were chosen from diverse, diploid populations, including wild material, landraces and cultivars. Young progeny plants were inoculated with ascospores, evaluated phenotypically and the segregation of disease scores was studied. Our results indicated that clover rot resistance may be conferred by three major effect genes, although segregation patterns suggested that there may be numerous minor effect genes involved as well. No proof was found for a maternal inheritance of clover rot resistance. To get insight in the heritability of clover rot resistance, we applied divergent selection by our high-throughput bio-test on an experimental diploid population: the original population (70.5 %), the first generation after selection for susceptibility (79.2 %) and the first generation after selection for resistance (62.3 %) differed significantly in susceptibility (p < 0.001). The second generation after selection for resistance (60.0 %) was not more resistant than the first generation after selection for resistance. In the first generation of selection the heritability (h2) was on average 0.34. In the second generation of selection h2 was 0.07. These findings have important implications for resistance breeding.
Similar content being viewed by others
References
Arahana VS, Graef GL, Specht JE, Steadman JR, Eskridge KM (2001) Identification of QTLs for resistance to Sclerotinia sclerotiorum in soybean. Crop Sci 41:180–188
Bert PF, Dechamp-Guillaume G, Serre F, Jouan I, de Labrouhe DT, Nicolas P, Vear F (2004) Comparative genetic analysis of quantitative traits in sunflower (Helianthus annuus L.). Theor Appl Genet 109:865–874
Boland GJ, Hall R (1994) Index of host plants of Sclerotinia sclerotiorum. Can J Plant Pathol 16:93–108
Boller B, Posselt UK, Veronesi F (2010) Handbook of Plant Breeding. Springer, Dordrecht
Dabkeviènë G, Dabkevièius Z (2005) Evaluation of wild red clover (Trifolium pratense L.) ecotypes and hybrid populations (Trifolium pratense L. × Trifolium diffusum Ehrh.) for clover rot resistance (Sclerotinia trifoliorum Erikks.). Biolojia 3:54–58
Delclos B, Duc G (1996) Etude de la résistance à Sclerotinia trifoliorum chez le trèfle violet (Trifolium pratense L.). PhD thesis. Université de Paris, Orsay, France
Dijkstra J (1964) Inoculation with ascospores of Sclerotinia trifoliorum for detection of clover rot resistant red clover. Euphytica 13:314–329
Falconer DS, Mackay TFC (1996) Introduction to quantitative genetics. Pearson Education, Harlow
Hartl DL, Clark AG (2007) Principles of population genetics. Sinauer, Massachusetts
Herrmann D, Boller B, Studer B, Widmer F, Kölliker R (2008) Improving persistence in red clover: insights from QTL analysis and comparative phenotypic evaluation. Crop Sci 48:277
Kearsey MJ, Pooni HS (1996) The genetical analysis of quantitative traits. Chapman & Hall publishing, London
Kim HS, Diers BW (2000) Inheritance of partial resistance to Sclerotinia stem rot in soybean. Crop Sci 40:55–61
Klimenko I, Razgulayeva N, Gau M, Okumura K, Nakaya A, Tabata S, Kozlov NN, Isobe S (2010) Mapping candidate QTLs related to plant persistency in red clover. Theor Appl Genet 120:1253–1263
Marum P, Smith RR, Grau CR (1994) Development of procedures to identify red clover resistant to Sclerotinia trifoliorum. Euphytica 77:257–261
Micic Z, Hahn V, Bauer E, Schön CC, Knapp SJ, Melchinger AE (2004) QTL mapping of Sclerotinia midstalk-rot resistance in sunflower. Theor Appl Genet 109:1474–1484
Miklas PN (2007) Marker-assisted backcrossing QTL for partial resistance to Sclerotinia white mold in dry bean. Crop Sci 47:935–942
Öhberg H 2008 Studies of the persistence of red clover cultivars in Sweden with particular reference to Sclerotinia trifoliorum. PhD thesis. Swedish University of Agricultural Studies, Umeå, Sweden
Öhberg H, Ruth P, Bang U (2008) Differential responses of red clover cultivars to Sclerotinia trifoliorum under diverse natural climatic conditions. Plant Pathol 57:459–466
Park SO, Coyne DP, Steadman JR, Skroch PW (2001) Mapping of QTL for resistance to white mold disease in common bean. Crop Sci 41:1253–1262
Raynal G (1985) Observations sur le comportement varietal au champ du trèfle violet vis-à-vis de la sclérotiniose et sur l’épidémiologie de la maladie. Fourrages 101:85–104
Rönicke S, Hahn V, Vogler A, Friedt W (2005) Quantitative trait loci analysis of resistance to Sclerotinia sclerotiorum in sunflower. Phytopathol 95:834–839
Saharan GS, Mehta N (2008) Sclerotinia diseases of crop plants: biology ecology and disease management. Springer, New Delhi
Saint Clair DA (2010) Quantitative disease resistance and quantitative resistance loci in breeding. Annu Rev Phytopathol 48:247–268
Slusarenko AJ, Fraser RSS, van Loon LC (2000) Mechanisms of resistance to plant diseases. Kluwer Academic Publishers, Dordrecht, The Netherlands
Smith RR (1996) A two stage selection procedure for resistance to Sclerotinia in red clover. U.S. Dairy Forage Research Center Research Summaries: 4–5
Taylor NL, Quesenberry KH (1996) Red clover science. Kluwer academic publishers, Dordrecht, The Netherlands
Uhm JY, Fuji H (1983) Heterothallism and mating type mutation in Sclerotinia trifoliorum. Phytopathol 73:569–572
Vaverka M, Vaverka S, Vichova J (2003) Resistance of cultivars of the Czech assortment of red clover Trifolium pratense L. to the stem and crown rot Sclerotinia trifoliorum Erikss. Czech J Genet Plant 39:326–329
Vleugels T, Baert J, van Bockstaele E (2011) Construction of a bio-test for infection of red clover plants with Sclerotinia trifoliorum. Comm Agr Appl Biol Sci 76:583–586
Vleugels T, De Riek J, Heungens K, van Bockstaele E, Baert J (2012) Genetic diversity and population structure of Sclerotinia species from European red clover crops (Trifolium pratense L.). J Plant Pathol 94:493–503
Vleugels T, Baert J, van Bockstaele E (2013a) Morphological and pathogenic characterization of genetically diverse Sclerotinia isolates from European red clover crops (Trifolium pratense L.). J Phytopathol 161:254–262
Vleugels T, Cnops G, van Bockstaele E (2013b) Screening for resistance to clover rot (Sclerotinia spp.) among a diverse collection of red clover populations (Trifolium pratense). Euphytica Doi: 10.1007/s10681-013-0949-4
Vuong TD, Diers BW, Hartman GL (2008) Identification of QTL resistance to Sclerotinia stem rot in soybean. Crop Sci 48:2209–2214
Yue B, Radi SA, Vick BA, Cai X, Tang S, Knapp SJ, Gulya TJ, Miller JF, Hu J (2008) Identifying quantitative trait loci for resistance to Sclerotinia head rot in two USDA sunflower germplasms. Phytopathol 98:926–931
Zhao J, Meng J (2003) Genetic analysis of loci associated with partial resistance to Sclerotinia sclerotiorum in rapeseed (Brassica napus L.). Theor Appl Genet 106:759–764
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Vleugels, T., van Bockstaele, E. Number of involved genes and heritability of clover rot (Sclerotinia trifoliorum) resistance in red clover (Trifolium pratense). Euphytica 194, 137–148 (2013). https://doi.org/10.1007/s10681-013-0982-3
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10681-013-0982-3