Summary
A total of 934 potato cultivars and clones from different breeding programmes across the world were tested for their reaction to early blight (Alternaria solani) in Brasilia-DF, Brazil. This field trial was set up in order to identify tetraploid potato genotypes with useful levels of resistance to early blight (EB) that were not correlated with late maturity or lateness. Artificial inoculation (spread ofA. solani infected leaves over plant canopy) was employed even though EB occurs naturally at epidemic levels in the test area. Four disease assessments were made every 10 days, beginning 45 days after planting. Based on the evaluation made 65 days after planting, only 27 clones were identified that had less lesioned leaf area than the resistant standard (cv. Aracy). Area under disease progress curve (AUDPC) was also used as a criterion of resistance. Using AUDPC as a parameter, 22 genotypes were identified presenting values lower than or identical to cv. Aracy. Differences in the commercial yield were recorded in genotypes with identical response to EB, suggesting that distinct levels of tolerance to EB also exist. In spite of the strong correlation between EB resistance and late maturity, some genotypes derived from the parental materials ‘NDD 277-2’, ‘Kufri Jyoti’, ‘CIP 377888-7’, ‘Maine-28’, and the clones ‘CFS 69.1’ and ‘I-853’ were identified as having good levels of EB field resistance not linked with the negative phenotypic trait of lateness. These materials presented medium to medium-early maturity with a vegetative cycle of around 90–95 days. Some selected genotypes presented more acceptable agronomic characteristics including resistance toPhytophthora infestans, potato leaf roll luteovirus (PLRV) and potato virus Y (PVY). The EB resistance sources identified in this work can be recommended as parental materials for widening the genetic base for EB disease resistance in breeding programmes for highland tropical and subtropical areas.
Similar content being viewed by others
References
Boiteux, L.S. & F.J.B. Reifschneider, 1993. Identificacão e caracterizacão da resistência do tipo redutora da taxa de progresso do crestamento fohar (Alternaria solani) em clones e cultivares de batata. Fitopatol. Bras. 18: 87–90.
Christ, B.J., 1991. Effect of disease assessment method on ranking potato cultivars for resistance to early blight. Plant Dis. 75: 353–356.
Douglas, D.R. & J.J. Pavek, 1972. Screening potatoes for field resistance to early blight. Am Potato J 49: 1–6.
Federer, W.T. & D. Raghavarao, 1975. On augmented designs. Biometrics 31: 29–35.
Frank, J.A., R.E. Webb & D.R. Douglas, 1979. Evaluation of several USDA potato clones for resistance to early blight. Plant Dis. Rprt. 63: 392–394.
Furumoto, O., R.L. Plaisted & E.E. Ewing, 1991. Comparison of two techniques for introgression of unadapted andigena germ plasm into temperate germ plasm. Am. Potato J. 68: 391–404.
Herriott, A.B., F.L. Haynes Jr & P.B. Shoemaker, 1990. Inheritance of resistance to early blight disease in tetraploid x diploid crosses of potatoes. Hort Science 25: 224–226.
Holley, J.D., R. Hall & G. Hofstra, 1983. Identification of ratereducing resistance to early blight in potato. Can. J. Plant Pathol. 5: 111–114.
Huarte, J.D., A.O. Mendiburu, M.C. Monti & I.P. Butzonitch, 1986. Serrana INTA: A widely adapted, virus resistant potato cultivar from Argentina. Am. Potato. J. 63: 695–699.
International Potato Center, 1985. Pathogen Tested List. Lima, Peru.
Johanson, A. & H.D. Thurston, 1990. The effect of cultivar maturity on the resistance of potatoes to early blight caused byAlternaria solani. Am. Potato J. 67: 615–623.
Mendoza, H.A., 1983. Selection of parental stocks for heat tolerance and earliness, pp. 7–16. In: Present and Future Strategies for Potato Breeding and Improvement. International Potato Center, Peru.
Mendoza, H.A., 1989. Population breeding as a tool for germplasm enhancement. Am. Potato J. 66: 639–653.
Mendoza, H.A. & F.L. Haynes, 1974. Genetic relationship among potato cultivars grown in the United States. HortScience 9: 328–330.
Mendoza, H.A. & C. Martin, 1989. Breeding for resistance to early blight (Alternaria solani), pp. 119–137. In: Fungal Diseases of the Potato. International Potato Center. Lima, Peru.
Nagaich, B.B. & B. Prasad, 1971 Interaction betweenAlternaria solani and potato virus X and Y. Indian J. Exp. Biol. 9: 88–90.
Nelson, R.R., 1973. Breeding Plants for Disease Resistance-Concepts and Applications. Pennsylvania State University Press.
Nelson, R.R., 1978. Genetics of horizontal resistance to plant diseases. Annu. Rev. Phytopathol. 16: 359–378.
Ortiz, R., C. Martin, M. Iwanaga & H. Torres, 1993. Inheritance of early blight resistance in diploid potatoes. Euphytica 71: 15–19.
Parlevliet, J.E., 1979. Components of resistance that reduce that rate of epidemic development. Annu. Rev. Phytopathol. 17: 203–222.
Pelletier, J.R. & W.E. Fry, 1989. Characterization of resistance to early blight in three potato cultivars: Incubation period, lesion expansion rate, and spore production. Phytopathology 79: 511–517.
Pelletier, J.R. & W.E. Fry. 1990. Characterization of resistance to early blight in three potato cultivars: Receptivity. Phytopathology 80: 366–370.
Plaisted, R.L. & R.W. Hoopes, 1989. The past record and future prospects for the use of exotic potato germplasm. Am Potato J 66: 603–627.
Reifschneider, F.J.B., 1987. Alternativas para a reducão ou eliminacão de produtos quimicos no controle de doenças de plantas. Fitopatol. Bras. 12: 305–306.
Reifschneider, F.J.B., C. Castro, S. Brune, C.A. Lopes, J.A. Buso & L.S. Boiteux, 1990. Avaliacão da resistência de germoplasma de batata aAlternaria solani andPhytophthora infestans no Brasil, pp. 169–171. In: O.A. Hidalgo & H. Rincon (Eds.) Avances en el Mejoramento Genetico de la Papa en los Paises de Cono Sur de Sudamerica. International Potato Center, Lima, Peru.
Reifschneider, F.J.B., C.M.T. Cordeiro & F.A.R. Filgueira, 1986. Resistência de batata aAlternaria solani. Hort Bras. 4: 22–25.
Reifschneider, F.J.B., C.M.T. Cordeiro, F.A.R. Filgueira, C. Bittencourt & M.E.N. Fonseca, 1985. Avaliação da resistência de germoplasma de batata (Solanum spp.) aAlternaria solani. Fitopatol. Bras. 10: 597–604.
Reifschneider, F.J.B., F.A.R. Filgueira, L.S. Boiteux & S. Brune, 1988. Resistência de batata (Solanum tuberosum L.) aAlternaria solani. Fitopatol. Bras. 13: 149.
Reifschneider, F.J.B., O. Furomoto & F.A.R. Filgueira, 1984. Illustrated key for the evaluation of early blight of potatoes. FAO Plant Prot. Bull. 32: 91–94.
Shaner, G. & R.E. Finney, 1977. The effect of nitrogen fertilization on the expression of slow-mildewing resistance in Knox wheat. Phytopathology 67: 1051–1056.
Silvela, L. & R. Diez-Barra, 1985. Recurrent selection in autogamous species under forced random mating. Euphytica 34: 817–832.
Souza-Dias, J.A.C., J.L. DeCastro & A.S. Costa, 1979. Maior susceptibilidade a pinta preta de batata infectada pelo virus do enrolamento da folha. Summa Phytopathol. 5: 25.
Wissar, R. & R. Ortiz, 1988. Mejoramento de papa en el CIP por adaptación a climas cálidos tropicales. Research Guide of International Potato Center No. 22, Lima, Peru.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Boiteux, L.S., Reifschneider, F.J.B., Fonseca, M.E.N. et al. Search for sources of early blight (Alternaria solani) field resistance not associated with vegetative late maturity in tetraploid potato germplasm. Euphytica 83, 63–70 (1995). https://doi.org/10.1007/BF01677862
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF01677862