The Differences among Pear Genotypes to Fire Blight (Erwinia amylovora) Attack, Based on Observations of Natural Infection

Authors

  • Adriana F. SESTRAS Fruit Research Station, 3-5 Horticultorilor St., Cluj-Napoca 400454 (RO)
  • Radu E. SESTRAS University of Agricultural Sciences and Veterinary Medicine, Cluj-Napoca, 3-5 Mănăștur St., 400372 (RO)
  • Adrian BARBOS Fruit Research Station, 3-5 Horticultorilor St., Cluj-Napoca 400454 (RO)
  • Madalina MILITARU Fruit Research Institute, Pitesti, Maracineni, 117450, Jud. Arges (RO)

DOI:

https://doi.org/10.15835/nbha36277

Keywords:

Erwinia, attack degree, pear, species breeding, genotypes

Abstract

Fire blight, caused by the bacterium Erwinia amylovora, is one of the most damaging diseases of pear in the world. In Cluj-Napoca area, situated in central Transylvania, Romania, fire blight was observed first in 1994, very late comparative with the other countries from occidental Europe. The response of the pear cultivars and species from National Pear Collection from Cluj-Napoca to fire blight attack, assessed in natural conditions of infection, range on a large scale of variability, which denotes a strong influence of the genotype in expression of resistance or sensitivity to disease. From all genotypes, about 20.5% have not presented symptoms of attack, among them being the following: 'Blanquet precoce', 'Klementinka', 'Severianka', 'Beurre Bachelier', 'Kieffer Seedling', 'Er Shi Shinge', 'Beurre Amanlis', 'Bristol Cross', 'Beurre Liegel', 'Beurre Lucon', 'Grand Champion', 'Magness', 'Mericourt' etc. and several ancient autochthonous cultivars ('Pere malaiete', 'De zahar de Bihor', 'Cu miez rosu', 'Clopotele', 'Garoafa mare', 'Craiese', 'Para de apa'). Also, there were identified several species of Pyrus with no attack, as P. pollveria, P. common pear, P. lindlezi, P. malifolia, P. persica, P. ussuriensis, P. variolosa. The remarked genotypes could be potential sources for further breeding programmes and increase the number of genotypes available for breeding new pear cultivars resistant to Erwinia attack.

References

Bell, R. L., T. van der Zwet, R. C. Blake (1982). The pear breeding program of the United States Department of Agriculture. In: The Pear. T. van der Zwet and N.F. Childers (eds.), Horticultural Publications, Gainesville.

Bell, R. L. (1991). Pears (Pyrus). In: Moore, J. N., J. R. Jr Ballington (Eds.) Genetic resources of temperate fruit and nut crops. Wageningen, The Netherlands, 657-697.

Bell, R.L., T. Zwet (1993). New fire blight resistant advanced selections from the USDA Pear Breeding Program. Acta Hort. 338, 415-420.

Bell A., T.G. Ranney, T.A. Eaker, T.B. Sutton (2005). Resistance to fire blight among flowering pears and quince. HortScience 40 (2), 413-415.

Cociu, V., S. Oprea (1989). Metode de cercetare in ameliorarea plantelor pomicole. Ed. Dacia, Cluj-Napoca.

Gunen, Y., A. Misirli (2003). Fire blight of pear and resistance breeding. Ziraat Fakultesi Dergisi 40 (3), 25-32.

Hevesi, M., M. Göndör, K. Kása, K. Honty, M.G. Tóth (2004). Traditional and commercial apple and pear cultivars as sources of resistance to fire blight. EPPO Bulletin 34(3), 377-380.

Sestras, R. (2004). Ameliorarea speciilor horticole. Ed. AcademicPres, Cluj-Napoca.

Sestras, R., A. Sestras, A. Barbos (2007). The response of pear cultivars to Erwinia amylovora attack in Central Transylvania conditions, Romania. In: Book of Abstracts, 18th Eucarpia Genetic Resources Section Meeting, Plant Genetic Resources and their Exploitation in the Plant Breeding for Food and Agriculture, Piestany, Slovacia, 23-26 May 2007, 138-139.

Severin, V., F. Constantinescu, F. Jianu (1999). Appearance, expansion and chemical control of fire blight (Erwinia amylovora) in Romania. Acta Hort. 489, 79-84.

Thibault, B. (1981). Pear breeding for fire blight resistance program and first studies in France. Acta Hort. (117), 63-70.

Thibault, B., J.P. Paulin (1984). Pear breeding and selection for fire blight resistance. Acta Hort. 161 (141-146).

Zwet, van der, T., W.A. Oitto, M.N. Westwood (1974). Variability in degree of fire blight resistance within and between Pyrus species, interspecific hybrids, and seedling progenies, Euphytica 23 (2), 295-304.

Zwet, van der, T., R.L. Bell (1990). Fire blight susceptibility in Pyrus germplasm from eastern Europe. HortScience 25 (5), 566-568.

Zwet, van der, T., S.V. Beer (1995). Fire blight - Its nature, prevention, and control. USDA Agriculture Information Bulletin, No. 631.

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Published

2008-12-30

How to Cite

SESTRAS, A. F., SESTRAS, R. E., BARBOS, A., & MILITARU, M. (2008). The Differences among Pear Genotypes to Fire Blight (Erwinia amylovora) Attack, Based on Observations of Natural Infection. Notulae Botanicae Horti Agrobotanici Cluj-Napoca, 36(2), 97–103. https://doi.org/10.15835/nbha36277

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Section

Research Articles
CITATION
DOI: 10.15835/nbha36277

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