Plant Protect. Sci., 2002, 38(11):555-557 | DOI: 10.17221/10553-PPS

Assessment of genetic resistance to crown gall in roots of apricot hybrid descents

J. Tsiantos, P. Psallidas, J.M.S. Martins
1 NAGREF, Institute of Plant Protection, 38001 Volos, Greece
2 Benaki Phytopathological Institute, 14651 Athens, Greece
3 Estação Agronómica Nacional, 2780 Oeiras, Portugal

Plants from five inter-varietal crosses of the apricot cultivars Bergeron, Stark Early Orange and Stella were tested for their resistance to Crown Gall in field conditions at Velestino, Greece. One-year-old plants were inoculated by immersing the roots in a suspension of a mixture of local strains of Agrobacterium tumefaciens immediately before they were planted. Resistance was evaluated by the weight of the galls eight months after inoculation. Segregation of characters was observed in all the descents, demonstrating the heterozygotic nature of the parent cultivars. The distributions of gall weights obtained in the five hybrid families indicate that at least two allele pairs are involved in the determination of the level of resistance to the disease.

Keywords: Agrobacterium tumefaciens; apricot genotypes; resistance to crown gall

Published: December 31, 2002  Show citation

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Tsiantos J, Psallidas P, Martins JMS. Assessment of genetic resistance to crown gall in roots of apricot hybrid descents. Plant Protect. Sci. 2002;38(SI 2 - 6th Conf EFPP):555-557. doi: 10.17221/10553-PPS.
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    References

    1. SOKAL R.R., ROHLF F.J. (1994): Biometry: The Principles and Practice of Statistics in Biological Research. W.H. Freeman & Co., New York.

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