SCREENING ACTINIDIA GERMPLASM FOR DIFFERENT LEVELS OF TOLERANCE, OR RESISTANCE, TO PSA (PSEUDOMONAS SYRINGAE PV. ACTINIDIAE)

S. Nardozza, M. Martinez-Sanchez, C. Curtis, P.M. Datson , M. Montefiori
Bacterial canker of kiwifruit, caused by the virulent form of Pseudomonas syringae pv. actinidiae (Psa), is the most important disease that the kiwifruit industry has faced. The disease has a devastating effect on many Actinidia chinensis cultivars and it has been shown to affect A. deliciosa as well, these being the most important commercial species. Because management and control of the disease has not always been sufficient to sustain commercial orchards, host-plant resistance or high tolerance are very desirable characters for the development of successful cultivars.
Previous observations on Actinidia germplasm suggested the presence of different degrees of tolerance, or possibly resistance, across the genus Actinidia, although the lack of screening methods allowing easy measurement of pathogen colonization is a major limitation when searching for resistance/tolerance across germplasm collections.
The identification and characterization of different degrees of tolerance and the presence of host-pathogen resistance within the Actinidia germplasm are important contributions to the development of kiwifruit cultivars resistant to Psa.
Nardozza, S., Martinez-Sanchez, M., Curtis, C., Datson , P.M. and Montefiori, M. 2015. SCREENING ACTINIDIA GERMPLASM FOR DIFFERENT LEVELS OF TOLERANCE, OR RESISTANCE, TO PSA (PSEUDOMONAS SYRINGAE PV. ACTINIDIAE) . Acta Hort. (ISHS) 1096:351-355
https://doi.org/10.17660/ActaHortic.2015.1096.40
kiwifruit, bacterial canker, disease resistance, hypersensitive response (HR), breeding, bioassay
English

Acta Horticulturae