אסיף מאגר המחקר החקלאי

Significance of the Root System in Verticillium Wilt Tolerance in Potato and Resistance in Tomato

Year:

1995

Source of publication :

Authors :

Volume :

43

Co-Authors:

Lahkim, L.T., Agricultural Research Organization, Gilat Experiment Station, Negev, 85280, Israel
Nachmias, A., Agricultural Research Organization, Gilat Experiment Station, Negev, 85280, Israel

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Abstract:

Reciprocal (susceptible/resistant) grafting experiments were used to determine whether the root is the major site of resistance to Verticillium wilt disease in tomato and tolerance in potato. Increased resistance/tolerance was seen in both species when the resistant cultivar served as rootstock. In potato, however, stem-dipping experiments indicated that tolerance was independent of the root. In experiments designed to determine whether a major gene plays a role in Verticillium wilt tolerance in potato, tomato races 1 and 2 of V. dahliae did not show differential pathogenicity on tolerant potato cultivars inoculated by the root-dip method. The results indicate that the root system plays an important role in the defense mechanisms to Verticillium wilt both in tomato and potato. © 1995 Taylor & Francis Group, LLC.

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