אסיף מאגר המחקר החקלאי

Effect of Erwinia carotovora subsp. atroseptica alone and with Alternaria solani or Verticillium dahliae on disease development and yield of potatoes in Israel

Year:

1994

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Volume :

37

Co-Authors:

Wastie, R.L., Scottish Crop Research Institute, Invergowrie, Dundee, DD2 5DA, United Kingdom
Mackay, G.R., Scottish Crop Research Institute, Invergowrie, Dundee, DD2 5DA, United Kingdom
Nachmias, A., Gilat Regional Experiment Station, Mobile Post, Negev, 85280, Israel

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Abstract:

Tubers of 17 cultivars were inoculated with Erwinia carotovora subsp. atroseptica (ECA) and planted in 1986 and 1987 in the Negev in randomised plots in three blocks where either Verticillium dahliae or Alternaria solani were present or where both were absent. ECA reduced the yield in the control block and exacerbated the yield losses in the disease blocks, but the intensity of symptom expression did not always accord with the extent of yield loss. ECA had a greater effect on plants infected with A. solani than on those with V. dahliae. It was possible to categorise the cultivars as resistant, intermediate or susceptible with respect to ECA and early blight, but resistance to V. dahliae could not be differentiated from foliage maturity. © 1994 Kluwer Academic Publishers.

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