Summary
The disease indices of homogenous populations, as compiled from field data, measure field resistance. Since the disease level in a population is the product of disease severity in diseased plants and their frequency, it may be illustrated by a rectangle. This presentation facilitates analysis of the contribution, to field resistance, of tissue resistance versus escape ability.
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References
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Contribution from The Volcani Center, Agricultural Research Organization, Bet Dagan, Israel. 1972 Series, No 2211-E.
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Frank, Z.R. Evaluation of components of field resistance to the Pythium pod rot complex in groundnut (Arachis hypogaea L.) cultivars. Euphytica 22, 543–545 (1973). https://doi.org/10.1007/BF00036654
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DOI: https://doi.org/10.1007/BF00036654