Mechanisms of Resistance to Plant Diseases

Volume 17 of the series Advances in Agricultural Biotechnology pp 80-142

The Genetic Bases of Relationships between Microbial Parasites and their Hosts

  • I. R. Crute

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Historical perspective. Loss of reproductive capacity due to infectious disease is one of many selective forces operating in natural plant populations (Harlan, 1976; Levin, 1975). One result of the imposed selection is the evolution of genotypes exhibiting an enhanced capability to reproduce despite the prevalence of a disease-causing agent. There is now clear evidence that disease resistance and tolerance are important features of natural plant populations (Segal et al., 1980; Ben Kalio & Clarke, 1979).