Factors Affecting Resistance to Root Rot and Wilt Diseases

  • G. A. Salt
Part of the World Crops: Production, Utilization, and Description book series (WCPU, volume 6)

Abstract

Root rot and wilt limit yields of faba beans in many parts of the world. It is important to recognise them as separate diseases, especially in breeding or selecting for resistance. But this can be difficult because some of the most obvious symptoms are similar to both, viz. reduced growth and yield, pale dull leaves turning black from the margins inwards, wilting and premature death. The characteristic symptom of root rot is a black rot of the root cortex. Wilting may occur when damage to the roots has become extensive but, more usually, the plant reduces its demand for water by shedding leaves and flowers and allowing pods to dry prematurely. By contrast, true wilt is a disease of the vascular system and when wilting occurs, there may be no visible damage to the root cortex. However, root rot usually develops sooner or later.

Keywords

Hydrolysis Agar Alanine Fusarium Egypt 

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Copyright information

© ICARDA 1982

Authors and Affiliations

  • G. A. Salt
    • 1
  1. 1.Rothamsted Experimental StationHarpenden, HertsUK

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