SUSCEPTIBILITY OF SOME FLAX CULTIVARS TO SEEDLING DAMPING-OFF | ||
| Journal of Plant Production | ||
| Article 12, Volume 30, Issue 1, January 2005, Pages 257-266 PDF (607.44 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jpp.2005.237099 | ||
| Author | ||
| Fathia S. El-Shoraky, | ||
| Institute of Plant Pathology, Agric. Res. Center, Giza, Egypt. | ||
| Abstract | ||
| The seedlins of growing flax cultivars and promising strains exhibited various reaction of seedling damping–off. Fusarium spp.;Rhizoctoniasolani ; Pythium spp.; Macrophomina phaseolina and Sclerotium rolfsii were isolated from affected seedlings and shown to be pathogenic to flax under specific controlled conditions. A wide range of resistance among and within varieties resulted from the difference among varieties to the same isolates and the different reaction of a single variety to many isolates. Isolates of Rhizoctonia solani and Macrophomina phaseolina were the primary agents in pre-emergence damping-off and were associated with sever necrosis of roots and/or hypocotyls. Macrophomina and Fusarium induced severe post-emergence, and induced severe root necrosis on surviving plants. All of the three pathogens considered important components of the flax seedling damping–off diseases. | ||
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