Peculiarities of the interaction genotype - Fusarium toxin in diverse phytopathosystems
2006
Lupascu, G. | Sasco, E. | Gavzer, S. | Fandeev, E. | Melian, L.
The interaction genotype-fusaric acid has been studied using the following phytopathosystems: Triticum aestivum, Triticosecale, Beta vulgaris - Fusarium oxysporum. Well calibrated seeds were maintained for 18 hours in water solution of fusaric acid. The cultivation of the seedlings was performed in Petri dishes. The reaction to the pathogen was evaluated by the following parameters: germination and growth of radicle and plumule/hypocotyl in 10 day-old wheat and triticosecale seedlings and 12 day-old sugar beet seedlings. The susceptibility of wheat, triticosecale and sugar beet to fusaric acid - a toxin produced by F. oxysporum (one of the common pathogens leading to the development of root rot), shows that cultural practices of crop rotation may prevent only partially the development of Fusarium root rot. By bifactorial analysis of variance it was established that in the relation plant-fusaric acid the decisive role belongs to genotypic factor, this denotes the priority of genetic methods of Fusarium root rot control.
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