Evaluation of fluorescens Pseudomonas efficacy for promoting corn zea maysl. Growth and induction of it systematic resistance against charcoal rot disease

Kareem E.S. Alkurtany, Abdul; A. Hassan, Abdullah; Mohammed Yousef, Hiba

	Evaluation of fluorescens Pseudomonas efficacy for promoting corn zea maysl. Growth and induction of it systematic resistance against charcoal rot disease
Journal of Tikrit University For Agriculture Sciences
Article 1, Volume 18, Issue 1, 2018, Pages 137-149
Authors
Abdul Kareem E.S. Alkurtany; Abdullah A. Hassan; Hiba Mohammed Yousef
Abstract
Three P. fluorescens isolates coding P. f12 ,P.f 14 and P.f 16 were selected in pots experiment for evaluation of their efficiency and fungicides Topsin in some Zea mays growth parameters and systemic resistance induction against the charcoal rot disease caused by M. phaseolina. The results showed the inoculation with all P. fluorescens isolates alone and with the Topsin led to a significant increase in seed germination percentage and the dry weight of root and shot system. The P. fluorescens (P.f 16) isolate with the Topsin in present of the pathogen M. phaseolina superior on the other treatment which give the best results, in which germination percentage was 93.3%, the dry weight of root and shot system were 13.38 and 3.797 g.plant-1 compared with the pathogen alone resulting in 42.2%,3.53 and 1.853 g.plant-1, respectively. The P. fluorescens (P.f 16) isolate alone or with the Topsin led to decrease in the infection severe of pathogen M. phaseolina. The interaction between the P. fluorescens (P.f 16) and Topsin in present of the pathogen M. phaseolinainducedthe systemic resistance, this treatment gives highest specific activity of the peroxidase (11.2 unit.mg protein -1) and chitinase (180 unit.mg protein -1).
Keywords
Pseudomonas fluorescens; Phaseolina; Zea mays L; fluorescens Pseudomonas

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