EFFECT OF SEED TREATMENT WITH AN ANTAGONISTIC STRAIN OF Pseudomonas fluorescens ON SEED MYCOFLORA, GERMINATION,AND VIGOR OF SORGHUM (Sorghum bicofor) SEEDLINGS.

Document Type : Original Article

Authors

Plant Pathology Res. Inst., ARC, Giza, Egypt.

Abstract

A talc formulation of an antagonistic strain of Pseudomonas ffuorescens (Pt-
1) isolated from roots of rice plants was tested for its use as a seed dressing agent.
Standard blotter test ,germination test ,vigor test and growing in water agar and peat
soil were employed to test the effect of the talc formulation on sorghum seed
mycollors .germlnatlon.seed Vigor and rate of growth of seedlings.The formulation
when applied to seeds inhibited seed-berne pathogenic fungi like Fusarium
moniliforme .F.semitectum.CulVUlaris lunata and Phoma spp < /em>. Also ,saprophtic fungi
like ASP6rgiDus navus ,Cladosporium c/sdosporoides and curvularia lunata were
inhibited on seeds .The treated seeds showed higher germinalion and the seedlings
exhibited Increased vigor .The possibirrty of using powdered talc formulation of Pf-t
strain of P.fIuorescens in routine seed treatments is recommended.

Keywords

Journal of Plant Production
Volume 28, Issue 2
February 2003
Pages 1029-1038

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