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Paper Information

Journal:   IRANIAN JOURNAL OF SOIL AND WATERS SCIENCES   2002 , Volume 16 , Number 1; Page(s) 0 To 0.
 
Paper: 

EFFECT OF APPLICATION OF PSEUDOMONAS FLUORESCENS INOCULANTS ON YIELD AND YIELD COMPONENTS OF SPRING WHEAT UNDER GREENHOUSE CONDITION

 
 
Author(s):  REYHANI TABAR A., SALEH RASTIN N., ALIKHANI H.A., MOHAMMADI M.
 
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Abstract: 
The species of Pseudomonas fluorescens is an important kind of Plant Growth Promoting Rhizobacteria (PGPR). In this research, the native strains of this bacterium, which were isolated from different fields under wheat cultivation, were investigated for their plant growth promating potentials. For this purpose, two sets of experiments were conducted under greenhouse conditions using sterile and none sterile field soil under fallow in a randomized complete block design (RCBD) with four replications. Treatments included inoculation with 22 individual strains (B1 to B22) and one set of multiple strains (B23) in sterile soil and 39 individual strains (B1 to B39) and one set of multiple strains (B40) inoculum in nonsterile soil. Each soil had a set of uninoculated control(B0). Seeds of spring wheat, Moghan 1 variety, were germinated under sterill conditions and then planted in the pots.During growing period, the pots were irrigated with distilled water to maintain soil moisture around 0.8 Fc. Three weeks after cultivation, the height of all seedings were measured. At harvest time, the height number of tilers and heads and dry weight of seeds and shoots were determined. The data were analyzed using MSTATC program. Greenhouse studies showed a positive response of wheat to inoculation with different native strains of P.fluorescens in most cases. In sterile soil, inoculation mostly affected plant he at an early growth stage. The inoculated seedlings were significantly taller than control (P<0.01). In non-sterile soils, The significant increases were obtained for plant hight (P<0.05) and number of heads (P<0.01) In both soils, the effect of inoculation was also pronounced for the number of tillers and significant increase (P<0.05) was observed at least in some bacterial treatments as compared with control.
 
Keyword(s): FLUORESCENT PSEUDOMONADS, PGPR, RHIZOSPHERE.
 
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