Effect of The Toxic Culture Filterate of The Fungus Macrophomina phaseolina Isolated From Sesame Seeds on Soil Microorganisms and Germination of Some Plant Seeds | ||
| Journal of Tikrit University For Agriculture Sciences | ||
| Article 1, Volume 14, Issue 1, June 2014, Pages 229-235 | ||
| Author | ||
| Najwa B .Al - Lashi | ||
| Abstract | ||
| Different concentrations ( 0, 1, 5, 10, and 20% ) of the toxic culture filterate of the fungus Macrophomina phaseolina grown on Potato Sucrose Broth was tested against four species of gram negative bacteria Pseudomonas aeruginosa, Klebsiella pneumonia, and gram positive basteria Sreptococcus sp. Staphyllococcus aureus. Results showed that K. pneumonia does not respond to all concentrations of the culture filterate while it caused significant inhibition to other bacterial species tested and the inhibition increased with the increase of concentration untill 10%. Effect of different concentrations of the culture filterate on four species of fungal plant pathogens, Fusarium solani,F. oxysporum,Rhizoctonia solani and Alternaria alternata showed significant inhibition on the growth of fungi, and also the inhibition increased with increasing the concentration. Maximum inhibition was noticed with A. alternata (59.64%) .When culture filterate was tested on seed germination, root elongation of four types of plants i.e. lentile, sunflower, cowpea and bean, maximum inhibition was recorded with cowpea (22.7%). Also, it caused inhibition to root elongation, seedling length and fresh weight of the four plants tested , lentile showed maximum inhibition (51.5 , 24.23 and 34.7% respectively ) . | ||
| Keywords | ||
| effect; toxic m seasm | ||
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