Biological Control of Bacterial Wilt of Tomato by Bacillus spp. under Greenhouse Environment

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Date
2006
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uofk
Abstract
Eighty-one isolates of Bacillus were evaluated for their ability to inhibit the growth of Ralstonia solanacearum in vitro. Four isolates (B2, B5, B7 and B8) showed inhibitory effect on bacterial growth, were identified as Brevibacillus brevis B2 , Bacillus subtilis BS, Ba. subtilis B7 , and Ba. subtilis B8, respectively, by bacteriological assays, Biolog test and 16S rDNA sequence analysis. Four isolates promoted plant growth and reduced the infection of tomato wilt in sterile and nonsterile soil under greenhouse conditions to a varying degree as compared with non-treated control. Strain B2 showed significantly reduction of the disease infection by 80.0% and 87.4% in sterile and nonsterile soil,respectively.
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This paper had been presented for promotion at the university of Khartoum. To get the full text please contact the other at soadalgam@hotmail.com This paper had been presented for promotion at the university of Khartoum. To get the full text please contact the other at soadalgam@hotmail.com
Keywords
biological control; Bacillus spp. ; bacterial wilt; Ralstonia solanacearum
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