摘要
本研究从４１个土样中分离到大豆外根际细菌７２３株，根内细菌１９４株。通过对病原菌Ｆ３（Ｆｕｓａｒｉｕｍｏｘｙｐｏｒｕｍ）、Ｗ１（Ｆｕｓａｒｉｕｍｓｏｌａｎｉ）、Ｓ１（ＦｕｓａｒｉｕｍＳＰ．）的平板拮抗测定，得到拮抗菌２７９株，对其中１５株根际细菌进行了温室防病试验，得到２株防病效果较好的菌株，其中ＢＨ１防效最高，对Ｆ３、Ｗ１、Ｓ１的防效分别为：６４．０％、６３．４％、３３．３％。
Rhizobacteria were isolated from the ectorhizosphere and endorhizosphere of soybean and 937 isolates were obtained. The antagonistic tests of all these isolates to three strains of Fusarium spp. nemed F 3 (Eusarium oxysporum). W 1 (Fesarium solani) and S 1 (Fusarium sp.) were carried out by pairing culture on PDA or King's B media. The results showed that 279 isolates were antagonistic to 3 pathogens. Of 15 isolates tested in the greenhouse, 2 sighificantly suppressed soybean root-rot(SRR.), they were identified as Bacillus sp.. Isolate BH 1 showed the best efficacy. It suppressed SRR. by 64.0%, 63.4% and 33.3% to F 3,W 1 and S 1 respectively.
出处
《大豆科学》
CAS
CSCD
北大核心
1998年第1期53-58,共6页
Soybean Science
关键词
大豆
根腐病
根际细菌
拮抗
Soybean root-rot disease
Rhizobacteria
Antagonism
