Effect of BRF-1 and BRF-2 on Root Rot and Seed Yield in Soybean(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:

2012年05期

Page:

801-803

Research Field:

Publishing date:

Info

Title:

Effect of BRF-1 and BRF-2 on Root Rot and Seed Yield in Soybean

Author(s):

ZHOU Ke-qin¹; HAN Bing-jin¹; ZHANG Qiu-ying¹; LIU Wen-zhi³; GONG Xue-kai¹; LI Yan-hua¹; MENG Ying⁴; WANG Guang-hua¹

1.Key Laboratory of Mollisols Agroecology,Northeast Institute of Geography and Agroecology,Chinese Academy of Sciences,Harbin 150081;?

2.Longzhen Base of Shenyang PLA Farming and Sideline Production Administration,Wudalianchi 164135;?

3.Heilongjiang Academy of Land Reclamation Sciences,Jiamusi 154007;?

4.Crop Tillage and Cultivation Institute,Heilongjiang Academy of Agricultural Sciences,Harbin 150086,Heilongjiang,China

Keywords:

Plant growth-promoting bacteria; Phytophthora capsici; Growth; Soybean yield

PACS:

S435.651

DOI:

10.3969/j.issn.1000-9841.2012.05.024

Abstract:

BRF-1(Paenibacillus Polymyxa)and BRF-2(Bacillus subtilis)are gram-positive bacteria obtained from soybean root rhizosphere.Dual-culture tests showed they had strong antagonism to many fungal pathogens，while they inhibited the development of plant diseases in vitro experiment.In 2010,a field trial with BRF-1 and BRF-2 was carried out in northern region of Heilongjiang Province to investigate their field performance in reducing disease incidence of soybean.Both BRF-1 and BRF-2 inhibited soybean root rot ?with a reduction in disease severity index by 44.4% and 8.8%,respectively.BRF-1 was a potential plant growth promoting bacteria in controlling soybean root rot,which increased above-ground dry matter and root dry matter accumulation at flowering and initial seed-filling stages,and thus enhanced seed yield by 5.9%.

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