Effects of Two Hirsutella minnesotensis on Soybean Cyst Nematode and Soybean Growth(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:

2011年02期

Page:

266-271

Research Field:

Publishing date:

Info

Title:

Effects of Two Hirsutella minnesotensis on Soybean Cyst Nematode and Soybean Growth

Author(s):

QIAN Hong-li¹; 2;  LI Shu-xian³;  XU Yan-li¹;  LI Chun-jie¹;  SUN Yu-qiu¹; 4

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

2. State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008,Jiangsu, China;

Keywords:

Hirsutella minnesotensis;  Endoparasitic fungi;  Soybean cyst nematodes;  Biological control

PACS:

S565.1

DOI:

10.11861/j.issn.1000-9841.2011.02.0266

Abstract:

Hirsutella minnesotensis is a endoparasitic fungi in juveniles of soybean cyst nematodes (SCN). In this study, the effects of two H. minnesotensis isolates on population distribution of SCN and soybean growth were evaluated. Experiments were conducted to inoculate with either 0.4 g fresh mycelium of Hirsutella minnesotensis alone, 9 000 eggs of soybean cyst nematode alone, or both treatments and no-treatment in 300 cm³ autoclaved soil in greenhouse. Thirty-five days after inoculation on soybean,the fresh weight of soybean plant inoculated with H. minnesotensis isolates 1-10 and HLJ07-21-3 increased by 30.98% and 27.66%, respectively. Hirsutella minnesotensis significantly reduced the number of SCN egg, root female incect and soil cyst. Compared with CK, isolates 1-10 and HLJ07-21-3 significantly (P＜0.05) decreased the densities of egg by 63.7% and 46.7%, respectively. Moreover, compared with only inoculated with SCN, they reduced the total number of nematode (sum of eggs and J₂) by 43.6% and 35.8%, respectively. In conclusion, isolate 1-10 could reduce the nematode population more efficiently than HLJ07-21-3.

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