Research articles
ScienceAsia 45 (2019): 419-424 |doi:
10.2306/scienceasia1513-1874.2019.45.419
Detection of glyphosate resistance in black nightshade
Solanum nigrum from Hunan China
Tingting Zou, Chenzhong Jin, Zanjiang Zhu, Yihong Hu*
ABSTRACT: Black nightshade (Solanum nigrum) is a kind of common malignant weed in the agricultural fields
worldwide. In recent years, it has not been well controlled under the commercial rate of glyphosate application in
some areas of Hunan Province in China. To evaluate and confirm the glyphosate resistant biotypes of S. nigrum, the
seeds of ten suspected glyphosate resistant populations of S. nigrum were collected in the agricultural fields from this
province. Their GR50 values and glyphosate resistance were determined by the biomass method, the comprehensive
index of pesticide injury method, and the leaf discs method independently. The results showed that ‘r1, r2, r3, and
r9’ populations were of moderate resistance levels to glyphosate. But the shikimic acid levels in S. nigrum did not
display a typical sigmoidal curve to glyphosate resistance, supporting that the mechanism of different resistance might
be involved among the glyphosate resistant biotypes in S. nigrum.
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Collaborative Innovation Center for Field Weeds Control of Hunan Province,
Hunan University of Humanities, Science and Technology, Loudi 417000 China |
* Corresponding author, E-mail: huyhongwangyi@163.com
Received 15 Oct 2018, Accepted 27 Sep 2019
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