Scientia Agricultura Sinica ›› 2020, Vol. 53 ›› Issue (17): 3518-3526.doi: 10.3864/j.issn.0578-1752.2020.17.009

• PLANT PROTECTION • Previous Articles     Next Articles

Resistance Level, Mechanism of Alopecurus myosuroides and Control Efficacy in Wheat Field in Shandong Province

GAO XingXiang(),LI Jian(),ZHANG YueLi,LI Mei(),FANG Feng   

  1. Shandong Key Laboratory of Plant Virology, Institute of Plant Protection, Shandong Academy of Agricultural Sciences, Ji’nan 250100
  • Received:2020-01-16 Accepted:2020-03-27 Online:2020-09-01 Published:2020-09-11
  • Contact: Mei LI E-mail:xingxiang02@163.com;lijian910@163.com;limei9909@163.com

Abstract:

【Background】As a new kind of malignant gramineous in the mainland of China in recent years, Alopecurus myosuroides has been widely distributed in Shandong, Henan, Hebei and Anhui provinces, and its distribution area is constantly expanding.【Objective】The objective of this study is to determine the resistance level, mechanism of A. myosuroides to herbicides and the control efficacy in wheat field, and to provide a theoretical basis for A. myosuroides control in winter wheat field.【Method】Whole-plant dose response experiments were conducted to determine the resistance level of nine populations to ALS inhibitor such as pyroxsulam, mesosulfuron-methyl and ACC inhibitor such as pinoxaden, clodinafop-propargyl and fenoxaprop-P-ethyl in the greenhouse, and the target gene of resistant population was detected. At the same time, herbicide control experiments were carried out before and after winter in the wheat field.【Result】The results of greenhouse experiment showed that only one of the nine populations, population 8 (JN2), had obvious resistance to the herbicides of ALS inhibitor (pyroxsulam and mesosulfuron-methyl), and the resistance index (RI) reached 47.32 and 15.97, respectively. ALS gene sequence analysis showed that Pro (CCC) to Thr (ACC) mutation at position 197 of the ALS gene occurred in the resistant population. Meanwhile, all the populations had no resistance to the ACC inhibitor pinoxaden, clodinafop-propargyl and fenoxaprop-P-ethyl. The results of field trials showed that the effect of application before winter was better than that after winter, the fresh weight control efficacy of pinoxaden before winter was 98.6% and that after winter was 89.1%. The plant control efficacy and fresh weight control efficacy of pyroxsulam and mesosulfuron-methyl before winter were 72.2%-89.3% and those after winter were 68.6%-83.2%, but pinoxaden, clodinafop- propargyl and fenoxaprop-P-ethyl all showed good control efficacy on A. myosuroides, the plant control efficacy and fresh weight control efficacy were above 96.2% before winter and 82.6%-92.2% after winter.【Conclusion】Among the nine tested populations, one population was found to have high resistance to mesosulfuron-methyl and pyroxsulam, but no resistant population was found to ACC inhibitor herbicides, such as pinoxaden, clodinafop-propargyl and fenoxaprop-P-ethyl. The results of laboratory test and field test were consistent.

Key words: Alopecurus myosuroides, ALS inhibitor, ACC inhibitor, resistance level, resistance mechanism

Table 1

Resistance level of A. myosuroides populations to mesosulfuron-methyl and pyroxsulam"

药剂
Herbicide
种群编号
Number of population
回归方程
Regression equation
(y=)
相关系数Correlation coefficient GR50 (g·hm-2)
(95% CL)
GR90 (g·hm-2)
(95% CL)
相对抗性指数
RI
甲基二磺隆Mesosulfuron-methyl 1 4.8011+1.2453x 0.9756 1.44 (1.02-1.92) 15.44 (11.96-20.90) 2.03
2 5.0663+1.1225x 0.9932 0.87 (0.54-1.26) 12.10 (9.23-16.55) 1.23
3 4.8753+1.5563x 0.9535 1.20 (0.47-2.08) 8.01 (5.19-13.43) 1.69
4 5.0964+1.1904x 0.9342 0.83 (0.27-1.58) 9.90 (6.10-18.34) 1.17
5 5.2020+1.8078x 0.9292 0.77 (0.48-1.10) 3.95 (3.18-4.80) 1.08
6 5.1410+1.0520x 0.9019 0.73 (0.43-1.10) 12.14 (9.12-16.95) 1.03
7 5.2486+1.6669x 0.9241 0.71 (0.43-1.03) 4.17 (3.33-5.11) 1.00
8 4.2554+0.7059x 0.9752 11.34 (7.96-17.07) 741.59 (315.44-2558.27) 15.97
9 4.9515+1.9814x 0.9770 1.06 (0.73-1.41) 4.69 (3.90-5.58) 1.49
啶磺草胺
Pyroxsulam
1 5.2960+1.1712x 0.9327 0.56 (0.31-0.87) 6.94 (5.34-9.15) 1.65
2 5.3536+1.1046x 0.9361 0.48 (0.25-0.77) 6.92 (5.24-9.27) 1.41
3 5.1644+1.1325x 0.9221 0.72 (0.42-1.06) 9.69 (7.44-13.06) 2.12
4 5.3877+1.4096x 0.9643 0.53 (0.29-0.82) 4.31 (3.33-5.45) 1.56
5 5.3531+1.2250x 0.9413 0.51 (0.27-0.81) 5.73 (4.40-7.44) 1.50
6 5.3454+0.7355x 0.8265 0.34 (0.14-0.63) 18.74 (12.40-32.00) 1.00
7 5.2316+0.8877x 0.8704 0.55 (0.28-0.89) 15.23 (10.85-23.08) 1.62
8 4.4847+0.4271x 0.9471 16.09 (9.07-35.02) 1613.87 (241.47-5545.1) 47.32
9 6.0290+1.3518x 0.9271 0.34 (0.24-0.69) 11.54 (6.83-20.28) 1.00

Fig. 1

Mutation analysis of resistant population"

Table 2

Resistance level of A. myosuroides populations to pinoxaden, clodinafop-propargyl and fenoxaprop-P-ethyl"

药剂
Herbicide
种群编号
Number of population
回归方程
Regression equation
(y=)
相关系数Correlation coefficient GR50 (g·hm-2)
(95% CL)
GR90 (g·hm-2)
(95% CL)
相对抗性指数
RI
唑啉草酯
Pinoxaden
1 4.6163+1.2066x 0.9429 1.64 (1.01-2.38) 19.63 (15.24-26.10) 1.00
2 4.7433+1.1897x 0.9777 1.87 (1.23-2.56) 19.11 (11.48-26.95) 1.14
3 4.4679+1.3224x 0.9325 2.53 (1.74-3.40) 23.52 (18.61-30.79) 1.54
4 4.4646+1.2843x 0.9502 2.61 (1.81-3.50) 26.00 (20.39-34.45) 1.59
5 4.5855+1.3372x 0.9399 2.04 (1.35-2.82) 18.55 (14.76-24.00) 1.24
6 4.4631+1.3000x 0.9448 2.59 (1.80-3.47) 25.05 (19.72-33.04) 1.58
7 4.3568+1.4520x 0.9436 2.77 (1.97-3.64) 21.16 (17.06-27.00) 1.69
8 4.3950+1.3983x 0.9624 2.71 (1.91-3.58) 22.34 (17.88-28.80) 1.65
9 4.2807+1.4417x 0.9605 3.15 (2.30-4.09) 24.42 (19.60-31.47) 1.92
炔草酯Clodinafop-propargyl 1 4.3066+1.8352x 0.9850 2.39 (1.67-3.14) 11.92 (9.93-14.31) 1.48
2 4.4946+1.8619x 0.9777 1.87 (1.23-2.56) 9.11 (7.48-10.95) 1.16
3 4.5096+1.5318x 0.9777 2.09 (1.40-2.84) 14.35 (11.68-17.81) 1.30
4 4.6245+1.3635x 0.9672 1.89 (1.22-2.63) 16.42 (13.11-20.96) 1.17
5 4.6924+1.4791x 0.9567 1.61 (1.00-2.30) 11.87 (9.54-14.79) 1.00
6 4.6894+1.3348x 0.9451 1.71 (1.07-2.43) 15.59 (12.39-19.95) 1.06
7 4.5763+1.5889x 0.9668 1.85 (1.20-2.56) 11.84 (9.64-14.55) 1.15
8 4.6349+1.6640x 0.9714 1.66 (1.04-2.33) 9.76 (7.91-11.92) 1.03
9 4.6081+1.5914x 0.9655 1.76 (1.13-2.46) 11.26 (9.15-13.83) 1.09
精噁唑禾草灵Fenoxaprop-P-ethyl 1 4.5516+0.8188x 0.9957 3.53 (2.30-5.00) 109.64 (81.12-143.70) 1.19
2 4.5643+0.9184x 0.9905 2.98 (1.96-4.18) 74.12 (50.63-121.29) 1.01
3 4.4032+1.0545x 0.8808 3.68 (2.60-4.91) 60.42 (43.52-91.13) 1.24
4 4.5766+0.8415x 0.9975 3.19 (2.06-4.52) 106.16 (68.36-190.72) 1.08
5 4.3503+1.1587x 0.9857 3.64 (2.62-4.78) 46.42 (34.74-66.17) 1.23
6 4.5167+0.9471x 0.9859 3.24 (2.18-4.47) 73.04 (50.41-117.56) 1.09
7 4.4059+1.0140x 0.8687 3.85 (2.71-5.16) 70.75 (49.89-110.14) 1.30
8 4.4943+1.0737x 0.8882 2.96 (2.03-4.02) 56.20 (33.99-67.46) 1.00
9 4.4054+1.0744x 0.8835 3.58 (2.53-4.77) 55.75 (40.56-82.86) 1.21

Table 3

Weed control efficacy to A. myosuroides after 6 herbicides treated in wheat field (before winter)"

药剂
Herbicide
30 d 冬后拔节期Jointing stage (2018-04-04)
株防效Plant control efficacy (%) 株防效Plant control efficacy (%) 鲜重防效Fresh weight control efficacy (%)
甲基二磺隆Mesosulfuron-methyl 59.1±4.2aA 89.3±2.6bA 88.6±2.6bAB
啶磺草胺Pyroxsulam 56.2±3.5aA 78.4±4.1bA 72.2±2.1bB
氟唑磺隆Flucarbazone-Na 45.9±5.1aA 38.7±2.5cB 16.5±4.6cC
唑啉草酯Pinoxaden 69.0±2.6aA 98.0±0.2aA 98.6±0.2aA
炔草酯Clodinafop-propargyl 67.9±3.2aA 99.2±0.3aA 99.3±0.1aA
精噁唑禾草灵Fenoxaprop-P-ethyl 59.4±2.6aA 96.8±1.0aA 96.2±0.3aA

Table 4

Weed control efficacy to A. myosuroides after 6 herbicides treated in wheat field (after winter)"

药剂
Herbicide
15 d 30 d
株防效Plant control efficacy (%) 株防效Plant control efficacy (%) 鲜重防效Fresh weight control efficacy (%)
甲基二磺隆Mesosulfuron-methyl 51.2±5.2aA 83.2±2.1bB 78.2±2.8cB
啶磺草胺Pyroxsulam 49.2±4.6aA 75.2±1.6cC 68.6±3.2dB
氟唑磺隆Flucarbazone-Na 25.2±3.5bB 19.6±3.2dD 12.5±5.1eC
唑啉草酯Pinoxaden 61.2±4.1aA 92.2±1.5aA 89.1±1.1aA
炔草酯Clodinafop-propargyl 45.2±3.5aA 90.2±1.2aA 87.1±1.2aA
精噁唑禾草灵Fenoxaprop-P-ethyl 42.6±6.2aA 87.6±2.1bB 82.6±1.3bB
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