Table 1.
Presence and absence of the Ser59Gly mutation in surveyed field populations from South China
| Population | Location | Resistance status | No. of plants analysed | No. of plants with genotype of EiGS1-1 | |
|---|---|---|---|---|---|
| Ser59 (WT) | Gly59 (mutant) | ||||
| S1 | Fallow field, Guangzhou, China (22°8ʹN, 113°44ʹE) | S | 15 | 15 | |
| P1 | Baiyun, Guangzhou, China (23°35ʹN, 113°39ʹE) | R | 18 | 6 | 12 |
| P2 | Panyu, Guangzhou, China (22°8ʹN, 113°44ʹE) | r | 15 | 14 | 1 |
| P3 | Huadu, Guangzhou, China (23°48ʹN, 113°36ʹE) | r | 18 | 17 | 1 |
| P4 | Sanshui, Foshan, China (23°48ʹN, 112°9ʹE) | r | 15 | 14 | 1 |
| P5 | Yangcun, Huizhou, China (23°48ʹN, 114°46ʹE) | r | 12 | 12 | |
| P6 | Jianggao, Guangzhou, China (23°33ʹN, 113°23ʹE) | S | 9 | 9 | |
| P7 | Xiangang, Zhaoqing, China (23°04ʹN, 112°64ʹE) | S | 10 | 10 | |
| P8 | Boluo, Huizhou, China (23°52ʹN, 114°56ʹE) | S | 15 | 15 | |
| P9 | Maoming, China (21°68ʹN, 110°88ʹE) | S | 8 | 8 | |
| P10 | Mazhang, Zhanjiang, China (21°27ʹN, 110°3ʹE) | S | 6 | 6 | |
| P11 | Qigong, Yangshan, China (24°32ʹN, 112°63ʹE) | S | 11 | 11 | |
| P12 | Jiutan, zengcheng, China (23°11ʹN, 113°58ʹE) | S | 17 | 17 | |
| P13 | Cenxi, Guangxi, China (23°03ʹN, 111°03ʹE) | S | 13 | 13 | |
| P14 | Yulin, Guangxi, China (22°43ʹN, 110°07ʹE) | S | 8 | 8 | |
| P15 | Sanya, Hainan, China (23°42ʹN, 109°28ʹE) | S | 14 | 14 | |
| P16 | Lingshui, Hainan, China (18°51ʹN, 110°04ʹE) | S | 16 | 16 | |
| P17 | Wenchang, Hainan, China (19°61ʹN, 110°72ʹE) | S | 11 | 11 | |
| P18 | Qionghai, Hainan, China (19°25ʹN, 110°47ʹE) | S | 13 | 13 | |
R, r, and S refer to populations that had >50%, 1–10%, and 0% plant survivors, respectively, when treated with glufosinate at the rate (990 g ha−1) that fully controls the susceptible (S1) population. The r populations have zero to low frequency of the mutation, suggesting non-target site resistance mechanisms.