Cotton Science

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Electrophysiological and behavioral responses of Lygus pratensis to plant volatiles and regulation of Brassica campestris trapping belt on L. pratensis in cotton fields

Xia Xin, Zheng Yixiang, Yao Chengceng, Gou Changqing, Feng Hongzu

Cotton Science, 2023, 35(2): 128-137. DOI: 10.11963/cs20220042

Fig. 6 Occurring number of Lygus pratensis in cotton fields CK: control cotton field. Mean values with the same letters indicate no significant difference (P ≥ 0.05) between insect numbers per 100 plants of investigation points at different distance to rape trapping belt, but different letters indicate significant difference (P < 0.05).

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Table 1 Purity and source of standard chemical pounds
Fig. 1 Field layout diagram
Fig. 2 Selection responses of Lygus pratensis adults to the host plants within 4 hours
Table 2 The name and content list of volatile of host plants
Fig. 3 EAG responses of Lygus pratensis to host plant volatiles 1. methyl salicylate, 2. linalool, 3. trans-2-hexen-1-ol, 4. ocimene, 5. isothiocyanic acid sec-butyl ester, 6. phenylacetaldehyde. Data are means ± standard deviations; different letters indicate significant difference in EAG response of females or males to each volatile (P < 0.05), but same letters indicate no significant difference (P≥ 0.05).
Fig. 4 Behavioral responses of female (A) and male (B) Lygus pratensis to volatiles from six host plants * means significant difference between treatment and control (P < 0.05); ** means extremely significant difference between treatment and control (P < 0.01); ns means no significant difference (P ≥ 0.05).
Fig. 5 Total amount of Lygus pratensis in the rape trapping belts Mean values with the same letters indicate no significant difference (P ≥ 0.05) between insect numbers per 100 plants of different rape trapping belts, but different letters indicate significant difference (P < 0.05).
Fig. 7 Dynamics of Lygus pratensis population in cotton field

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