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

化合物 Volatile compound	相对含量Relative content/%
化合物 Volatile compound	A	B	C	D	E
壬醛Nonanal	―	―	―	0.21	0.08
二甲基三硫Dimethyl trisulfide	―	―	―	―	31.49
异硫氰酸仲丁酯Isothiocyanic acid sec-butyl ester	―	―	―	―	4.12
二甲基四硫醚Dimethyl tetrasulfide	―	―	―	―	23.63
2-己烯醛2-Hexenal	―	30.93	61.40	38.93	0.84
2, 6, 10-三甲基十四烷2, 6, 10-trimethyl tetradecane	―	0.31	―	0.10	0.19
苯乙醛Benzeneacetaldehyde	―	0.17	―	―	0.18
水杨酸甲酯Methyl salicylate	―	0.73	―	―	0.16
(±)-3-羟基月桂酸3-hydroxy dodecanoic acid	―	―	―	―	0.03
3-己烯-1-醇3-hexen-1-ol	0.93	―	―	19.22	―
正己醛Hexanal	0.28	0.44	6.39	8.55	―
顺-2-己烯-1-醇 (Z)-2-hexen-1-ol	―	10.87	―	2.07	―
芳樟醇Linalool	―	―	―	0.32	―
罗勒烯Ocimene	28.05	―	0.22	0.60	―
二十碳五烯酸cis-5, 8, 11, 14, 17-eicosapentaenoic acid	0.03	―	―	0.07	―
反式-2-己烯-1-醇Trans-2-hexen-1-ol	2.77	―	4.28	―	―
1-戊烯-3-酮1-penten-3-one	―	―	0.37	―	―
2, 4, 6-三甲基-癸烷2, 4, 6-trimethyl decane	―	0.15	0.11	―	―
1-戊烯-3-醇1-penten-3-ol	0.24	0.31	―	―	―
1, 4-戊二烯1, 4-pentadiene	0.14	0.08	―	―	―
17-十八炔酸17-octadecynoic acid	―	0.06	―	―	―
β-蒎烯β-pinene	37.48	―	―	―	―
丁香烯Humulene	0.53	―	―	―	―
1-癸炔1-decyne	0.07	―	―	―	―
α-水芹烯α-phellandrene	0.15	―	―	―	―

Table 2 The name and content list of volatile of host plants

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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
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. 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).
Fig. 7 Dynamics of Lygus pratensis population in cotton field

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