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Impacts of transgenic Bt cotton on the stylet penetration behaviors of Bemisia tabaci biotype B: Evidence from laboratory experiments
Author(s) -
Yin HaiDi,
Wang XiaoYing,
Xue Kun,
Huang CuiHong,
Wang RongJiang,
Yan FengMing,
Xu ChongRen
Publication year - 2010
Publication title -
insect science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.991
H-Index - 45
eISSN - 1744-7917
pISSN - 1672-9609
DOI - 10.1111/j.1744-7917.2010.01313.x
Subject(s) - biology , phloem , stylet , penetration (warfare) , horticulture , botany , anatomy , operations research , engineering
Stylet penetration behaviors of Bemisia tabaci biotype B on two transgenic cotton lines “GK12” and “GK19” expressing Bt toxic protein Cry1A (Bt cotton) and a non‐Bt conventional cotton line “Simian‐3” (CK cotton) were recorded with the direct current electrical penetration graph (DC‐EPG) technique. Our results suggested that EPG waveform patterns, types and characteristics [non‐probe (NP), pathway (C), potential drops (pd) and phloem phase (E(pd))] of Bemisia tabaci biotype B were very similar on the three cotton lines. There were no obvious differences of pathway variables among whiteflies on the three cotton lines. Some phloem variables related to E(pd) 1 differed. Duration of 1st E(pd) 1 and mean duration of E(pd) 1 on both GK12 and GK19 were significantly shorter than that on CK cotton ( P < 0.05). Fewer whiteflies on GK have long E(pd) 1 . Other phloem variables including total duration of E(pd) summed, mean E(pd) duration and percentage of whiteflies reaching the phloem phase were similar among the three cotton lines.