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Effects of putrescine on diapause induction and intensity, and post‐diapause development of Helicoverpa armigera
Author(s) -
Wu ShengBing,
Wang ManQun,
Zhang Guoan
Publication year - 2010
Publication title -
entomologia experimentalis et applicata
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.765
H-Index - 83
eISSN - 1570-7458
pISSN - 0013-8703
DOI - 10.1111/j.1570-7458.2010.01012.x
Subject(s) - diapause , helicoverpa armigera , biology , lepidoptera genitalia , putrescine , noctuidae , photoperiodism , pest analysis , pupa , helicoverpa , botany , larva , horticulture , biochemistry , enzyme
Effects of putrescine on diapause induction and intensity, and post‐diapause development in Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) from Wuhan, Hubei, China were studied in the laboratory at different temperatures and photoperiod conditions. The results showed a generally higher incidence of diapause in putrescine‐feeding groups. Putrescine feeding distinctly restricted the development of non‐diapause‐destined and diapause‐destined larvae, except at 0.01% putrescine concentration, which accelerated the development of larvae at 21 °C. Putrescine had no significant effect on the duration of diapause, although it inhibited the post‐diapause development of pupae. Photoperiod played a different role in diapause induction and post‐diapause development between 21 and 23 °C. Putrescine played a definite role in diapause induction and intensity, and post‐diapause development in H. armigera , and a significant interaction between putrescine, photophase, and temperature is to be expected.