ISSN:
1570-7458
Keywords:
Trichoplusia ni
;
Glycine max
;
Phaseolus lunatus
;
volatiles
;
plant resistance
;
Tenax®-trapping
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Volatiles from different plants may have quite distinct effects on insect behaviors, i.e., attraction, repulsion or neutrality. Our study used Tenax® to trap volatiles from plants at room temperature, and assayed female adult Trichoplusia ni's (Lepidoptera: Noctuidae) responses to such volatiles. The results showed that volatiles from PI 227687 soybean leaves were repellent to T. ni, while those from ‘Davis’ soybean were attractive to the moth, and those from an unnumbered PI soybean had no significant behavioral effect. Odors from ‘Henderson’ lima bean, one of the more preferred hosts of T. ni, also did not influence the insect's behavior. The HPLC, GLC and GLC-MS analyses indicated that qualitative and quantitative differences among volatiles from plant species, varieties or plant introductions account for these effects. The attractive volatiles from ‘Davis’ soybean contain much more 4-hexen-1-ol acetate, 2,2-dimethyl hexanal and 2-hexenal than those of PI 227678, but do not have the repellent tetradecene and dodecene which are major components in PI 227687 soybean odors. The composition of the ‘neutral’ volatiles from ‘Henderson’ lima bean is more complex than that of the volatiles from soybeans.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00188243
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