Department of Entomology, Haryana Agricultural University HISAR, 125004, India.
J Chem Ecol. 1991 Dec;17(12):2381-95. doi: 10.1007/BF00994589.
The glandular trichome/methyl ketone-mediated insect resistance of the wild tomato,Lycopersicon hirsutum f. glabratum C.H. Mull, accession PI 134417, toManduca sexta (L.) andLeptinotarsa decemlineata (Say) was shown to affect adverselyTrichogramma pretiosum Riley. AdultT. pretiosum were killed by direct contact with PI 134417 foliage and by exposure to its volatiles. This effect was greatly reduced or eliminated by removing the exudate of the glandular trichomes from the foliage. 2-Tridecanone, a principal consituent of the foliar glandular trichomes of PI 134417, was toxic to adultT. pretiosum at concentrations similar to those associated with PI 134417 foliage. Incubation of parasitizedHelicoverpa (=Heliothis) zea (Boddie) eggs on PI 134417 foliage or 2-tridecanone-treated filter paper significantly reduced the proportion of eggs producing adult parasitoids. Similarly, incubation of parasitizedH. zea eggs on filter paper treated with 2-undecanone, another constituent of the glandular trichomes of PI 134417, caused an increase in the percentage of host eggs containing dead parasitoid pupae.
野生番茄 Lycopersicon hirsutum f. glabratum C.H. Mull 腺毛/甲基酮介导的对烟粉虱和马铃薯甲虫的抗虫性，被证明会对赤眼蜂 Trichogramma pretiosum Riley 产生不利影响。成年赤眼蜂直接接触 PI 134417 的叶片或暴露于其挥发物中会死亡。通过从叶片上去除腺毛的分泌物，这种影响大大降低或消除。2-十三烷酮是 PI 134417 叶片上腺毛的主要成分，对成年赤眼蜂具有毒性，其浓度与与 PI 134417 叶片相关的浓度相似。将感染的玉米螟（Helicoverpa (=Heliothis) zea (Boddie)）卵在 PI 134417 叶片或 2-十三烷酮处理的滤纸上孵化，显著降低了产生成虫寄生蜂的卵的比例。同样，将感染的玉米螟卵在处理过 2-十一烷酮的滤纸上孵化，2-十一烷酮是 PI 134417 腺毛的另一种成分，会导致宿主卵中含有死亡寄生蜂蛹的百分比增加。
