Max Planck Institute for Chemical Ecology, Department of Entomology, Jena, Germany.
Pest Manag Sci. 2010 Aug;66(8):832-8. doi: 10.1002/ps.1949.
The effect of sulfur fertilisation on chemical constituents of yellow rocket, Barbarea vulgaris (R. Br.), was studied with regard to its potential use as a trap crop for the diamondback moth, Plutella xylostella (L.) (Lepidoptera: Plutellidae). Two types of B. vulgaris var. arcuata were used: the G-type, resistant to P. xylostella and proposed as a 'dead-end' trap crop, and the P-type, not resistant to P. xylostella and used as a control.
In G-type B. vulgaris, sulfur fertilisation increased the content of the dominant glucosinolate (S)-2-hydroxy-2-phenylethylglucosinolate by 20%. Sulfur fertilisation did not significantly change levels of the saponins 3-0-beta-cellobiosylhederagenin and 3-0-beta-cellobiosyloleanolic acid, known to act as feeding deterrents for P. xylostella larvae. In P-type B. vulgaris, the same levels of sulfur fertilisation did not change the glucosinolate content significantly. Two-choice oviposition preference tests with B. vulgaris plants showed that P. xylostella laid 144% and 45% more eggs on G- and P-type plants with sulfur fertilisation respectively.
The studies suggest that sulfur fertilisation could increase the effectiveness of G-type B. vulgaris as a trap crop for P. xylostella. The effect of plant sulfur fertilisation on P. xylostella oviposition preference is associated with a quantitative glucosinolate increase, but other compounds could also be involved.
为了研究硫肥对黄矢车菊（Barbarea vulgaris（R. Br.））化学成分的影响，研究了其作为小菜蛾（Plutella xylostella（L.））（鳞翅目：Plutellidae）诱捕作物的潜力。使用了两种类型的黄矢车菊变种：对 P. xylostella 具有抗性的 G 型，被提议作为“死胡同”诱捕作物，以及不抗 P. xylostella 的 P 型，用作对照。
在 G 型黄矢车菊中，硫肥使主要的硫代葡萄糖苷（S）-2-羟基-2-苯乙基硫代葡萄糖苷的含量增加了 20%。硫肥施肥并未显著改变 3-β-半乳糖基芹菜苷元和 3-β-半乳糖基齐墩果酸这两种作为小菜蛾幼虫取食抑制剂的皂苷的水平。在 P 型黄矢车菊中，相同水平的硫肥施肥对硫代葡萄糖苷含量没有显著影响。用黄矢车菊植物进行的双选择产卵偏好测试表明，P. xylostella 在 G-和 P-型植物上分别产卵增加了 144%和 45%。
研究表明，硫肥施肥可以提高 G 型黄矢车菊作为小菜蛾诱捕作物的有效性。植物硫肥施肥对小菜蛾产卵偏好的影响与定量硫代葡萄糖苷增加有关，但也可能涉及其他化合物。
