Hsu Yu-Tzu, Shen Tse-Chi, Hwang Shaw-Yhi
Department of Entomology, National Chung Hsing University, Taichung, Taiwan 402.
J Econ Entomol. 2009 Feb;102(1):160-9. doi: 10.1603/029.102.0123.
The objective of this study was to assess the effect of fertilization (organic or synthetic) and cabbage, Brassica oleracea L., cultivars ('K-Y cross' and 'Summer Summit') on the chemistry of cabbage and on the responses of a cabbage specialist Pieris rapae crucivora Boisduval. Cabbages were grown from seeds in the greenhouse with either organic, synthetic, or no fertilizer treatments. Trials of ovipositional preference and larval feeding were conducted to evaluate the effect of foliage quality on insect responses. In addition, the foliar chemistry (water, nitrogen, total nonstructural carbohydrates, sinigrin, and anthocyanin) was measured during the insect bioassays. The results indicated that butterflies preferred to lay eggs on foliage of fertilized plants. The larvae grew faster on plants fertilized with synthetic fertilizer, but there was no evidence that contents of sinigrin delayed the developmental time of the larvae. However, plants that received organic fertilizer had higher biomass. In summary, the results of this study suggested that proper organic treatment can increase a plant's biomass production and may have a lower pest occurrence.
本研究的目的是评估施肥（有机或合成肥料）以及甘蓝品种（‘K-Y杂交种’和‘夏季顶峰’）对甘蓝化学成分以及甘蓝专食性害虫菜粉蝶（Pieris rapae crucivora Boisduval）反应的影响。甘蓝种子在温室中种植，设置有机肥料、合成肥料或不施肥处理。进行了产卵偏好试验和幼虫取食试验，以评估叶片质量对昆虫反应的影响。此外，在昆虫生物测定期间测量了叶片化学成分（水分、氮、总非结构性碳水化合物、黑芥子硫苷和花青素）。结果表明，蝴蝶更喜欢在施肥植物的叶片上产卵。幼虫在施用合成肥料的植物上生长更快，但没有证据表明黑芥子硫苷含量会延迟幼虫的发育时间。然而，施用有机肥料的植物生物量更高。总之，本研究结果表明，适当的有机处理可以增加植物的生物量产量，并且可能降低害虫发生率。
