Rapeseed contains high levels of glucosinolates (GSLs), playing pivotal roles in defense against herbivores and pests. As their presence in rapeseed reduces the value of the meal for animal feeding, intensive efforts to reduce them produced low-seed GSL cultivars. However, there is no such variety suitable for the south part of Japan. Here, we tested the effects of cold oxygen plasma (oxygen CP) on seed germination and GSL and lipid content, in 3 rapeseed cultivars. According to the cultivars, oxygen CP slightly stimulated seed germination and modified the GSL levels, and decreased GSL levels in Kizakinonatane but increased those in Nanashikibu. In contrast, it negligibly affected the lipid content and composition in the 3 cultivars. Thus, oxygen CP modulated seed GSL levels without affecting seed viability and lipid content. Future optimization of this technique may help optimize rapeseed GSL content without plant breeding.

中文翻译：

---

氧血浆调节硫代葡萄糖苷水平而不影响欧洲油菜种子中的脂质含量和组成。

油菜籽含有高水平的硫代葡萄糖苷 (GSL)，在防御食草动物和害虫方面发挥着关键作用。由于它们在油菜籽中的存在降低了饲料对动物饲料的价值，因此努力减少它们产生了低种子 GSL 品种。但是，没有适合日本南部的这种品种。在这里，我们测试了冷氧等离子体（氧 CP）对 3 个油菜品种的种子萌发和 GSL 和脂质含量的影响。根据栽培品种，氧 CP 略微刺激种子萌发并改变 GSL 水平，降低 Kizkinonatane 的 GSL 水平，但增加 Nanashikibu 的 GSL 水平。相比之下，它对 3 个品种的脂质含量和组成的影响可以忽略不计。因此，氧 CP 调节种子 GSL 水平而不影响种子活力和脂质含量。