the correct Kovats retention indices. In tassels of dwarf-1 mutants, GA44,−GA19, GA17, GA20 and the 16,17-dihydro, 7β,16α,17-trihydroxy derivative of ent-kaurenoic acid were identified by GC/MS. Gibberellin A1 was not found in the mutant tassels. [14C]Gibberellin A53 was fed to tassels of the dwarf-5 mutant. In the ethyl acetate-soluble acidic fraction from the feeds, [14C]GA44 was identified by GC/MS;
摘要 重新研究了玉米(Zea mays)流苏中的天然激素。之前通过 GC/SIM 对正常流苏中的 GA1、GA8 和 GA29 进行的鉴定通过在正确的 Kovats 保留指数下进行的全 GC/MS 扫描得到确认。在 dwarf-1 突变体的流苏中,GA44,-GA19, GA17, GA20 和 16,17-dihydro, 7β,16α,17-trihydroxy 衍
生物 ent-kaurenoic acid 被 GC/MS 鉴定。在突变流苏中未发现
赤霉素A1。[14C]
赤霉素A53被喂给dwarf-5突变体的流苏。在进料中可溶于
乙酸乙酯的酸性部分中,[14C]GA44 通过 GC/MS 进行鉴定;[14C]GA19和[14C]GA29通过GC/SIM鉴定。GA29 可能是饲料的代谢物,因为已知 dwarf-5 突变体可以控制玉米 GA
生物合成途径中的 copalyl
焦磷酸转化为 ent-kaurene