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将初孵化幼龄螟虫放在玉米幼株的心叶上,则玉米螟[Ostrinia nubilalis(Hübn)]幼虫死亡率高。残留下来的幼虫生长速率,也低于在较老玉米植株组织取食速率。其原因是玉米植株内有一种或几种有毒物质造成的,测定分析结果,玉米组织中,有三种化学成分,对抗拒螟虫为害起很大作用。抗素甲已经在化学上分离出纯洁晶体,能用人工合成。抗素甲的化学结构定为门布(6MBOA)(6-甲氧基-2(3)-间氮杂氧茚满酮)(6-mthoxy-2(3)-benzoxazolirore)(C_8H_7O_3N_5),当植株生长
Larvae of Ostrinia nubilalis (Hübn) larvae have high mortality when young early stem borers are placed on the heart leaves of young corn plants. The remaining larval growth rate was also lower than the tissue feeding rate in older corn plants. The reason is that corn plants have one or several toxic substances caused by the determination of the results of the analysis, corn tissue, there are three chemical components, against the damage of borers play a big role. Anti-A has been chemically isolated pure crystals, can be synthesized. The chemical structure of ABA is as follows: 6MBOA (6MBOA) (6-mthoxy-2 (3) -benzoxazolirore (C_8H_7O_3N_5) Plant growth