尿囊素的合成及其对作物的生化他感作用

Synthesis of the Auantoin and Its Alleopathic Effects on Crops

本文通过乙醛酸和尿素反应人工合成尿囊素，以及对小麦、水稻、萝卜、番茄、黄瓜和大豆等作物的生化他感作用。研究表明：尿囊素对作物的生化他感作用与其浓度有直接关系，１０ｍｍｏｌ／Ｌ浓度对所有受体均表现出强烈的抑制作用，特别是水稻和萝卜种子的萌发完全被抑制。降低浓度则有不同结果，其中对小麦、黄瓜、番茄、萝卜均表现抑制作用，而水稻，尤其是大豆在中低浓度表现为促进作用。进一步对大豆、绿豆和红豆等豆料作物的研究证实：尿囊素对大豆和红豆的幼苗生长均有促进作用，尤其在０．５ｍｍｏｌ／Ｌ浓度时最为显著。

lt is reported that allantoln can be synthetised with glyoxalic acid and urea,and itsalielopatlic effects on wheat ,rice,radish,tomato,cucumber and scybean is otherved.It showedthat allelopathic effects of allantoin on cropo is related to concentration,High concentration in-hibited the seedling growth of the acceptor plants,especialy inhibited the seedling growth of riceand radish up to 100%.Low concentration of the allantoin prolnpted the seedling growth of riceaIld soybean,espercially soybean.Investigations of soybean,redbean and mungbean treated withallantoin reveal that soybean and redbean are prompted obviously in 0.5mmol/L concentration.