On the induced disease-resistance by beta -aminonbutyric acid

DL-β-aminobutyric acid(BABA) is a wide-range induced resistance chemical componment for plant to protect from being harmed by diseases,which is excellent way to research and develop those amino acid pesticides.A study on BABA and its preparations to induce resistance to TMV,CMV,Phytophthora capsici PC48,Xanthormonas vesicatoris(Boidge)Dowson and Me1oidogyne incognita(Kofoid and white) Chitwood on pepper and tomato in temperate room and to Peronospora parasitica on cabbage in outer room was conducted.The results showed that when BABA was sprayed to pepper plants,the induced resistance to a challenge infection with tobacco mosaic virus(TMV) and cucumber mosaic virus(CMV) could produced.The effects of induced resistance were effected by concentrations of inducers.The highest effect of induced resistance can reach more than fifty percent.TMV developed slowlier in treated pepper plants than in the untreated which suggests that the induced resistance in pepper plants may be more quantitative rather than quantitative.The induced effect of 10% BABA was better than that of the pure BABA.The induced resistance to pepper Phytophthora capsici was kept 88% after the pesticide was used for ten days.The induced resistance Peronospora parasitica on cabbage was better than other usual pesticides.BABA’s development matter also showed a good potential induced resistance ability to TMV,CMV,Phytophthora capsici and Me1oidogyne incognita.