论文部分内容阅读
采用模拟的方式,利用生物测定和室内培养的方法,研究了不同浓度的己二酸二异丁酯对辣椒种子萌发、幼苗生长及辣椒枯萎菌的化感效应。结果表明:己二酸二异丁酯对辣椒种子萌发和幼苗生长具有低浓度促进、高浓度抑制的化感效应;己二酸二异丁酯对辣椒和茄子种子的化感效应存在较大差异,在低浓度时对辣椒种子萌发和幼苗生长的促进作用强于茄子种子,而高浓度时对辣椒种子萌发和幼苗生长的抑制强度弱于茄子种子;各浓度己二酸二异丁酯对辣椒枯萎菌菌丝生长有极显著的抑制作用,且作用强度随着浓度增加而增强,当浓度为1mnol.L-1时抑制作用最强,抑制率为10.75%;在田间抗病性调查期间内各浓度处理均提高了辣椒幼苗的抗病性,其中以1mmol.L-1处理抗病性最好,病情指数比对照降低了49.88%。
By means of simulation, the effects of different concentrations of diisobutyl adipate on the seed germination, seedling growth and the Fusarium oxysporum f. Sp. Were studied by means of bioassay and in-house culture. The results showed that diisobutyl adipate had a low allelopathic effect on the seed germination and seedling growth of pepper and the allelopathic effect was inhibited by high concentration. The allelopathic effect of diisobutyl adipate on seeds of pepper and eggplant was significantly different , The promotion effect on seed germination and seedling growth of pepper was stronger than that of eggplant seed at low concentration, while the inhibitory strength of pepper seed germination and seedling growth was weaker than that of eggplant seed at high concentration; Butyl adipate Fusarium oxysporum mycelial growth has a very significant inhibitory effect, and the intensity increased with increasing concentration, when the concentration of 1mnol.L-1, the strongest inhibitory effect, the inhibition rate was 10.75%; in the field during the disease resistance survey All the treatments increased the disease resistance of pepper seedlings. Among them, the treatment with 1 mmol.L-1 had the best disease resistance index, and the disease index decreased by 49.88% compared with the control.