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以茄子黄萎病为研究对象,采用在营养钵中施加不同浓度Ca(NO3)2(80、120、160、200 mg·L-1)的方法,研究了不同浓度Ca(NO3)2对茄子黄萎病抗性、茄子幼苗生长以及生理指标的影响。结果表明:与清水对照相比,不同浓度的Ca(NO3)2均能降低茄子黄萎病的发病率和病情指数,促进茄子幼苗生长,提高相关抗性生理指标;其中Ca(NO3)2的最佳作用浓度为160 mg·L-1;与清水对照相比,茄子幼苗的株高、茎粗、地上鲜重、地下鲜重分别增加了32%、22%、93%和114%,叶绿素含量和根系活力分别提高了35%和63%,相对电导率和丙二醛分别降低了51%和54%,3种防御酶PAL、PPO和POD的活性分别增加了60%、721%和144%。
With eggplant Verticillium wilt disease as the research object, different concentrations of Ca (NO3) 2 (80, 120, 160, 200 mg · L-1) Verticillium wilt resistance, growth of eggplant seedlings and physiological indexes. The results showed that different concentrations of Ca (NO3) 2 could reduce the incidence of disease and disease index of eggplant Verticillium wilt, promote the growth of eggplant seedlings and enhance the physiological indexes of resistance; Ca (NO3) 2 The optimal concentration was 160 mg · L-1. Compared with the control, the plant height, stem diameter, above-ground fresh weight and underground fresh weight of eggplant seedlings increased by 32%, 22%, 93% and 114% Content and root activity increased by 35% and 63%, relative conductivity and malondialdehyde decreased by 51% and 54% respectively, activity of three defense enzymes PAL, PPO and POD increased by 60%, 721% and 144% %.