卷心菜蚜虫,芸苔属植物(Hem:蚜科),是世界上最严重的油菜害虫之一。在这项研究中,恶臭假单胞菌的影响,水杨酸(SA),并研究了两种诱导剂的综合应用对油菜对油菜的抗性。在自由选择的情况下,与对照植物相比,在含有P.putida和SA的处理下,在油菜植物上吸引的油菜芽孢杆菌的数量显着降低。在生命表研究中,成年前的生存,长寿,生育期,在用P.putidaSA处理的植物中,该蚜虫的繁殖力最低。净繁殖率(R0),人口内在增长率(r),油菜芽孢杆菌的有限增加率(λ)按以下顺序显著下降:对照(47.19后代,0.293和1.340天-1),P.putida(16.7个后代,0.238和1.269天-1),SA(6.37个后代,0.163和1.178天-1),和P.putida+SA(3.24后代,0.112和1.119天-1)。此外,在我们的研究中,P.putida和SA的综合应用对植物生长参数的有益作用显着。芥子油苷的最高值,总酚,并在恶臭假单胞菌+SA处理中记录类黄酮。我们得出的结论是,用P.putidaSA处理的油菜植物对卷心菜蚜虫的抗性更强。这些发现表明,在油菜植物上与P.putida整合的SA有效地减少了油菜的种群,并可用于该害虫的综合管理计划。
The cabbage aphid, Brevicoryne brassicae L. (Hem: Aphididae), is one of the most serious pests of canola worldwide. In this research, the effects of Pseudomonas putida, salicylic acid (SA), and integrated application of both inducers were studied on the resistance of canola to B. brassicae. In free-choice situation, the number of B. brassicae attracted on canola plants under treatments containing P. putida and SA was significantly lower compared to control plants. In the life table study, pre-adult survival, longevity, reproductive period, and fecundity of this aphid were lowest on plants treated with P. putida + SA. The net reproductive rate (R0), intrinsic rate of population increase (r), and finite rate of increase (λ) of B. brassicae decreased significantly in the following order: control (47.19 offspring, 0.293 and 1.340 day-1), P. putida (16.7 offspring, 0.238 and 1.269 day-1), SA (6.37 offspring, 0.163 and 1.178 day-1), and P. putida + SA (3.24 offspring, 0.112 and 1.119 day-1). Moreover, the beneficial effect of the integrated application of P. putida and SA on plant growth parameters was significantly evident in our study. The highest values of glucosinolates, total phenol, and flavonoids were recorded in P. putida + SA treatment. We concluded that canola plants treated with P. putida + SA are more resistant to the cabbage aphid. These findings demonstrated that SA integrated with P. putida on canola plants act effectively for reducing the population of B. brassicae and can be used in integrated management programs of this pest.