Ikram Mohd, Shariq Mohammad, Khan Faryad, Khan Arshad, Fatima Saba, Siddiqui Mansoor A
Section of Plant Pathology and Nematology, Department of Botany, Aligarh Muslim University, Aligarh 202002, India.
Bioinformation. 2022 Apr 30;18(4):354-363. doi: 10.6026/97320630018354. eCollection 2022.
Tomato plant is affected by several pathogens, including root-knot nematodes (RKNs), belonging to the genus Meloidogyne. Meloidogyne incognita is among the most potent pests infecting tomato roots. Therefore, it is of interest to discuss the management of Meloidogyne incognita using selected botanicals such as Cammelina benghalensis, Evolvulus nummularius, Gomphrena celosioides, Lindenbergia indica, Scoparia dulcis and Vernonia cinerea. The second-stage juveniles (J2s) of M. incognita were directly treated with the aqueous extracts of the botanicals at varied concentration ranging from 10-100%. 100% concentration of Lindenbergia indica was found to be the most toxic against the survival of J2s of M. incognita as compared to other concentrations. In vitro tests also showed the maximum inhibition in egg hatching at 100% concentration after seven days in the extract of Lindenbergia indica. Moreover, botanicals significantly reduced the infestations in relation to number of root galls, eggmasses/root and nematode population/250 g soil in pots. The plant treated with Scoparia dulcis leaves showed the highest nematicidal efficacy with maximum reductions in all the pathological parameters as compared to the untreated control. All treatments resulted in increased growth, physiological parameters and decreased pathological parameters of tomato.
番茄植株受到多种病原体的影响，包括根结线虫（RKNs），属于根结线虫属。南方根结线虫是感染番茄根系的最具危害性的害虫之一。因此，讨论使用选定的植物提取物如孟加拉亚麻荠、圆叶旋花、千日红、印度钓钟柳、甜杆草和灰斑鸠菊来防治南方根结线虫是很有意义的。将南方根结线虫的二期幼虫（J2s）直接用不同浓度（10%-100%）的植物提取物处理。与其他浓度相比，发现100%浓度的印度钓钟柳对南方根结线虫J2s的存活毒性最大。体外试验还表明，印度钓钟柳提取物在100%浓度下，七天后对卵孵化的抑制作用最大。此外，植物提取物显著减少了盆栽中根瘤数量、卵块/根和线虫种群/250克土壤的侵染情况。与未处理的对照相比，用甜杆草叶片处理的植株显示出最高的杀线虫效果，所有病理参数均有最大程度的降低。所有处理均导致番茄生长、生理参数增加，病理参数降低。
