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Assessment of tomato genotypes against the whitefly, Bemisia tabaci Gennadius (Hemiptera: Aleyrodidae) and Tomato leaf curl virus under controlled condition
International Journal of Tropical Insect Science ( IF 1.2 ) Pub Date : 2024-02-05 , DOI: 10.1007/s42690-024-01167-y
M. K. Ponselvakumari , M. Murugan , C. Chinniah , G. Karthikeyan , J. Ramalingam , A. Beaulah

The tomato leaf curl viruses (ToLCVs) causing tomato leaf curl disease (ToLCD) in tomatoes is one of the significant constraints for tomato production worldwide and is transmitted by the whitefly, Bemisia tabaci. The ToLCVs, with the emergence of several recombinant variants and B. tabaci with changes in its capability in pathogen transmission, are reported all over the Indian subcontinent. Tomato genotypes resistant to B. tabaci and ToLCV are vital for sustainable control of ToLCD. In the current study, the level of resistance/susceptibility of tomato genotypes to B. tabaci and ToLCV incidence under greenhouse conditions were studied, and promising entries were assessed for antixenosis (non-preference) and antibiosis resistance against B. tabaci. Greenhouse screening by mass release of ToLCV-virulent whiteflies revealed that genotypes EC-520,078 and EC-620,389 (p = < 0.0001) recorded highly resistant reactions for whitefly infestation and ToLCV incidence. The adult settling assay revealed that the genotypes EC-520,078, EC-620,389, EC-315,477, and EC-620,401 (p = < 0.0001) were less preferred by whiteflies. Tests on fecundity, nymphal emergence, nymphal development, and population buildup were conducted to infer the antibiosis effect of the tomato genotypes against B. tabaci. The genotype EC-520,078 (p = < 0.0001) recorded the lowest number of eggs, EC-620,389 (p = < 0.0001) with the lowest nymphal emergence, and EC-520,078, EC-620,389, and EC-620,401 (p = < 0.0001) registered the lowest nymphal development. The F2 generation in the population buildup study was significantly lower in EC-520,078, followed by EC-620,389 and EC-631,364 (p = < 0.0001). The identified resistant sources could be used to develop resistant genotypes against whiteflies and ToLCV in tomatoes.



中文翻译:

在受控条件下评估番茄抗粉虱、烟粉虱(半翅目:粉虱科)和番茄卷叶病毒的基因型

引起番茄卷叶病(ToLCD)的番茄卷叶病毒(ToLCV)是全世界番茄生产的重大限制因素之一,由粉虱、烟粉虱传播。 ToLCV,随着几种重组变体的出现和B .据报道,烟粉虱的病原体传播能力发生了变化,遍布印度次大陆。番茄基因型对B具有抗性。烟粉虱和 ToLCV 对于 ToLCD 的可持续控制至关重要。在当前的研究中,番茄基因型对B的抗性/易感性水平。研究了温室条件下烟粉虱和 ToLCV 的发病率,并评估了有希望的条目的抗异种作用(非偏好)和对烟粉虱的抗生素耐药性。烟粉虱。通过大量释放 ToLCV 强毒粉虱进行的温室筛查显示,基因型 EC-520,078 和 EC-620,389 (p = < 0.0001) 记录了粉虱侵染和 ToLCV 发病率的高度耐药反应。成虫沉降试验显示,基因型 EC-520,078、EC-620,389、EC-315,477 和 EC-620,401 (p = < 0.0001) 不太受粉虱青睐。对繁殖力、若虫出现、若虫发育和种群积累进行测试,以推断番茄基因型对芽孢杆菌的抗菌作用烟粉虱。基因型 EC-520,078 (p = < 0.0001) 记录的卵数最低,EC-620,389 (p = < 0.0001) 记录的若虫出现最少,EC-520,078、EC-620,389 和 EC-620,401 (p = < 0.0001)记录了最低的若虫发育。 EC-520,078 中群体构建研究中的 F2 代显着较低,其次是 EC-620,389 和 EC-631,364 (p = < 0.0001)。已确定的抗性来源可用于开发番茄中针对粉虱和 ToLCV 的抗性基因型。

更新日期:2024-02-06
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