Assessing the resistance of passion fruit genotypes as control method to Tetranychus mexicanus

• Published in: Crop protection Vol. 128; p. 104990
• Main Authors: da Silva, Paulo Roberto, dos Santos, Carlos Eduardo Magalhães, da Silva, Ricardo Siqueira, da Silva, Ézio Marques, Lopes, Mayara Cristina, da Silva Paes, Jhersyka, Picanço, Marcelo Coutinho
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01-02-2020
• Subjects: Antibiosis; Antixenosis; Mexican mite; Passiflora edulis; Antixenosis; Passiflora edulis; Mexican mite; Antibiosis
• ISSN: 0261-2194; 1873-6904
• DOI: 10.1016/j.cropro.2019.104990

Tetranychus mexicanus (McGregor) (Acari: Tetranychidae) is one of the most significant pests that affect passion fruit in America. One way to reduce pesticides application is management using resistant plants as one of the highlights of integrated pest management programs. The first step to obtaining commercial pest-resistant cultivars is the selection of resistant plant genotypes in the breeding programs of plants. Thus, this study aimed to utilize preference and performance responses of T. mexicanus in different passion fruit genotypes to determine the resistance to T. mexicanus. To identify antixenosis and antibiosis resistance, we evaluated the T. mexicanus preference and a life table experiment was conducted recording developmental time, survival, reproductive output, and longevity of T. mexicanus for the 25 genotypes. A total of 9 genotypes were the least preferred by the T. mexicanus and, thus were classified as the most resistant to this mite by the antixenosis mechanism. The genotype 4 was the one the affected the mite most negatively, reducing the females' longevity while a total of 14 genotypes were affected most negatively the fecundity of the mites. Therefore, we determined that the genotype 4 exhibits resistance trough antixenosis and antibiosis to the T. mexicanus and, thus, can be used as a source of resistance to this mite while seeking the production of cultivars resistant to this pest.
•The resistance of passion fruit genotypes to Tetranychus mexicanus.•Preference and performance responses of T mexicanus in different passion fruit genotypes.•A total of 9 genotypes were the least preferred by the T. mexicanus.•Genotype 4 exhibits resistance trough antixenosis and antibiosis to the T. mexicanus.