Resistance of Citrus and Related Genera to Diaphorina citri Kuwayama (Hemiptera: Liviidae)

Abstract

The present study was developed to evaluate the resistance of the following genotypes of Citrus and related genera to this pest: 'Pera,' 'Natal', and 'Washington Navel' oranges (Citrus sinensis), 'Marsh Seedless' grapefruit (Citrus paradisi), hardy orange 'Rubidoux' (Poncirus trifoliata), kumquat (Fortunella margarita Swingle), citrumelo 'Swingle' (C. paradisi x P. trifoliata), and citrange 'Troyer' (P. trifoliata x C. sinensis). The experiments were performed in greenhouses with plants grafted onto 'Rangpur' lime (Citrus limonia) and placed individually in voile cages. The preference for oviposition in a no-choice test, and the effect of genotype were evaluated. The egg-adult cycle was monitored to determine the effect of genotype on the biology of the insect. Poncirus 'Rubidoux' was the least preferred genotype for oviposition; reduced number of eggs was also found to occur on citrange 'Troyer', and 'Marsh Seedless' was the genotype with the most eggs. No significant variation in the duration of the embryonic period was observed; however, a difference in the viability of eggs was found, with the lowest egg viabilities on 'Swingle.' Kumquat and 'Marsh Seedless' genotypes were correlated with increased durations of the nymphal phase, however, there was no difference in the survival of this phase. Fecundity of females on 'Troyer', 'Swingle', and kumquat was reduced. Considering all of the evaluated parameters, it was concluded that cultivars of sweet orange are the most susceptible genotypes to Diaphorina citri. Regarding oviposition, P. trifoliata 'Rubidoux' showed resistance of the antixenosis type.

Attractiveness of Host Plant Volatile Extracts to the Asian Citrus Psyllid, Diaphorina citri, is Reduced by Terpenoids from the Non-Host Cashew

“…Tolerant to HLB under greenhouse conditions (Folimonova et al 2009), this genotype did not favour adult populations under field conditions, but it is highly colonized by nymphs (Westbrook et al 2011). In the present work, P. trifoliata was not found to be an attractive host, corroborating studies by Westbrook et al (2011) under field conditions, who reported a low colonization rate on P. trifoliata accessions and Borgoni et al (2014), who observed a low oviposition in this genotype under greenhouse conditions. There is evidence that selections obtained from this genotype may present differences on the degree of susceptibility to the insect but, besides that, this species might contribute to citrus breeding programs aimed at delivering resistance to D. citri .…”

“…To test the hypothesis that host volatile blends impact D. citri host seeking behaviour, interactions between D. citri and volatiles collected from a range of suitable, unsuitable, and non-host plants were studied. M. paniculata and sweet orange, C. sinensis (L.) Osbeck were selected as most attractive host plants (Ikeda and Ashihara 2008; Patt and Sétamou 2010; Borgoni et al 2014), with C. reshni , C. limettioides, and P. trifoliata being selected as less attractive hosts (Tsagkarakis and Rogers 2010; Westbrook et al 2011). Previous work reported that guava, Psidium guajava L. (Myrtaceae), leaves and volatiles repel D. citri and hamper location of Rangpur (lemandarin), C. limonia Osbeck (Rouseff et al 2008; da Silva et al 2016; Zaka et al 2010).…”

Unsuitability of indigenous South American Rutaceae as potential hosts of Diaphorina citri

“…Within the Aurantioideae, the high suitability of B. koenigii , Citrus × aurantium , ‘ Citrus limonia ’ and M. paniculata as hosts of the psyllid, and the lower favorability of Citrus wintersii , Citrus trifoliata , Clausena lansium and S. glutinosa were confirmed. In general, the more suitable a host was for development of the psyllid, the more suitable it was for longevity of adult psyllids regardless of leaf age.…”

Efeitos de variedades citricas sobre o vetor das bactérias associadas ao Huanglongbing (HLB) <i>Diaphorina citri </i>Kuwayama, 1908 (Hemiptera: Liviidae)

“…Dentre os aspectos que afetam o inseto, um dos primeiros é o processo de busca e aceitação do hospedeiro para alimentação e oviposição, no qual o inseto procura a planta mais adequada, baseando-se em sinais visuais e químicos presentes nas plantas (VET;DICKE, 1992;MORAES;LEWIS;TUMLINSON, 2000; NEHRU et al, 2004;TSAGKARAKIS;ROGERS, 2010;WESTBROOK et al, 2011;BORGONI et al, 2014;SETÁMOU;, e também sobre variedades de uma mesma espécie de citros . Tal fato pode ser utilizado no desenvolvimento de estratégias de manejo de insetos praga.…”

“…Um grande número de trabalhos relata o desenvolvimento diferencial de D. citri em função de diferentes hospedeiros/espécies NEHRU et al, 2004;TSAGKARAKIS;ROGERS, 2010;WESTBROOK et al, 2011;BORGONI et al, 2014), e também sobre variedades de uma mesma espécie de citros ; no entanto, pouco se sabe sobre o efeito de diferentes combinações de copa e porta-enxerto de citros no desenvolvimento de D. citri.…”