Factors of resistance in tomato accessions against the fruit worm, Helicoverpa armigera (Hubner)

Selvanarayanan, V.; Narayanasamy, P.

doi:10.1016/j.cropro.2006.02.008

Cited by 28 publications

(23 citation statements)

References 7 publications

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“…(Simmons et al, 2004); LA-716 e LA-1777 (S. habrochaites var. hirsutum) (Talekar et al, 2006); em acessos de S. lycopersicum; e num híbrido de tomateiro com S. pimpinellifolium (Selvanarayanan & Narayanasamy, 2006). Todos esses genótipos apresentavam alta densidade de tricomas glandulares.…”

Section: Resultsunclassified

“…Tal como aqui observado, houve menor preferência das lagartas H. armigera de se alimentar de genótipos de tomateiro PT-4287 e 'Seijima Jeisei' (S. lycopersicum) e do híbrido 'Varushanadu' (S. lycopersicum x S. pimpinellifolium) -igualmente associados à alta densidade de tricomas glandulares do tipo VI e maiores teores foliares de ortodihidroxifenóis -, em comparação a uma cultivar comercial de tomateiro (Selvanarayanan & Narayanasamy, 2006). A antixenose foi observada em lagartas Spodoptera frugiperda (Smith) e S. eridania (Cramer) (Lepidoptera: Noctuidae), em acessos de tomateiro PI 134417, PI 134418 (S. hirsutum var.…”

Section: Resultsunclassified

“…Fontes de resistência à H. armigera já foram relatadas em acessos das espécies Solanum pennellii, S. habrochaites e S. pimpinellifolium (Simmons et al, 2004;Selvanarayanan & Narayanasamy, 2006;Talekar et al, 2006;Safuraie-Parizi, et al, 2014;Muthukumaran, 2016). Além dessas, alguns acessos de S. galapagense, apesar de ainda não terem sido documentados como resistentes à H. armigera, são promissores, pois apresentam altos níveis de resistência a outros insetos que atacam o tomateiro, associados com a alta densidade de tricomas glandulares do tipo IV e à elevada concentração foliar do aleloquímico acilaçúcar (Jouy et al, 1992;Simmons & Gurr, 2005;Firdaus et al, 2013;Lucatti et al, 2013;Andrade, 2015).…”

Section: Introductionunclassified

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Resistência à Helicoverpa armigera em genótipos de tomateiro obtidos do cruzamento de Solanum lycopersicum com Solanum galapagense

Silva

Andrade

Carvalho

et al. 2016

Pesq. agropec. bras.

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Resumo: O objetivo deste trabalho foi verificar a resistência à lagarta Helicoverpa armigera (Lepidoptera: Noctuidae), em genótipos de tomateiro obtidos do cruzamento interespecífico de Solanum lycopersicum x S. galapagense, e a associação dessa resistência com a densidade de tricomas glandulares do tipo IV. Genótipos da população F2, derivada do cruzamento S. lycopersicum TOM-684 x S. galapagense LA-1401, selecionados quanto à baixa e à alta densidade de tricomas glandulares, respectivamente, foram submetidos a dois testes de resistência à lagarta H. armigera em laboratório, um de antibiose e outro de antixenose. Os genótipos da população F2, com alta densidade de tricomas glandulares do tipo IV (BPX-486-17, BPX-486-62, BPX-486-10, BPX-486-46 e BPX-486-08), apresentam maiores níveis de resistência, tanto por antibiose quanto por antixenose, do que os genótipos com baixa densidade de tricomas glandulares (BPX-486-313 e BPX-486-383) e do que as testemunhas 'Santa Clara' e TOM-684. Os níveis de resistência foram menores do que os do genitor silvestre LA-1401.

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Section: Resultsunclassified

Section: Introductionunclassified

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Resistência à Helicoverpa armigera em genótipos de tomateiro obtidos do cruzamento de Solanum lycopersicum com Solanum galapagense

Silva

Andrade

Carvalho

et al. 2016

Pesq. agropec. bras.

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“…Mishra et al (1988) reported that tomato genotypes with tight mesocarp and hard pulp of fruits are resistant. Selvanarayanan and Narayanasamy (2006) reported that trichome density in the foliage is the indication of resistant. The BARI Tomato-7 was found moderately susceptible, may be due to the reason of high nitrogen content, which accord with the findings of Minkenberg and Ottenheim (1990).…”

Section: Discussionmentioning

confidence: 99%

Screening of tomato varieties against tomato fruit borer and associated plant characters

et al. 2017

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Ten tomato varieties were evaluated to find out their level of resistance against tomato fruit borer Helicoverpa armigera Hubner (Lepidoptera: Noctuidae) under field conditions. The abundance of fruit borer larvae and their infestation, plant morphological characters, nitrogen content, yield and seed germination of the varieties were studied. The varieties differed in their leaf thickness, trichome density, rind thickness and nitrogen content. The fruit borer larval abundance and fruit infestation among the varieties varied significantly. Five varieties namely BARI Tomato-1, BARI Tomato-4, BARI Tomato-10, BARI Tomato-11 and BARI Tomato-15 were least infested by fruit borer (3.6 to 10.0%) and had significantly lower abundance of larvae (0.3 to 0.7 plant -1 ), and the varieties were classified as resistant. The yield reduction and seed germination of these varieties ranged from 3.9 to 7.9% and 76.7 to 90.7%, respectively. Four varieties namely BARI Tomato-2, BARI Tomato-5, BARI Tomato-12 and BARI Tomato-14 were graded as moderately resistant as the varieties showed 12.4 to 16.2% fruit infestation and revealed 1.0 to 1.3 larvae plant -1 . The yield reduction and seed germination of these varieties ranged from 9.6 to13.2% and 66.7 to 73.3%, respectively. Only the variety BARI Tomato-7 was categorized as moderately susceptible which had significantly the highest abundance of fruit borer larva (1.7plant -1 ), fruit infestation (22.2%) and yield loss (15.9%), and lowest germination performance (62.7%). The study indicated that the varieties differed in their levels of resistance and this promising source of resistance may be incorporated in the integrated management of tomato fruit borer.

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“…In contrast, the selected accessions recorded higher ovipositional preference but egg hatching got impaired considerably (Selvanarayanan and Narayanasamy 2004). Larval feeding on the foliage and fruits of these accessions exerted pronounced antibiosis on H. armigera as evidenced by higher larval and pupal mortality; prolongation of larval and pupal tenure; decline in emergence and longevity of adults and also higher malformation in the adults (Selvanarayanan and Narayanasamy 2006;Selvanarayanan 2011) as observed earlier by Farrar and Kennedy (1990). Antixenosis and/or antibiosis mechanisms of resistance operating in insect resistant/tolerant crop varieties may be attributed to the biophysical and/or biochemical factors of resistance.…”

Section: Evaluation Of Insect Resistance In Tomato Germplasmmentioning

confidence: 74%

Redesigning Research on Crop Resistance to Insects: Experiences with Tomato

Selvanarayanan

2015

New Horizons in Insect Science: Towards Sustainable Pest Management

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Exploitation of host plant resistance (HPR) against insect pests has gained greater importance in intensive agriculture since the days of Reginald H. Painter. In spite of the initial euphoria mentioning few success stories, currently it warrants for introspection and redesigning of research strategies in developing insect tolerant/resistant crop cultivars. Conventional tools of resistance breeding, though successful, have lost its legacy because of temporal, manpower, and cost considerations. The declined output in terms of research publications or pest resilient crop cultivars stands testimony to the dwindling number of entomologists and breeders concentrating on such conventional tools. Many of the novel molecular approaches such as marker aided selection, mapping QTL have gained much prominence and few successful outputs are being popularized. Though many preliminary laboratory reports on molecular techniques in HPR are widely surfacing, their field success is less validated. The success of pest resilient cultivars depends on various factors including preference by growers based on better yield and economic parameters and in turn preference by consumers based on organoleptic characters. The sustained use of genetically modified crops is still suspected and debated. Further, the consumerist enigma attached to its wider adoption needs to be rusticated through ostensible safety studies. Our two decade-long experience in exploiting the resistant traits in a huge germplasm of tomato has given a far insight into the trends that were followed earlier, failures faced in developing insect tolerant cultivars and the conceptual changes visualized for the future, which are highlighted in this chapter. Redesigning Research on Crop

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Factors of resistance in tomato accessions against the fruit worm, Helicoverpa armigera (Hubner)

Cited by 28 publications

References 7 publications

Resistência à Helicoverpa armigera em genótipos de tomateiro obtidos do cruzamento de Solanum lycopersicum com Solanum galapagense

Resistência à Helicoverpa armigera em genótipos de tomateiro obtidos do cruzamento de Solanum lycopersicum com Solanum galapagense

Screening of tomato varieties against tomato fruit borer and associated plant characters

Redesigning Research on Crop Resistance to Insects: Experiences with Tomato

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