Preferência de Aphis craccivora por genótipos de feijão-caupi de porte prostrado, em Aquidauana, MS

Rodrigues, Sérgio Roberto; Oliveira, Osni de; Ceccon, G.; Correa, Agenor Martinho; Abot, Alfredo Raúl

doi:10.1590/s0034-737x2010000600008

Cited by 5 publications

(2 citation statements)

References 8 publications

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“…It has been reported that trichomes did not affect the selection of host or the biology of the cotton aphid, Aphis gossypii Glöver on cotton [ 67 ], and the cowpea aphid, Aphis craccivora C.L. Koch on cowpea [ 68 ], and on lima bean [ 69 ]. However, leaf trichomes can mechanically disrupt the movement of insect herbivores on the leaf surface, thus reducing access to the food.…”

Section: Discussionmentioning

confidence: 99%

Resistance and tolerance of ten carrot cultivars to the hawthorn-carrot aphid, Dysaphis crataegi Kalt., in Poland

2021

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Damage caused to cultivated carrots by the hawthorn-carrot aphid, Dysaphis crataegi Kalt. (Hemiptera: Aphididae) is one of the factors limiting carrot production in Poland. Planting resistant and tolerant cultivars could reduce yield losses due to the damage caused by this pest. This study was conducted to evaluate the resistance and/or tolerance of 10 carrot genotypes to hawthorn-carrot aphid. Their field resistance was determined under field conditions based on five indicators, namely, mean number of alates (migrants) per plant and mean percentage of plants colonized by them, mean seasonal number of aphids per plant, mean number of aphids per plant and mean percentage of infested plants at peak abundance. Antibiosis experiments were conducted under laboratory conditions and pre-reproductive, reproductive time, fertility, and demographic parameters, represented by the net reproduction rate (Ro), intrinsic rate of increase (rm) and mean generation time (T), were calculated. Five cultivars, Afro F1, Nipomo F1, Samba F1, White Satin F1, and Yellowstone showed field resistance. Antibiosis experiments revealed significant differences among the carrot cultivars in the length of the reproductive period, female fecundity in the time equal to the pre-reproduction time, and total progeny of hawthorn-carrot aphid. The intrinsic rate of natural increase (rm) for apterous aphids varied significantly, ranging between 0.181 (Nipomo F1) and 0.343 females/female/day (White Satin F1). Additionally, the estimated net reproductive rate (R0) was the lowest on Nipomo F1, and this genotype was determined to be resistant. Our results suggest that a very high density of trichomes on the leaf petioles (71.94 trichomes/cm2) could adversely affect the feeding, bionomy, and demographic parameters of hawthorn-carrot aphid on the cultivar Nipomo F1. In addition, Napa F1 and Kongo F1 demonstrated high tolerance. Considering all the results collectively, four genotypes, Afro F1, Kongo F1, Napa F1 and Nipomo F1, were relatively resistant/tolerant to the hawthorn-carrot aphid.

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Section: Discussionmentioning

confidence: 99%

Resistance and tolerance of ten carrot cultivars to the hawthorn-carrot aphid, Dysaphis crataegi Kalt., in Poland

2021

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“…Entretanto, a Tabela 2 -Número médio de adultos (NA) e ninfas (NN) e relação número de ninfas / número de adultos (NN/NA) de Aphis craccivora em genótipos de Vigna unguiculata, 48 horas após infestação, em teste com chance de escolha Corroborando com os resultados encontrados nesse trabalho, Rodrigues et al (2010) verificaram baixas infestações de A. craccivora em BRS Guariba. Em condições de campo, Bandeira et al (2015) observaram que genótipos BRS Cauamé e BRS Guariba apresentaram os menores índices de infestação por A. craccivora, sugerindo a existência de resistência do tipo não preferência.…”

Section: Resultsunclassified

Preferência do pulgão-preto, Aphis craccivora Koch (Hemiptera: Aphididae), a genótipos de feijão-caupi

Melville¹,

Lima

Morais³

et al. 2016

AGRO@MBIENTE ON-LINE

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Resumo: O feijão-caupi está amplamente distribuído nas regiões tropicais e subtropicais do mundo, sendo atacado por diversos insetos, dentre esses, o pulgão-preto, Aphis craccivora Koch (Hemiptera: Aphididae). Objetivou-se com este trabalho avaliar a preferência de pulgão-preto a genótipos de feijão-caupi a partir de testes com e sem chance de escolha. Foram realizados experimentos em gaiolas (3,0 x 1,6 x 2,0 m), com e sem chance de escolha, utilizando delineamento experimental de blocos ao acaso e inteiramente ao acaso, respectivamente, com quatro repetições, sendo a unidade experimental constituída por uma planta cultivada em vaso de cada um dos 15 genótipos estudados: Apiaú, Cara-preta, BR 17 Gurguéia, BRS Aracê, BRS Cauamé, BRS Guariba, BRS Itaim, BRS Juruá, BRS Mazagão, BRS Marataoã, BRS Tumucumaque, BRS Xiquexique, Iracema, Pretinho Precoce 1 e Sempre Verde. No ensaio com chance de escolha, um vaso de planta infestada com o pulgão foi colocado no centro da gaiola com os 15 vasos de cada genótipo distribuídos aleatoriamente em forma de círculo. Após 24, 48 e 96 h, foram contados o número de adultos e de ninfas por planta. No ensaio sem chance de escolha, cinco fêmeas adultas foram colocadas nas plantas aprisionadas dentro de minigaiolas presas às plantas, sendo contados, após 96 h, o número de fêmeas vivas e mortas, bem como o número de ninfas produzidas. Os genótipos de feijão-caupi BRS Cauamé, BRS Guariba e BRS Aracê, apresentam resistência do tipo não-preferência para alimentação, além de interferirem negativamente na produção de ninfas por fêmea de Aphis craccivora. Os genótipos Apiaú, BR 17 Gurguéia e BRS Mazagão são suscetíveis a A. craccivora. Palavras-chave:Antixenose. Não-preferência. Resistência de planta a insetos. Vigna unguiculata. Abstract:Cowpea is widely distributed in tropical and subtropical regions of the world, being attacked by various insects, among these, the black aphid, Aphis craccivora Koch (Hemiptera: Aphididae). The aim of this study was to evaluate the preference of black aphid, to different cowpea genotypes. Two experiments were conducted in cages (3.0 x 1.6 x 2.0 m), with free choice and no-choice, a randomized block and completely randomized design, respectively, with four replications. The experimental unit consisted of one plant per plastic pot. The followed 15 cowpea genotypes were evaluated in the study: BRS Guariba, Pretinho Precoce 1, Apiaú, Sempre Verde, Cara-preta, BRS Mazagão, BRS Cauamé, BR 17 Gurguéia, Iracema, BRS Aracê, BRS Itaim, BRS Xiquexique, BRS Marataoã, BRS Tumucumaque and BRS Juruá. In the free-choice test, a potted plant infested with aphids was placed in the center of the cage with 15 pots of each genotype randomly distributed in a circle. After 24, 48 and 96 h were counted the number of adults and nymphs per plant. In the no-choice test, five females adult were placed in plants trapped in cages attached to the plants, being counted after 96 h, the number of live and dead females, and the number of nymphs. Cowpea genotypes BRS Cauamé, BRS Guariba e BRS ...

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Resistance in lima bean to Aphis craccivora (Hemiptera: Aphididae)

et al. 2019

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Preferência de Aphis craccivora por genótipos de feijão-caupi de porte prostrado, em Aquidauana, MS

Cited by 5 publications

References 8 publications

Resistance and tolerance of ten carrot cultivars to the hawthorn-carrot aphid, Dysaphis crataegi Kalt., in Poland

Resistance and tolerance of ten carrot cultivars to the hawthorn-carrot aphid, Dysaphis crataegi Kalt., in Poland

Preferência do pulgão-preto, Aphis craccivora Koch (Hemiptera: Aphididae), a genótipos de feijão-caupi

Resistance in lima bean to Aphis craccivora (Hemiptera: Aphididae)

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