Cotton leaf trichomes and populations of Empoasca lybica and Bemisia tabaci

Butler, G. D.; Wilson, F. D.; Fishler, G.

doi:10.1016/s0261-2194(91)80117-x

Cited by 42 publications

(23 citation statements)

References 5 publications

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“…According to the morphological characters of the experimental roselle varieties, reduction in the dense of leaf hairs lead to an increase in the number of pest populations. This observation is in agreement with those given by Rao et al (1990), Butler et al (1991) and A. S. H. Abdel-Moniem et al Weatherbee and Hardee (1994). According to Marschner (1995), the main types of plant resistant to insects are: i) physical (e.g.…”

Section: The Pink Hibiscus Mealy Bug Maconellicoccus Hirsutussupporting

confidence: 91%

Vertical distribution of some piercing sucking insects on some roselle varieties in Egypt and the role of amino acids concentration in infestation

Abdel-Moniem

Farag²,

Abbass³

2005

Archives Of Phytopathology And Plant Protection

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The cotton aphid, Aphis gossypii Glover was found to be the only aphid species infesting the tested roselle varieties (Sudani, Masri and White), Hibiscus sabdariffa L. which were cultivated in El-Kanater Elkhayria (about 30 km north Cairo) as ex situ old land. The vertical distribution of the whitefly, Bemisia tabaci (Genn.); the leafhopper, Empoasca spp. and the pink hibiscus mealy bug, Maconellicoccus hirsutus Green, as insect pests attacking this crop had been studied. Moreover, certain morphological characters and amino acids concentrations in the three varieties of roselle, were obtained. The obtained results indicated that the experimental insect pests severely attacked leaves of the stem nodes from the 8th to the 11th (counting from the top of the plant), whereas whitefly were more abundant on these nodes. All tested insect species were less abundant on the 4th stem node. This may be due to the extensive existence of gland hairs, that excrete some compound especially phenols that might prevent the insects from reproducing on the leaves. The opposite was, however, true for M. hirsutus as it did not attack Sudani and Masri varieties but the infestation occurred at the highest level on the White variety.

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Section: The Pink Hibiscus Mealy Bug Maconellicoccus Hirsutussupporting

confidence: 91%

Vertical distribution of some piercing sucking insects on some roselle varieties in Egypt and the role of amino acids concentration in infestation

Abdel-Moniem

Farag²,

Abbass³

2005

Archives Of Phytopathology And Plant Protection

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“…Em geral, variedades pubescentes são preferidas até certo nível, a partir do qual a pubescência começa a interferir na alimentação e na oviposição. Butler Jr. et al (1991) observaram que houve declínio da população do inseto em algodoeiros com mais de 70 tricomas por 13,7 mm 2 . Isto Tabela 4.…”

Section: Methodsunclassified

Resistência de genótipos de soja a Bemisia tabaci (Genn.) biótipo B (Hemiptera: Aleyrodidae)

Lourenção¹

2002

Neotrop. Entomol.

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-Twenty soybean genotypes were evaluated in relation to silverleaf whitefly [Bemisia tabaci (Genn.) biotype B] resistance, in a free-choice test, under greenhouse conditions. The experiment was carried out with artificially infested soybean plants and evaluated during vegetative and reproductive stages. Line D 75-10169 and cultivars IAC 17 and IAC 19 presented nonpreference for oviposition, weak colonization and low adult attractiveness. Trichome density at abaxial trifoliolate surface was also measured in twenty soybean genotypes, at three plant positions (upper, middle and lower canopies), at the same development stages of the free-choice test. The line D 75-10169 presented the lowest trichome density while the cultivar 'IAC Holambra Stwart' showed the highest one. Significant correlations were detected between adult attractiveness and oviposition preference and between adult attractiveness and colonization level. To confirm the oviposition preference results, a no-choice test was carried out, also in greenhouse conditions, and the performance of five soybean genotypes (one highly susceptible and four with the smallest levels of oviposition) was checked. The line PI 227687, though showing multiple resistance to insects, was highly oviposited by silverleaf whitefly, while 'IAC 19', 'IAC 17', 'Coodetec 201' and line D 75-10169 showed oviposition nonpreference as the mecanism of resistance. The results strongly suggest that the resistance observed in those genotypes is stable.KEY WORDS: Glicyne max, host plant resistance, oviposition preference, silverleaf whitefly.RESUMO -O comportamento de 20 genótipos de soja foi avaliado em relação à preferência para oviposição, atratividade para adultos e colonização das plantas pela mosca branca Bemisia tabaci (Genn.) biótipo B, em teste de livre escolha, em casa de vegetação. O experimento foi conduzido com plantas de soja nas fases vegetativa e reprodutiva, infestadas artificialmente com esse inseto. As cultivares IAC 17, IAC 19 e a linhagem D 75-10169 apresentaram resistência do tipo não preferência para oviposição, baixos níveis de colonização e atratividade para adultos em relação a B. tabaci biótipo B. Também em casa de vegetação, foi avaliada a densidade de tricomas na superfície abaxial de folíolos dos 20 genótipos de soja, nos estratos superior, médio e inferior das plantas, nas fases de desenvolvimento em que as plantas foram avaliadas no teste de livre escolha. A linhagem D 75-10169 apresentou baixa densidade de tricomas, enquanto a cultivar IAC Holambra Stwart mostrou-se altamente pubescente. Foram verificadas correlações entre atratividade para adultos e preferência para oviposição e entre atratividade para adultos e colonização das plantas. Para confirmação dos resultados de preferência para oviposição, foi realizado teste sem chance de escolha, em casa de vegetação, no qual foi avaliado o comportamento de cinco genótipos (um altamente suscetível e os quatro menos preferidos para oviposição no teste com chance de escolha). A linhagem PI 227687, embo...

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“…Chu et al (2002) indicated the okra leaf genotypes had lower number Miyazaki et al (2012) of adults, eggs and nymphs compared with normal leaf upland cotton cultivars, because the okra leaf shape provided a less desirable micro-environment with a more open canopy. Leaf hair density has also been linked to SLW resistance, with very smooth (glabrous) and very hairy leaves (>510 hairs per cm 2 ) harbouring less SLW than moderately hairy leaves (Butter and Vir, 1989;Butler et al, 1991;Acharya and Bhargava, 2008). Walker and Natwick (2006) reported very high levels of resistance against SLW in Gossypium thurberi Todaro, which is a wild diploid cotton species having both okra and glabrous leaf traits.…”

Section: Introductionmentioning

confidence: 99%

Identification of host plant resistance to silverleaf whitefly in cotton: Implications for breeding

Miyazaki

Stiller

Wilson

2013

Field Crops Research

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Cotton leaf trichomes and populations of Empoasca lybica and Bemisia tabaci

Cited by 42 publications

References 5 publications

Vertical distribution of some piercing sucking insects on some roselle varieties in Egypt and the role of amino acids concentration in infestation

Vertical distribution of some piercing sucking insects on some roselle varieties in Egypt and the role of amino acids concentration in infestation

Resistência de genótipos de soja a Bemisia tabaci (Genn.) biótipo B (Hemiptera: Aleyrodidae)

Identification of host plant resistance to silverleaf whitefly in cotton: Implications for breeding

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