Essential oil repellent action of plants of the genus Zanthoxylum against Bemisia tabaci biotype B (Homoptera: Aleyrodidae)

The B-strain of Bemisia tabaci Gennadius is a key pest of several crops and chemical control is the main control method used by growers, although reduction in efficacy due to insecticide resistance has already been reported. The aim of this work was to investigate the insecticidal effect of an array of synthetic sucrose esters with the aliphatic and aromatic groups on whitefly adults. Sucrose butyrate, caprate, octanoate, palmitate, oleate, octaacetate, phthalate, benzoate, and sucrose diacetate hexaisobutyrate were tested. The solutions were prepared and applied on the adults caught on yellow sticky traps using the Potter spray tower. Long-chains sucrose aliphatic esters were more effective against the silverleaf whiteflies and the highest mortality was obtained with sucrose oleate and sucrose octanoate. Since these compounds were tensoactive, sodium dodecylsulphate was also tested for the comparison but no effect was observed. Sucrose butyrate and other aliphatic and aromatic sucrose polyesters showed negligible effect on the silverleaf whiteflies.

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Antibiosis effects of wild bean lines containing arcelin on Bemisia tabaci (Genn.) biotype B (Homoptera: Aleyrodidae)

Anais da Sociedade Entomológica do Brasil ◽

10.1590/s0301-80592000000300020 ◽

2000 ◽

Vol 29 (3) ◽

pp. 573-582 ◽

Cited By ~ 8

Author(s):

Maria A. de G. Oriani ◽

Fernando M. Lara

Keyword(s):

Bemisia Tabaci ◽

Development Time ◽

Mortality Rates ◽

Near Isogenic Lines ◽

Biochemical Screening ◽

Phaseolus Vulgaris L ◽

Wild Genotype ◽

Biotype B ◽

Antibiosis Resistance ◽

Bemisia Tabaci Biotype B

The biology of Bemisia tabaci biotype B (Genn.) on bean (Phaseolus vulgaris L.) genotypes containing arcelin in the seeds was evaluated. Also, biochemical screening of seeds and leaves material of these genotypes were carried out in order to verify if traces of arcelin could be found in its leaves. The tests were conducted under greenhouse conditions, in the dry and wet seasons, with the following genotypes: ARC 3s, ARC 5s (wild genotypes containing arcelin in the seeds); ARC 1, ARC 2, ARC 3, ARC 4 (near isogenic lines containing arcelin in the seeds - EMBRAPA) and Porrillo 70, Bolinha, IAPAR MD 808 (commercial genotypes without arcelin). The wild genotypes, ARC 3s and ARC 5s, showed high levels of antibiosis resistance type, mainly for ARC 5s which presented the highest nymphs mortality rates, approximately 90%. Also, the longest development time for nymphs fed on ARC 5s genotype suggest antibiosis and/or feeding nonpreference resistance type. The wild genotype resistance is not related with arcelin presence in the seeds, since no trace of this protein was found in its leaves.

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Silicon influence on resistance induction against Bemisia tabaci biotype B (Genn.) (Hemiptera: Aleyrodidae) and on vegetative development in two soybean cultivars

Neotropical Entomology ◽

10.1590/s1519-566x2011000400014 ◽

2011 ◽

Vol 40 (4) ◽

pp. 495-500 ◽

Cited By ~ 14

Author(s):

RS Ferreira ◽

JC Moraes ◽

CS antunes

Keyword(s):

Bemisia Tabaci ◽

Vegetative Development ◽

Resistance Induction ◽

Soybean Cultivars ◽

Biotype B ◽

Bemisia Tabaci Biotype B

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Resistance of melon cultivars to Bemisia tabaci biotype B

Horticultura Brasileira ◽

10.1590/s0102-05362012000400007 ◽

2012 ◽

Vol 30 (4) ◽

pp. 600-606 ◽

Cited By ~ 3

Author(s):

Edson LL Baldin ◽

José Paulo GF da Silva ◽

Luiz Eduardo R Pannuti

Keyword(s):

Bemisia Tabaci ◽

Plant Resistance ◽

Chemical Control ◽

Alternative Methods ◽

Silverleaf Whitefly ◽

Trichome Density ◽

Breeding Programs ◽

Biotype B ◽

Future Work ◽

Bemisia Tabaci Biotype B

The silverleaf whitefly, Bemisia tabaci biotype B, is currently one of the most important pests of melon, causing direct and indirect damage to plants, and significantly reducing production in the field. Due to the need for alternative methods of chemical control in melon crops, the melon cultivars AF-646, AF-682, Don Luis, Frevo, Jangada, Nilo, Vereda, Amarelo Ouro and Hales Best were assessed at field, greenhouse, and laboratory trials for resistance to whitefly B. tabaci biotype B. In general, 'Hales Best' and 'Amarelo Ouro' were the most resistant, showing oviposition non-preference against whitefly. The trichome density is associated with the variation in oviposition on the cultivars and should be further investigated in future work. These results may be helpful in melon breeding programs, focusing on plant resistance to B. tabaci biotype B.

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