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Preferences and demographic parameters of cowpea aphid on advanced lines of semiprostrate cowpea PAB
Silva,Leandro Carvalho da; Nere,Daniel Rodrigues; Bleicher,Ervino; Tavares,Eraldo José Madureira; Barbosa,Antônio Vinícius Correa.
Abstract: The objective of this work was to determine the preference and the demographic parameters of cowpea aphid (Aphis craccivora) in advanced lines of semiprostrate cowpea (Vigna unguiculata), and to verify both the existance and type of plant resistance to this insect attack. Aphid preference to 20 cowpea genotypes was tested in a randomized complete block design, with six replicates. Lines showing the highest levels of resistance and susceptibility in the preference tests were selected for use in the demographic parameter tests. Based on aphid birth rate and mortality, fertility life tables were constructed. The MNCO4-792F-123 line was classified as resistant. The lowest values for cowpea aphid intrinsic and finite growth rates were obtained for the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aphis craccivora; Vigna unguiculata; Plant resistance.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000101901
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Demographic parameters of cowpea aphids on advanced semi-erect cowpea lines PAB
Silva,Leandro Carvalho da; Nere,Daniel Rodrigues; Bleicher,Ervino; Barbosa,Antônio Vinícius Correa; Tavares,Eraldo José Madureira.
Abstract: The objective of this work was to evaluate the resistance of advanced semi-erect cowpea (Vigna unguiculata) lines, by means of a screening assay for resistance and the elaboration of fertility-life tables of Aphis craccivora (Hemiptera: Aphididae). The experiments were carried out in a screenhouse. For the resistance trial, 15 advanced cowpea lines were used, as well as two standard genotypes for resistance and two for susceptibility, which were arranged in six blocks. After resistance was determined, two lines with the highest and lowest resistance were selected for the development of the fertility-life tables which were used to estimate demographic parameters. The MNCO4-762F-03 and MNCO4-762F-09 cowpea lines were classified as resistant, for...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aphis craccivora; Vigna unguiculata; Fecundity; Plant health; Plant resistance.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000800900
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First record of Anastrepha bahiensis Lima (Diptera: Tephritidae) infesting fruits of Averrhoa carambola L. in the eastern Amazon, Brazil Rev. Bras. entomol.
Façanha,Thayná Pereira; Lemos,Walkymário de Paulo; Silva,Leandro Carvalho da; Ramos,Ana Ruth Ferreira; Silva,Janisete Gomes.
ABSTRACT We report for the first time field infestation under natural conditions by Anastrepha bahiensis on star fruit (Averrhoa carambola L., Oxalidaceae) in the state of Pará, Eastern Amazon, Brazil. This report reinforces the importance of field infestation studies on fruit flies in the Brazilian Amazon.
Tipo: Info:eu-repo/semantics/other Palavras-chave: Amazonian; Fruit flies; Host preference.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262019000400275
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