Demographic parameters of cowpea aphids on advanced semi-erect cowpea lines

Authors

  • Leandro Carvalho da Silva Universidade Federal do Ceará, Avenida Mister Hull, s/nº, CEP 60455760 Fortaleza, CE.
  • Daniel Rodrigues Nere Universidade Federal do Ceará, Avenida Mister Hull, s/nº, CEP 60455760 Fortaleza, CE.
  • Ervino Bleicher Universidade Federal do Ceará, Avenida Mister Hull, s/nº, CEP 60455760 Fortaleza, CE.
  • Antônio Vinícius Correa Barbosa Universidade Federal Rural da Amazônia, Avenida Perimetral, nº 2.501, CEP 66077-830 Belém, PA.
  • Eraldo José Madureira Tavares Embrapa Amazônia Oriental, Travessa Doutor Enéas Pinheiro, s/nº, CEP 66095-903 Belém, PA.

DOI:

https://doi.org/10.1590/S1678-3921.pab2018.v53.25875

Keywords:

Aphis craccivora, Vigna unguiculata, fecundity, plant health, plant resistance

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 which cowpea aphids showed the lowest values (in parentheses, respectively) for: net reproductive rate (RO = 3.0 and 2.5), intrinsic rate of increase (rm = 0.16 and 0.15), and finite rate of increase (λ = 1.18 and 1.16). The highest values were obtained for the 'Vita-7', MNCO4-795F-168, and 'BRS Tumucumaque' genotypes. The MNCO4-762F-03 and MNCO4-762F-09 lines show antibiosis-type resistance, which directly affects the reproductive potential of the cowpea aphid population.

Author Biographies

Leandro Carvalho da Silva, Universidade Federal do Ceará, Avenida Mister Hull, s/nº, CEP 60455760 Fortaleza, CE.

http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4367435J1

Daniel Rodrigues Nere, Universidade Federal do Ceará, Avenida Mister Hull, s/nº, CEP 60455760 Fortaleza, CE.

http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4424040Y7

Ervino Bleicher, Universidade Federal do Ceará, Avenida Mister Hull, s/nº, CEP 60455760 Fortaleza, CE.

http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4783380E9

Antônio Vinícius Correa Barbosa, Universidade Federal Rural da Amazônia, Avenida Perimetral, nº 2.501, CEP 66077-830 Belém, PA.

http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4709834U1

Eraldo José Madureira Tavares, Embrapa Amazônia Oriental, Travessa Doutor Enéas Pinheiro, s/nº, CEP 66095-903 Belém, PA.

http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4704088J3

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Published

2018-10-19

How to Cite

Silva, L. C. da, Nere, D. R., Bleicher, E., Barbosa, A. V. C., & Tavares, E. J. M. (2018). Demographic parameters of cowpea aphids on advanced semi-erect cowpea lines. Pesquisa Agropecuaria Brasileira, 53(8), 900–908. https://doi.org/10.1590/S1678-3921.pab2018.v53.25875

Issue

v.53, n.8, ago. 2018

Section

DISEASES CONTROL