Insect damages on structural, morphologic and composition of Bt maize hybrids to silage

Authors

  • Geraldo Balieiro Neto Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Agência Paulista de Tecnologia dos Agronegócios, Polo Regional de Desenvolvimento Tecnológico dos Agronegócios do Centro Leste, Ribeirão Preto, SP
  • Terezinha Monteiro dos Santos Cividanes Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Agência Paulista de Tecnologia dos Agronegócios, Polo Regional de Desenvolvimento Tecnológico dos Agronegócios do Centro Leste, Ribeirão Preto, SP
  • Roberto Botelho Ferraz Branco Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Agência Paulista de Tecnologia dos Agronegócios, Polo Regional de Desenvolvimento Tecnológico dos Agronegócios do Centro Leste, Ribeirão Preto, SP
  • Mauro Sartori Bueno Instituto de Zootecnia, Agência Paulista de Tecnologia dos Agronegócios, Secretaria da Agricultura e Abastecimento do Estado de São Paulo, Nova Odessa, SP
  • Rosana Possenti Instituto de Zootecnia, Agência Paulista de Tecnologia dos Agronegócios, Secretaria da Agricultura e Abastecimento do Estado de São Paulo, Nova Odessa, SP
  • José Ramos Nogueira Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Agência Paulista de Tecnologia dos Agronegócios, Polo Regional de Desenvolvimento Tecnológico dos Agronegócios do Centro Leste, Ribeirão Preto, SP

DOI:

https://doi.org/10.17523/bia.v70n3p252

Keywords:

Bacillus thruringiensis, armyworm, earworm, recombinant DNA, forage mass, Zea mays

Abstract

It was aimed to evaluate the effect of insect damage on the morphologic and structural characteristics and chemical composition from maize hybrids DKB 390 and AG 8088 with the Cry1Ab trait versus its nonbiotech counterpart. The GMO did not receive insecticide application and the conventional hybrids received one deltametrina (2.8%) application at 42 days. The damages caused bySpodoptera frugiperda and Helicoverpa zea in hybrids with Cry1Ab were smaller than its nonbiotech counterpart. After harvest, 95 days after seedling plants were separated in stalks, ears, leafs, dead leafs and floral pennant. The experimental design was randomized block in factorial arrangement 2 x 2. The height of plant and height of ear, percentage and amount of dead leafs from hybrids with the Cry1Ab were higher than its nonbiotech counterpart. There was higher nutrients transfer from stalks to grain filling and smaller rate stalks:ear on transgenic plant. The quality of the transgenic plants can be better when harvest earlier, by increasing no fiber carbohydrates, but when harvest latter, by increasing stalk percentage and stalk lignin content.

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Published

2013-03-29

Issue

Section

FORAGE CROPS AND PASTURES

How to Cite

Insect damages on structural, morphologic and composition of Bt maize hybrids to silage. (2013). Bulletin of Animal Husbandry, 70(3), 252-260. https://doi.org/10.17523/bia.v70n3p252

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