Divergência genética de milho transgênico em relação à produtividade de grãos e à qualidade nutricional

Alves, Bruna Mendonça; Filho, Alberto Cargnelutti; Burin, Cláudia; Toebe, Marcos; Silva, Leila Picolli da

doi:10.1590/0103-8478cr20140471

Cited by 20 publications

(18 citation statements)

References 13 publications

(9 reference statements)

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“…Therefore, the use of corn-based diets could enhance consumption and nutrition. Although corn has a lower protein content (7.45%) than beans (20.10%) (Farinelli and Lemos 2010, Alves et al 2015). Beans are composed of 75% globulins and albumin and are deficient in sulphur amino acids, tryptophan and methionine (Lajolo et al 1996, Donadel and Prudencio-Ferreira 1999).…”

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confidence: 99%

Artificial Corn-Based Diet for Rearing Spodoptera frugiperda (Lepidoptera: Noctuidae)

Pinto

Torres

Truzi

et al. 2019

Journal of Insect Science

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Spodoptera frugiperda (J.E. Smith, 1797) is considered a key pest of maize. However, the artificial diets used for rearing this insect in the laboratory do not contain corn. The aim of this study was to evaluate the biology and to compare the food consumption by S. frugiperda, as well as the food preference of the larvae in the standard diet and the corn-based diet. Three of the following diets were evaluated: a standard diet based on beans (D1), a diet with corn flour as substitute for wheat germ (D2), and a diet replacing beans with green corn (D3). The biological parameters evaluated were period and survival of larvae and pupae; weight of male and female pupae; sex ratio; fecundity; egg incubation period; and adult longevity. The nutritional indices were determined and the biological data obtained were used to determine the parameters of fertility life tables; we also performed a multiple-choice test (feeding test). Larval development of S. frugiperda occurred in all three diets, although without oviposition by females developed from larval fed on D2. There was no difference among the diets in relation to the fertility life table parameters. The diet D2 resulted in better ingestion, digestion, assimilation, and conversion of food, but was associated with a metabolic cost to assimilate the food. Using a multiple-choice test, we observed that the larvae preferred diet D2. Based on our results, the most adequate diets for rearing S. frugiperda in the laboratory are D1 and D3.

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confidence: 99%

Artificial Corn-Based Diet for Rearing Spodoptera frugiperda (Lepidoptera: Noctuidae)

Pinto

Torres

Truzi

et al. 2019

Journal of Insect Science

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“…This level of productivity corroborates with the reality of commercial upland maize crops in the Central-West region of Brazil (800 meters above sea level). Alves et al (2015) evaluated the yield of 18 transgenic genotypes and obtained an average of 6,690 kg.ha -1 . In the previous year, Alves et al 2014conducted an experiment comparing transgenic and conventional hybrids with early and super-early cycles, and obtained mean yields of 5,000 kg.ha -1 and 5,920 kg -1 , respectively.…”

Section: Grain Yieldmentioning

confidence: 99%

Agronomic parameters and morpho-agronomic characteristics of genetically modified maize hybrids compared to conventional maize hybrids

2020

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The objectives were to study the behavior of fifteen pre-commercial upland maize hybrids, analyze their agronomic performance regarding grain yield, and evaluate productivity components, as well as morpho-agronomic characteristics, in the Midwest Region of Brazil. Two experiments were conducted in the municipalities of Formosa-GO and Planaltina-DF, 2016/17 crop year. Both consisted of five pre-commercial maize hybrid platforms (HPA252, HPB262, HPB621, HPB646, and HPD354). Each platform consisted of three different versions: conventional, transgenic with a Bt gene that expresses the protein Cry1F, and transgenic with two Bt genes that express the proteins Cry1F and Cry1AB. The experiment was randomized blocks with four replications. The experimental plot was four lines five meters long considering the two central lines as useful. The lines were spaced 0.75 meters apart, and the final density was five plants per linear meter. To estimate grain yield, the plots were harvested, and the weight was extrapolated to kg.ha-1. The moisture was standardized at 14%. Data were submitted to analysis of variance, and the means were compared by Tukey test at 5% probability using the Sisvar software. Grain yield between treatments ranged from 8,381 to 12,908 kg.ha-1, and the average yield was 11,234 kg.ha-1. The parameters evaluated were divided into two groups. The first group contained parameters determining grain yield: grain depth, thousand grains weight, number of rows of grains, number of grains per row, and grain yield. The second group contained morpho-agronomic parameters that directly interfere with resistance to lodging and plant breaking: plant height, ear insertion height, and mean stem diameter. There was no direct effect of the transgenes on the evaluated hybrids since the classification of productivity was not divided into conventional and transgenic classes. It is suggested that the HPA252YH, HP621H and HP646H versions be discarded because grain yield performance was unsatisfactory compared to their respective conventional and transgenic counterparts. The parameters GD and W1000 are more effective for grain yield estimation than NR and NG. It was observed for HP621H that, in addition to a lower grain yield, there was a significant reduction in stem diameter, indicating a possible reduction in lodging tolerance and/or plant breaking when exposed to adverse climatic conditions such as windstorms. For the HPD354H version, the release of the transgenic counterpart HPD354YH is preferentially indicated since the H version had a significant reduction in stem diameter and a possible greater tolerance to lodging and/or plant breaking under the same conditions.

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“…Among the forages, maize is one of the most commonly used in animal feed. Around 70 to 80% of the production is used in animal diets, destined for animal protein production in, e.g., eggs, meat and milk (Alves et al 2015). According MG Pereira et al to Paziani et al (2009), maize is the most commonly used crop for silage production because of its high nutritional value associated with high yields.…”

Section: Introductionmentioning

confidence: 99%

UENF MSV2210 and UENF MS2208: Silage and green maize hybrids for Rio de Janeiro State, Brazil

Pereira

Crevelari

Viana

et al. 2020

Crop Breed. Appl. Biotechnol.

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Divergência genética de milho transgênico em relação à produtividade de grãos e à qualidade nutricional

Cited by 20 publications

References 13 publications

Artificial Corn-Based Diet for Rearing Spodoptera frugiperda (Lepidoptera: Noctuidae)

Artificial Corn-Based Diet for Rearing Spodoptera frugiperda (Lepidoptera: Noctuidae)

Agronomic parameters and morpho-agronomic characteristics of genetically modified maize hybrids compared to conventional maize hybrids

UENF MSV2210 and UENF MS2208: Silage and green maize hybrids for Rio de Janeiro State, Brazil

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