Performance of Conventional and  Transgenic Soybean Cultivars in the South and Alto Paranaiba Regions of Minas Gerais, Brazil

Lima, Isabela Pereira de; Bruzi, Adriano Teodoro; Botelho, Flávia Barbosa Silva; Zambiazzi, Everton Vinícius; Soares, Igor Oliveri; Zuffo, Alan Mário

doi:10.4236/ajps.2015.69138

Cited by 9 publications

(8 citation statements)

References 7 publications

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“…Soybean [Glycine max (L.) Merrill.] is one of the essential oil crops in the world, especially due to the high amount of seed protein (36-40 %) and oil content (18-20 %) (Lima et al 2015). The crop has a large nutrient requirement throughout…”

Section: Introductionmentioning

confidence: 99%

Response of early soybean cultivars to nitrogen fertilization associated with Bradyrhizobium japonicum inoculation

Zuffo

Steiner

Busch

et al. 2018

Pesqui. Agropecu. Trop.

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In early soybean cultivars of high productive potential, the use of chemical nitrogen (N) fertilizer may be a critical factor to meet the crop N requirements for obtaining high yields. In order to determine the response of early soybean cultivars to doses and times of nitrogen fertilizer application, associated with the inoculation of Bradyrhizobium japonicum, two field experiments were conducted in a Quartzipsamment soil from the Brazilian tropical Savannah, during the 2016/2017 and 2017/2018 growing seasons. The experimental treatments were arranged in a 2 × 3 × 4 factorial scheme, being two soybean cultivars (BRS 1074 IPRO and ST 797 IPRO), three application times of N fertilizer (sowing, 30 and 50 days after the emergence) and four N doses (0 kg ha-1, 20 kg ha-1, 40 kg ha-1 and 60 kg ha-1). The following variables were evaluated: plant height, shoot dry matter, number of nodules, nodule dry matter, first pod height, number of pods, number of grains per pod, 1,000-grain mass, grain yield and harvest index. The use of N fertilizer did not improve the production components and did not increase the soybean grain yield, regardless of the doses and times of application. Therefore, it was concluded that, if efficient strains of B. japonicum are used in areas of first soybean crop, in a Quartzipsamment soil with medium-high fertility, especially with a relatively high N availability due to the mineralization of the soil organic matter, there is no need to apply starter or late doses of nitrogen fertilizer.

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Section: Introductionmentioning

confidence: 99%

Response of early soybean cultivars to nitrogen fertilization associated with Bradyrhizobium japonicum inoculation

Zuffo

Steiner

Busch

et al. 2018

Pesqui. Agropecu. Trop.

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“…Soybean [Glycine max (L.) Merrill] is considered one of the most important legumes in the world for the production of grains, due to the high protein content and vegetal oil, which is used for human and animal feeding (Lima et al, 2015). Estimates indicate that world soybean production for the 2016/2017 crop can be 336.09 million tons and that Brazil is the world's second largest soybean producer with about 103 million tons of soybeans (CONAB, 2017).…”

Section: Introductionmentioning

confidence: 99%

Research Article Genetic parameters and selection of soybean lines based on selection indexes.

Teixeira¹,

Hamawaki²,

Nogueira³

et al. 2017

Genet. Mol. Res.

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ABSTRACT. Defining selection criteria is important to obtain promising genotypes in a breeding program. The objective of this study was to estimate genetic parameters for agronomic traits and to perform soybean line selection using selection indices. The experiment was conducted at an experimental area located at Capim Branco farm, belonging to the Federal University of Uberlândia. A total of 37 soybean genotypes were evaluated in randomized complete block design with three replicates, in which twelve agronomic traits were evaluated. Analysis of variance, the Scott-Knott test at the 1 and 5% level of probability, and selection index analyses were performed. There was genetic variability for all agronomic traits, with medium to high levels of genotype determination coefficient. Twelve lines with a total cycle up to 110 days were observed and grouped with the cultivars MSOY 6101 and UFUS 7910. Three lines, UFUS FG 03, UFUS FG 20, and UFUS FG 31, were highlighted regarding grain yield with higher values than the national average of 3072 kg/ha. The direct selection

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“…Since the implementation of RR soybeans in commercial crops, there have been some questions about the efficiency of production of these cultivars when compared to conventional cultivars. In the literature, some of the studies already carried out, comparing both, have demonstrated differences in agronomic performance (Fonseca et al, 2013;Lima et al, 2008;Lima et al, 2015). The soybean agronomic performance is greatly influenced by the interaction genotype x environment, which makes difficult the identification of adapted and stable genotypes for the different growing regions (Batista et al, 2015;Branquinho et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Agronomic performance and path analysis of roundup ready and conventional soybean from two-way crosses in the northwestern of So Paulo, Brazil

Leite¹,

Uneda-Trevisoli²,

Groli³

et al. 2016

Afr. J. Agric. Res.

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The aim of this study was to compare the agronomic performance of RR soybean genotypes with conventional soybean genotypes derived from two-way crosses and evaluate through path analysis the influence of important traits for culture on the grain yield (GY) in the Northwestern of São Paulo, Brazil. It was used the randomized block design with three replications. Among the analyzed RR genotypes, three genotypes has high GY, with average values over 4575.5 kg ha-1 , while among the conventional, ten genotypes, and the check Conquista showed superiority for GY, with average values over 3511.4 Kg ha-1. In general, the most productive RR soybean genotypes showed higher values when compared with conventional genotypes with higher yield. However, conventional soybean showed a higher number of superior genotypes with similar behavior when compared to the RR soybean. For the group of RR soybean genotypes, all agronomic traits, except one hundred seed weight (HSW), correlated positively with GY. For the group of conventional soybean genotypes, there was no significant correlation between GY and all agronomic traits analyzed. The genotypic correlation and path analysis indicate the plant height at flowering (PHF) and plant height at maturity (PHM) as the most favorable and direct effect on GY.

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Performance of Conventional and Transgenic Soybean Cultivars in the South and Alto Paranaiba Regions of Minas Gerais, Brazil

Cited by 9 publications

References 7 publications

Response of early soybean cultivars to nitrogen fertilization associated with Bradyrhizobium japonicum inoculation

Response of early soybean cultivars to nitrogen fertilization associated with Bradyrhizobium japonicum inoculation

Research Article Genetic parameters and selection of soybean lines based on selection indexes.

Agronomic performance and path analysis of roundup ready and conventional soybean from two-way crosses in the northwestern of So Paulo, Brazil

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