Qualidade de grãos de duas cultivares de soja em função da disponibilidade de água no solo e arranjo de plantas

Maehler, Andre Roberto; Costa, José António; Pires, J. L. F.; Rambo, Lisandro

doi:10.1590/s0103-84782003000200006

Cited by 14 publications

(17 citation statements)

References 12 publications

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“…The protein content difference among grains classified by 12 × 3/4" and 16 × 3/4" sieves was approximately 2%, which is a significant value for protein meal production for animal feeds. Oil content was not affected by the evaluated experimental factors, thus, it appears that this is a variable that is little affected by environmental conditions (DARDANELLI et al, 2006;GAO et al, 2009;MAEHLER et al, 2003). …”

Section: Resultsmentioning

confidence: 87%

Size, chlorophyll retention and protein and oil contents of grains from soybean plants grown in different spatial arrangements

Werner

Balbinot

Ferreira

et al. 2017

SCA

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The spatial arrangement of soybean plants, determined by row spacing and seeding rate, affects the intraspecific competition for water, light, and nutrients, as well as plant architecture and grain development, quality, and chemical composition. The aims of this study were to evaluate the effect of row spacing and seeding rate on the grain size produced, and the influence of these three factors on chlorophyll retention and protein and oil content in grain. Two experiments were conducted in the 2013/14 and 2014/15 growing seasons, using a 4 × 3 factorial randomized block design with three replications. Four different row spacings [20 cm (narrow row), 50 cm (conventional), 20/80 cm (twin rows) and crossed lines (50 cm)] and three seeding rates (150, 300, and 450 thousand viable seeds ha -1 ) were evaluated. The grains were classified by size using oblong sieves and then the effects of spatial arrangements and size of grain on the percentage of green grains and protein and oil contents were evaluated. Higher plant densities were associated with larger grain size, whereas the effects of spacing between the rows on the grain size varied between growing seasons. The arrangement in cross-rows and high plant density produced a higher percentage of green grains under weather conditions favorable to the development of this attribute. The effects of plant spatial arrangements on the contents of protein and oil in grains were variable, and it was not possible to determine whether the spatial arrangement of plants had an effect on the levels of protein and oil in grains. Larger grains had higher protein content, but oil contents were not affected by grain size. Key words: Glycine max L. Grain quality. Green grains. Row spacing. Seeding rate. ResumoO arranjo espacial de plantas de soja, determinado pelo espaçamento entre as fileiras e pela densidade de semeadura, afeta a competição intraespecífica por água, luz e nutrientes, bem como a arquitetura da planta, podendo influenciar na formação, qualidade e composição química dos grãos produzidos. Os objetivos do trabalho foram avaliar o efeito do espaçamento entre fileiras e da densidade de semeadura no tamanho dos grãos produzidos e qual a influência desses três fatores na retenção de clorofila e nos teores de proteína e óleo nos grãos. Dois experimentos foram conduzidos nas safras 2013/14 e 2014/15, com delineamento de blocos casualizados, em esquema fatorial 4x3, com três repetições. Foram avaliados quatro espaçamentos entre fileiras: 20 cm (reduzido), 50 cm (convencional), 20/80 cm (fileira dupla) e 50 cm cruzado e três densidades de semeadura (150, 300 e 450 mil sementes viáveis ha -1 ). Os grãos produzidos foram classificados em peneiras de crivos oblongos. Após, avaliaram-se os efeitos do arranjo espacial e do tamanho dos grãos sobre a porcentagem de grãos verdes e os teores de proteína e óleo. As maiores densidades de plantas possibilitam a formação de grãos com maior tamanho, enquanto os efeitos de espaçamentos entre as fileiras sobre o tamanho dos grãos são vari...

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Section: Resultsmentioning

confidence: 87%

Size, chlorophyll retention and protein and oil contents of grains from soybean plants grown in different spatial arrangements

Werner

Balbinot

Ferreira

et al. 2017

SCA

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“…However, Maehler et al (2003), when working with two soybean cultivars under two water regimes (irrigated and nonirrigated), found that the oil content of the grains was not changed. The summary of the variance analysis for phosphorus use efficiency in the crop for the characteristic of oil content, can be seen in Table 3.…”

Section: Resultsmentioning

confidence: 98%

Genetic divergence and phosphorus use efficiency in the soybean with a view to biodiesel production

Reina¹,

Pelúzio²,

Afférri³

et al. 2014

Rev. Ciênc. Agron.

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-The soybean has an important role in the area of biodiesel, due to having a productive potential and technical feasibility able to meet the growing demand for renewable fuels. In the agricultural year of 2009/10, four competitive trials of soybean cultivars were carried out, two on the Campus of Palmas University and the other two on the University Campus at Gurupi, with a study of genetic divergence being undertaken. At each location, the cultivars were trained under conditions of both high and low phosphorus (150 kg ha -1 P 2 O 5 and 30 kg ha -1 P 2 O 5 respectively). The experimental design employed for each trial was of randomised blocks with three replications and 11 treatments. The percentage of oil as a characteristic was studied, and the efficiency of phosphorus usage by the cultivars determined employing the methodology adapted from Fischer (1983). Genetic divergence was evaluated using multivariate procedures: the generalised Mahalanobis distance and Tocher's optimisation method for clustering. In the study of genetic divergence, each test represented a distinct variable in the multivariate model. The cultivars M-SOY 9350, M 8766RR and BR/EMGOPA 314 are the most suitable for the production of biodiesel. The hybrids M 8766RR x M 9056RR, BR/EMGOPA 314 x M 9056RR, P98R91 x M 9056RR are promising for obtaining segregating populations to be used for their oil content.

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“…Thomas and Costa (1994) reported that the number of grains per pod intrinsically attributes to the genotype. The formation of pods with viable ovules depends on the plant capacity for supplying the assimilated demand during the grain filling period (Maehler et al, 2003;Zimmer et al, 2016). In Independência -RS, the NTHREEGP for DGH, absence of direct responses on GY was observed (Table 3).…”

Section: Resultsmentioning

confidence: 99%

Path analysis of agronomic traits in soybean cultivars with determinate and indeterminate growing habits

Szareski¹,

Carvalho²,

Demari³

et al. 2018

Aust J Crop Sci

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The aim of this study was to determine associations of cause and effect agronomic traits with grain yield in contrasting growth habits of soybean genotypes, as well as to verify the magnitude of similar behaviors in different growing environments. The trials were conducted for one crop season using randomized blocks design arranged in factorial scheme, including two growing environments (Independência -RS and Tenente Portela -RS) x four genotypes (FPS Solimões RR e FPS Júpiter RR; BRS Tordilha RR and Fepagro 36 RR, 2 indeterminate and 2 determinate growing habits, respectively) in three replications. Ten important soybean yield components were evaluated. The data were subjected to individual analysis of variance for each environment and growing habits. For each environment within habits, the phenotypic path analysis was performed among the traits. The components number of pods on the main stem, number of ramifications, number of pods in the ramifications, and number of one and two-grain pods presented contrasting results in growing environments. The number of three-grain pods is among the components mostly related to grain yield for both determinate and indeterminate growing habit genotypes, regardless of the environment. The adoption of genotypes with higher weight of thousand grains may provide satisfactory results for grain yield, regardless of the growth habit and environment of cultivation.

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Qualidade de grãos de duas cultivares de soja em função da disponibilidade de água no solo e arranjo de plantas

Cited by 14 publications

References 12 publications

Size, chlorophyll retention and protein and oil contents of grains from soybean plants grown in different spatial arrangements

Size, chlorophyll retention and protein and oil contents of grains from soybean plants grown in different spatial arrangements

Genetic divergence and phosphorus use efficiency in the soybean with a view to biodiesel production

Path analysis of agronomic traits in soybean cultivars with determinate and indeterminate growing habits

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