UFUS-Imperial: nova cultivar de soja para o Estado de Mato Grosso

Hamawaki, Osvaldo Toshiyuki; Polizel, Analy Castilho; Juliatti, Fernando Cézar; Hamawaki, Raphael Lemes; Brunetta, Patrícia

doi:10.1590/s0100-204x2007000100020

Cited by 3 publications

(2 citation statements)

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“…Traits as number of productive nodes, number of pods with one and two grains, and yield, have shown H 2 values lower than 70%. These results might be justified by the fact that these are quantitative traits, which are driven by many genes and subject to higher environmental influences (HAMAWAKI et al, 2010).…”

Section: Resultsmentioning

confidence: 99%

Selection of lineages, genetic parameters, and correlations between soybean characters

Vianna¹,

Nogueira²,

Hamawaki³

et al. 2019

Biosci. J.

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Soybean has great economic importance in the world accordingly, this legume has been exploited in breeding programs aiming to provide cultivars with extensive grain yield, tolerant to pests and diseases, and adapted to different soil and climatic conditions. Therefore, the objectives of this study were to evaluate genetic parameters and correlations between soybean traits to select lineages to increase yield and improve agronomic traits. Experiments were carried out on the Capim Branco farm, of the Federal University of Uberlândia, harvest in 2016/2017. Fifteen morph-agronomic traits were assessed on twenty-two genotypes in a randomized complete block design with three replicates. Agronomic traits related to cycle, height, number of nodes and total pods have shown coefficients of genotypic determination higher than 70%. In addition, coefficients of variation of the number of days to the flowering and number of days to maturity were equal to 3.79% and 4.87%, respectively, indicating high homogeneity of data and low random variation. Among evaluated traits, ten have presented the ratios between the coefficient of genetic variation (CVg) and coefficient of environmental variation (CVe) above one, demonstrating high success likelihood in the selection of these traits. Fifteen genotypes have presented grain yield above the national average of the 2016/2017 harvest, which was 2882 kg h -1 . Significant phenotypic correlations between traits ranged from -0.49 to 0.89, however genotype correlation was higher than the phenotypic ones, indicating that genetic factors have contributed more than the environmental factors. Traits related to cycle, height, and the number of nodes in the main stem have presented measures of H² and CVg / CVe with extensive magnitudes, evidencing the possibility of selection lineages having superior traits in the Soybean Breeding Program of the Federal University of Uberlândia. To increasing grain yield, the traits Number of pods of three grains and the Total number of pods were identified as appropriated to indirect selection based on the phenotypic and genotypic correlations. The 2lP14, B2P1, B2P28, B1P33 and 2AP11 lineages stand out as superior genotypes to direct selection.

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Section: Resultsmentioning

confidence: 99%

Selection of lineages, genetic parameters, and correlations between soybean characters

Vianna¹,

Nogueira²,

Hamawaki³

et al. 2019

Biosci. J.

Self Cite

View full text Add to dashboard Cite

show abstract

“…The indication of new cultivars with differentiated value-adding features has been a major tool to help farmers increase stability and yield. The high yield levels of soybean, with values above 3300 kg ha -1 in the major producing regions in the Midwest of the country, has substantiated competitiveness of Brazilian soybean on the international market (Hamawaki et al 2007).…”

Section: Introductionmentioning

confidence: 99%