Genotypic variation of agronomic traits as well as concentrations of Fe, Zn, P and phytate in soybean cultivars

Abstract

The staple diet of most of the world population is provided by cereal, which present levels of iron (Fe) and zinc (Zn) below the nutritional demand of humans. Other factors that may substantially interfere for the low intake of Fe and Zn are the anti- nutritional factors present in the edible parts of plants, such as heavy metals and phytate. Hence, the objective of this study was to evaluate the genotypic variation in terms of yield (kg ha-1), plant height, insertion height of first pod, as well as concentrations of Fe, Zn, phosphorus (P) and the anti-nutrient phytate in grains of 24 soybean cultivars and to identify cultivars with potential for biofortification. The field experiment was conducted in Rio Verde, state of Goiás by the technological center of COMIGO. The experimental design used in the study was a randomized block design with 24 treatments and three replications. The results showed that there is genotypic variation for grain yield (kg ha-1), plant height, and insertion height of first pod, as well as for the concentrations of Zn, Fe, P and concentration of anti-nutient phytate in grains among the soybean cultivars. Non-significant or low correlations were found among the evaluated parameters except for the relationship between P and phytate (r=0.733). The diversity found among soybean cultivars offers genotypes such as 8197RR, M 7908RR and BRS 262 with potential to develop cultivars with better ability to accumulate nutrients in grains.

Organic fertilization in the production and chemical composition of non-conventional leafy vegetables

“…The concentrations of Mn and Fe in the studied non-conventional vegetables are above those normally found in leafy vegetables (Trani et al 2014). These results corroborate those obtained by Silva et al (2017), Silva et al (2018a) and Botrel Nutritional deficiencies, such as of Fe and Zn, are frequent in the population (Possobom et al 2015, Oliveira et al 2016, and the studied nonconventional vegetables may be a good source of nutrients for the population diet, especially that of low income, being an alternative to food security. Regarding organic fertilization, according to most the results obtained in this study, it seems that the dose of 20 t ha -1 of cattle manure is the most suitable one for the non-conventional vegetables R. acetosa, S. byzantina and L. canadensis.…”

Genome‐wide association study to identify single nucleotide polymorphisms associated with Fe, Zn, and Se concentration in field pea

“…Yield had a significant positive correlation with Fe but significant negative correlation with Zn in lentil and chickpea (Vandemark et al., 2018). Iron and Zn concentration showed significant negative correlations with grain yield in wheat (Morgounov et al., 2007), and soybean (Oliveira et al., 2016). It has been hypothesized that when the yield increases, the concentrations of mineral elements in produce decreases because of a dilution effect caused by plant growth rates exceeding the ability of plants to acquire these elements; both environmental and genetic factors affect this phenomenon (Davis, Epp, & Riordan, 2004; Jarrell & Beverly, 1981; White et al., 2009).…”

Nutrientes em sementes de soja em função da aplicação de zinco

“…Em feijão, o tratamento de sementes com Zn influencia na qualidade fisiológica e teor foliar (Dorr et al, 2017). Ainda, ao se considerar o potencial de acúmulo de nutrientes, deve-se considerar fatores genéticos (Oliveira et al, 2016) gerando benefícios no desenvolvimento de plantas e para alimentação humana.…”