Biometric analysis of protein and oil contents of soybean genotypes in different environments

Josiane Isabela Da Silva Rodrigues,Klever Márcio Antunes Arruda,Newton Deniz Piovesan,Maurilio Alves Moreira,Everaldo Gonçalves De Barros,Cosme Damião Cruz

doi:10.1590/s0100-204x2014000600009

Josiane Isabela Da Silva Rodrigues, Klever Márcio Antunes Arruda + Show 4 more

Open Access

https://doi.org/10.1590/s0100-204x2014000600009

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Abstract

The objective of this work was to identify by biometric analyses the most stable soybean parents, with higher oil or protein contents, cultivated at different seasons and locations of the state of Minas Gerais, Brazil. Forty-nine genotypes were evaluated in the municipalities of Viçosa, Visconde do Rio Branco, and São Gotardo, in the state of Minas Gerais, from 2009 to 2011. Protein and oil contents were analyzed by infrared spectrometry using a FT-NIR analyzer. The effects of genotype, environment, and genotype x environment interaction were significant. The BARC-8 soybean genotype is the best parent to increase protein contents in the progenies, followed by BR 8014887 and CS 3032PTA276-3-4. Selection for high oil content is more efficient when the crossings involve the Suprema, CD 01RR8384, and A7002 genotypes, which show high mean phenotypic values, wide adaptability, and greater stability to environmental variation.

Highlights

On average, soybean (Glycine max L.) cultivars contain 40% of protein and 20% of oil, on a dry matter basis (Boerma & Specht, 2004)
Soybean (Glycine max L.) cultivars contain 40% of protein and 20% of oil, on a dry matter basis (Boerma & Specht, 2004). Both protein and oil contents are in part determined by additive gene action, with heritability values ranging from medium to high (Rodrigues et al, 2010; Jaureguy et al, 2011)
Protein content is most often negatively correlated with grain yield, whereas the association between oil content and grain yield is positive

Summary

Introduction

Soybean (Glycine max L.) cultivars contain 40% of protein and 20% of oil, on a dry matter basis (Boerma & Specht, 2004). Both protein and oil contents are in part determined by additive gene action, with heritability values ranging from medium to high (Rodrigues et al, 2010; Jaureguy et al, 2011). There is an inverse relationship between oil and protein content (Proulx & Naeve, 2009; Barbosa et al, 2011; Akond et al, 2012; Popovic et al, 2012), and this association makes it difficult to develop productive cultivars with simultaneous high contents of protein and oil. Supplemental nitrogen during seed filling increases seed protein content, whereas water stress and high

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