Selection of common bean lines with high grain yield and high grain calcium and iron concentrations

Nerinéia Dalfollo Ribeiro,Evandro Jost,Sandra Maria Maziero,Daniele Piano Rosa,Lindolfo Storck

doi:10.1590/s0034-737x2014000100010

Nerinéia Dalfollo Ribeiro, Evandro Jost + Show 3 more

Open Access

https://doi.org/10.1590/s0034-737x2014000100010

Copy DOI

Abstract

Genetic improvement of common bean nutritional quality has advantages in marketing and can contribute to society as a food source. The objective of this study was to evaluate the genetic variability for grain yield, calcium and iron concentrations in grains of inbred common bean lines obtained by different breeding methods. For this, 136 F7 inbred lines were obtained using the Pedigree method and 136 F7 inbred lines were obtained using the Single-Seed Descent (SSD) method. The lines showed genetic variability for grain yield, and concentrations of calcium and iron independently of the method of advancing segregating populations. The Pedigree method allows obtaining a greater number of lines with high grain yield. Selection using the SSD method allows the identification of a larger number of lines with high concentrations of calcium and iron in grains. Weak negative correlations were found between grain yield and calcium concentration (r = -0.0994) and grain yield and iron concentration (r = -0.3926). Several lines show genetic superiority for grain yield and concentrations of calcium and iron in grains and their selection can result in new common bean cultivars with high nutritional quality.

Highlights

The human body requires many nutrients to keep its metabolic needs (Welch & Graham, 2004, White & Broadley, 2005)
The variance analysis showed significant effect of the inbred lines for each method of advancing segregating populations in relation to grain yield and calcium and iron concentrations, indicating different responses of the common bean lines obtained under each method
Costa et al (2002) evaluated F6 lines obtained from different crosses and found that the Pedigree method made it possible to select a higher number of lines with high grain yield

Summary

Introduction

The human body requires many nutrients to keep its metabolic needs (Welch & Graham, 2004, White & Broadley, 2005). Mineral deficiency is often observed in children and adults and affect approximately three billion people worldwide (FAO, 2011). The common bean (Phaseolus vulgaris L.) has a high mineral concentration in grains, especially calcium and iron (Mesquita et al, 2007). The calcium concentration in common bean grains showed genetic variability and values ranging from 0.30 to 2.80 g kg-1 dry matter (DM) were observed among 21 inbred lines cultivated in Brazil (Mesquita et al, 2007). Iron concentration varies among common bean cultivars and values ranging from 8.9 to 112.9 mg kg-1 DM were observed among 29 Andean and Middle American germoplasm evaluated in the United States (Akond et al, 2011). The iron concentration in common bean grains of Middle American genotypes was 11.3% higher than the Andean genotypes (Talukder et al, 2010)

Objectives

Methods

Results

Conclusion