Open AccessEstimativas de parâmetros genéticos para ferro, zinco, magnésio e fósforo em grãos de feijão
Author(s) -
Juliana Sawada Buratto,
Vânia Moda-Cirino
Publication year - 2017
Publication title -
comunicata scientiae
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.238
H-Index - 12
eISSN - 2177-5133
pISSN - 2176-9079
DOI - 10.14295/cs.v8i1.1073
Subject(s) - heritability , cultivar , zoology , selection (genetic algorithm) , genetic gain , analytical chemistry (journal) , zinc , horticulture , chemistry , mineralogy , biology , environmental chemistry , genetic variation , genetics , biochemistry , organic chemistry , artificial intelligence , computer science , gene
Information about genetic parameters is required for the development of cultivars with higher nutritional value. In this sense, this study aimed to estimate the following genetic parameters: genetic variances, heritability coefficients in narrow and broad sense and predict the selection gain for the Fe, Zn, Mg and P contents in common bean grains. The crosses were made between cultivars: FT Nobre x IPR Gralha and Diamante Negro x IPR Chopim. The genitors (P1 and P2) were crossed resulting in F1 and F2 generations and backcrosses BC1 (P1 x F1) and BC2 (P2 x RC2). The mineral contents of Fe, Zn, Mg and P in grains were measured by nitric-perchloric digestion using atomic emission spectrometry coupled with plasma (ICP-OES). The predicted gains for the first cycle of selection were positive, indicating the viability of the increaseof the minerals Fe, Zn, Mg and P levels on common bean grains using classical breeding methods. The prediction gains obtained in the first cycle of selection resulted in values ranging from 3.24% to 15.48% for Mg and Fe, respectively. Heritability estimates in narrow sense ranged from 29.48% to 62.04% and the broad range sense heritability ranged from 45.14% to 76.36%.