Genetic improvement of soybeans in Brazil: South and Midwest regions

Abstract: Soybean [Glycine max (L.) Merril] is one of the main crops produced worldwide, and on-farm yields have increased considerably in the last decades in Brazil. We evaluated the genetic gain for agronomic, phenological, and end-use quality traits in 29 cultivars in the South Region, and in 38 cultivars in the Midwest Region in Brazil, released from 1966 to 2011. Field trials were conducted in Macroregions 1, 2, and 4, in 2016?2017, 2017?2018, and 2018?2019 crop seasons. The best linear unbiased predictors (BLUP) of the cultivars were obtained for each trait using a linear model. The BLUPs were regressed with the year of release using linear and quadratic regression models. The rates of genetic gain for seed yield ranged from 11.98 to 15.31 kg ha?1 yr?1 (0.33 to 0.42% yr?1) in the South Region, and from 13.58 to 21.84 kg ha?1 yr?1 (0.47 to 0.77% yr?1) in the Midwest Region. New cultivars presented taller plants and more seed oil content, oil and protein yield, and lower seed weight, days to flowering, days to maturity, and seed protein content than old cultivars in the South Region, although with differences between the Macroregions. In the Midwest Region, new cultivars showed higher seed oil content, oil and protein yield, and lower bottom pod height and seed protein content than old cultivars. Our results showed that breeding programs have been efficient to improve soybean yield and other traits across the years, without yield plateaus in sight.

Bibliographic Details

Main Authors:	MILIOLI, A. S., MEIRA, D., PANHO, M. C., MANDELLA, L. A., WOYANN, L. G., TODESCHINI, M. H., ZDZIARSKI, A. D., CAMPAGNOLLI, O. R., MENEGAZZI, C. P., COLONELLI, L. L., FERNANDES, R. A. T., MELO, C. L. P. de, OLIVEIRA, M. F. de, BERTAGNOLLI, P. F., ARIAS, C. A. A., GIASSON, N. F., MATSUMOTO, M. N., QUIROGA, M, SILVA, R. R., BERTAN, I., CAPELIN, M. A., MATEI, G., BENIN, G.
Other Authors:	ANDERSON SIMIONATO MILIOLI, Universidade Tecnológica Federal do Paraná/Pato Branco; DANIELA MEIRA, Universidade Tecnológica Federal do Paraná/Pato Branco; MAIARA CECÍLIA PANHO, Universidade Tecnológica Federal do Paraná/Pato Branco; LAURA ALEXANDRA MADELLA, Universidade Tecnológica Federal do Paraná/Pato Branco; LEOMAR GUILHERME WOYANN, Universidade Tecnológica Federal do Paraná/Pato Branco; MATHEUS HENRIQUE TODESCHINI, TMG Tropical Melhoramento e Genética; ANDREI DANIEL ZDZIARSKI, GDM Seeds; OTÁVIO RAMOS CAMPAGNOLLI, Universidade Tecnológica Federal do Paraná/Pato Branco; CAROLINE PATRÍCIA MENEGAZZI, Universidade Tecnológica Federal do Paraná/Pato Branco; LUCAS LEITE COLONELLI, Universidade Tecnológica Federal do Paraná/Pato Branco; ROGÊ AFONSO TOLENTINO FERNANDES, Universidade Tecnológica Federal do Paraná/Pato Branco; CARLOS LASARO PEREIRA DE MELO, CNPSO; MARCELO FERNANDES DE OLIVEIRA, CNPSO; PAULO FERNANDO BERTAGNOLLI, CNPT; CARLOS ALBERTO ARRABAL ARIAS, CNPSO; NIZIO FERNANDO GIASSON, GDM Seeds; MARCOS NORIO MATSUMOTO, GDM Seeds; MARCOS QUIROGA, GDM Seeds; RAPHAEL ROSSI SILVA, TMG Tropical Melhoramento e Genética; IVANDRO BERTAN, Syngenta; MARCIO ANDREI CAPELIN, Syngenta; GILVANI MATEI, Syngenta; GIOVANI BENIN, Universidade Tecnológica Federal do Paraná/Pato Branco.
Format:	Artigo de periódico biblioteca
Language:	Ingles English
Published:	Crop Science, v. 62, n. 6, p. 2276-2293, 2022. 2022-12-14
Subjects:	Soja, Melhoramento Genético Vegetal, Produtividade,
Online Access:	http://www.alice.cnptia.embrapa.br/alice/handle/doc/1149696 https://doi.org/10.1002/csc2.20820
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