Simultaneous selection in beans for stability and high agronomic performance

Abstract

ABSTRACT. The objective of this study was to select common bean cultivars based on their stability for flowering, cycle, insertion of the first pod, grain yield, and high agronomic performance. Twenty experiments were carried out between 2000 and 2014, during two growing seasons, in Rio Grande do Sul, Brazil. The Eberhart and Russel, and Lin and Binns methods, as well as the additive main effect and multiplicative interaction (AMMI) method, were used to evaluate the stability of flowering, cycle, insertion of the first pod, and grain yield of 10 common cultivars in all experiments. The Eberhart and Russel, Lin and Binns, and AMMI methods identified the Carioca cultivar as the most stable for insertion of the first pod, and the Iraí cultivar as the most instable for flowering and cycle. The Pérola cultivar shows stability for flowering, cycle, and insertion of the first pod, and Guapo Brilhante is stable for grain yield, according to the Lin and Binns method. Controlled crossing between Pérola and Guapo Brilhante is recommended for the development of new common bean cultivars with greater stability for semi-early cycle, architecture of upright plant, and grain yield.

Higher-precision experimental statistics for the selection of early and upright common bean lines

“…CEV values ranged from 1.30 (experiment 11) to 12.26% (experiment 20) for flowering. Similar CEV values were observed when evaluating flowering in common bean cultivar competition experiments (Balcha, 2010;Bertoldo et al, 2015;Ribeiro et al, 2016). LSD had similar variation to that of CEV, ranging from 1.16 (experiment 11) to 13.15% (experiment 20).…”

“…In these experiments, low experimental precision was observed for flowering, according to the classifications of Resende and Duarte (2007) (Fc < 2.00 and SA < 0.70) and Cargnelutti Filho and Storck (2007) (h 2 < 49.00%). Similarly, when there was no differentiation of common bean genotypes for flowering by the F-test, low experimental precision was verified by the Fc, hr 2 and SA statistics Ribeiro et al, 2016).…”

“…However, more precise experimental statistics are required for bean breeding programmes to obtain increasing genetic gains in the selection process of superior lines. The coefficient of experimental variation (CEV) has been widely used in common bean experiments to evaluate the experimental precision of the traits related to earliness and upright plant architecture (Cargnelutti Filho, Storck, & Ribeiro, 2009;Cargnelutti Filho, Ribeiro, & Burin, 2010;Jost, Ribeiro, Rosa, Possobom, & Maziero, 2014;Bertoldo, Coutinho, Pelisser, Favreto, & Silva, 2015;Maziero, Ribeiro, & Facco, 2016;Ribeiro et al, 2016). Nevertheless, the CEV and the least significant difference between the genotype means using Tukey's test (LSD) are not the most adequate statistics to evaluate the genetic superiority of lines in value of cultivation and use (VCU) experiments (Resende & Duarte, 2007;Cargnelutti Filho et al, 2009;Benin, Storck, Marchioro, Franco, & Schuster, 2013).…”

“…The results of F-test values for genotype (Fc), heritability (h 2 ), and selective accuracy (SA) statistics have been used to identify more precise experiments for the selection of common bean genotypes (Cargnelutti Filho et al, 2009;2010;Ribeiro et al, 2016). However, for the traits related to earliness and upright plant architecture, no experimental precision classes have been reported in the literature for CEV, LSD, Fc, h 2 , and SA.…”

Research Article Upright plant architecture traits and their relationship with grain yield in the selection of Mesoamerican common bean lines cultivated at low altitude

“…The cultivars BRS Valente and Guapo Brilhante were included as a control of black beans due to their upright plant architecture. Guapo Brilhante also was stable for grain yield in southern Brazil (Ribeiro et al, 2016).…”