Stability of F7:8 snap bean progenies in the Northern and Northwestern regions of Rio de Janeiro State

Abstract

The objective of this experiment was to assess the genotypes by environment interaction for eight morphoagronomic traits in thirty F7:8 snap bean superior lines and evaluate the pod yield stability. The experiments were carried out in the cities of Bom Jesus do Itabapoana, Campos dos Goytacazes and Itaocara, located in the Northern and Northwestern regions of Rio de Janeiro State, Brazil. Experiments were designed in randomized blocks with two replications, using the traditional method (Yates & Cochran, 1938) and the methods proposed by Plaisted & Peterson (1959), Wricke (1965), Kang & Phan (1991) and Lin & Binns (1988), as well. Only the average fiber content in pods revealed no significant genotype x environment interaction, whereas most of the traits showed simple interaction, including pod yield. The results obtained using the methods of Plaisted & Peterson (1959) and Wricke (1965) agreed to a far extent and had a moderate estimate (0.6131) in relation to the traditional method. Both methods highlighted genotypes with pod yield close to the general average, i.e., around 7,546.46 kg ha-1. Kang & Phan's (1991) algorithm was more efficient in optimizing the stability estimates obtained using the methods of Plaisted & Peterson (1959) and Wricke (1965) than the traditional method. Lin & Binns' (1988) procedure revealed the most stable, responsive and productive progenies. Progenies 04, 03 and 10 stood out in all environments.

Stability and adaptability of popcorn genotypes in the State of Rio de Janeiro, Brazil

“…The perfect agreement of these two methods of stability in the estimates of the parameters reveals that the indication of cultivars is the same, regardless of the method, and that using both methods is unnecessary. This result agrees with those obtained by Silva and Duarte (2006), Cargnelluti Filho et al (2009), and Vilela et al (2011.…”

“…The weighting proposed by Kang and Phan (1991) became the parameter of Plaisted and Peterson (1959), highly correlated with all parameters of Linn and Binns (1988): P ig (0.85), P if (0.82), and P iu (0.77) for GY. Similar results were obtained by Vilela et al (2011), which highlights the usefulness of the method of Kang and Phan (1991) for generating more…”

Methodology Snap bean recommendation based on different methods of phenotypic stability

“…This can be corrected, as shown in the = unfavorable Pi; ns = non-significant at 1 and 5% probability by the t-test; *significant at 5% probability; **significant at 1% probability. studies by Miranda et al (1997) However, the analysis of the performance of the strains in each environment showed that the UENF 7-10-1 strain was the most unstable strain in the best environment (Bom Jesus do Itabapoana -RJ, 2011), which corroborates the statement of Vilela et al (2011), that this method indicates the strains that are poorly adapted to favorable environments.…”

“…Thus, GE interaction causes deviations in phenotypic stability, whose estimate can be achieved by various techniques (Farias et al, 1997;Borges et al, 2000;Mauro et al, 2000;Prado et al, 2001;Rosse et al, 2002;Murakami et al, 2004;Backes et al, 2005;Silva and Duarte, 2006;Cargnelutti Filho et al, 2007;Scapim et al, 2010;Vilela et al, 2011) that can be used separately or in combination.…”

Stability and adaptability of grain sorghum hybrids in the off-season

“…For this analysis, all statistics were classified in descending order (Mekbib, 2003;Silva and Duarte, 2006;Cargnelluti Filho et al, 2007;Mohammadi and Amri, 2008;Scapim et al, 2010;Vilela et al, 2011;Pena et al, 2012).…”