Integrated method for adaptability and phenotypic stability analysis

Abstract

ABSTRACT. The objectives of this study were a description of the Centroid Method, which is used to investigate the phenotypic adaptability of genotypes and the inclusion of new ideotypes therein, creating the Integrated Method for adaptability and phenotypic stability analysis, as well as a comparison of the two methods in a study example. As an applied example of the new proposal, grain yield data of 14 soybean genotypes from experiments at four locations in the state of Minas Gerais were used. In a comparison, the qualitative and quantitative gains of the Centroid Method with seven ideotypes were higher than of the Centroid Method with only four ideotypes for adaptability analysis. With the incorporation of the new ideotypes into the Centroid Method other concepts for the adaptability and phenotypic stability analysis are represented and the modified method was designated "Integrated Method of Adaptability and Stability Analysis". CS 801 genotype was classified as the genotype with best adaptability to the environments Viçosa, Florestal, São Gotardo and Rio Paranaiba. The stability of the genotypes CAC 1, CS 741, Splendor, UFV 16, UFV 19, UFVP IV-6, UFVP IV-8, UFVP V-15, UFVP V-7, and UFV98700739 was classified as general.

Adaptability and stability of wheat cultivars sown on different dates in West Paran

“…However, several studies comparing methodologies of genotypic stability and adaptability observed low Table 4. Estimation of adaptability and stability parameters for grain yield of ten wheat cultivars, based on different methodologies: Traditional (Yates and Cochran, 1938), Eberhart and Russell (1966), Lin and Binns (1988) modified by Carneiro (1998) and Integrated (Vasconcelos et al, 2011 correlation between these methodologies (Nascimento et al, 2013;Pereira et al, 2009;Silva and Duarte, 2006) indicating that combined use may provide additional information on phenotypic stability of cultivars.…”

“…After harvest, material was subjected to mechanical threshing for grain yield determination. Concepts and procedures of classical methods of analysis of adaptability and stability were introduced based on following methods: Traditional (Yates and Cochran, 1938), Lin and Binns (1988) adapted by Carneiro (1998), Eberhart and Russel (1966) and Integrated (Vasconcelos et al, 2011). The grain yield data were submitted to normality and homogeneity of variance test and afterwards, data were subjected to a joint analysis of variance, 30.28 --* and **Significant on F-test at 5 and 1% of probability level, respectively.…”

“…To fulfill this need, Vasconcelos et al (2011) Vasconcelos et al (2011) renamed this method to Integrated method. Lin and Binns (1988) developed a non-parametric method to evaluate adaptability and stability.…”

“…In this context, centroid method, based on principal components, can overcome issues of regression-based methods, because in centroid method, the similarity between genotypes and ideotypes pre-established is calculated by Cartesian distance, in order to rank genotypes in relation to ideotypes. The ideotypes are ideotype with maximum general adaptability (ideotype I), ideotype with maximum specific adaptability to favorable environments (ideotype II), ideotype with maximum specific adaptability to unfavorable environments (ideotype III) and ideotype with a minimal adaptability (ideotype IV) (Vasconcelos et al, 2011).…”

Selection and recommend of quinoa (Chenopodium quinoa) genotypes based on the yield genotypic adaptability and stability

“…For analysis of the yield adaptability and stability there are several methods, standing out: Lin and Binns method, Eberhart and Russell (Eberhart & Russell 1966); Cruz, Torres and Vencovsky (Cruz et al, 1989), Integrated method (Vasconcelos et al, 2011), AMMI -Additive Main effects and Multiplicative Interaction model (Gauch, 2006). Another method based on mixed models, that has often been employed with this type of analysis, is the HMRPGV Rev.…”