Multiple centroid method to evaluate the adaptability of alfalfa genotypes

Revista Ceres

Moysés Nascimento¹  Adésio Ferreira¹  Ana Carolina Campana Nascimento¹  Fabyano Fonseca E Silva¹  Reinaldo De Paula Ferreira¹  Cosme Damião Cruz¹ 

关键词: principal components;    genotype x environment interaction;    Medicago sativa L.;    componentes principais;    interação genótipos x ambientes;    Medicago sativa L.;   

DOI  :  10.1590/0034-737X201562010004

来源: SciELO

【 摘 要 】

This study aimed to evaluate the efficiency of multiple centroids to study the adaptability of alfalfa genotypes (Medicago sativa L.). In this method, the genotypes are compared with ideotypes defined by the bissegmented regression model, according to the researcher's interest. Thus, genotype classification is carried out as determined by the objective of the researcher and the proposed recommendation strategy. Despite the great potential of the method, it needs to be evaluated under the biological context (with real data). In this context, we used data on the evaluation of dry matter production of 92 alfalfa cultivars, with 20 cuttings, from an experiment in randomized blocks with two repetitions carried out from November 2004 to June 2006. The multiple centroid method proved efficient for classifying alfalfa genotypes. Moreover, it showed no unambiguous indications and provided that ideotypes were defined according to the researcher's interest, facilitating data interpretation.

【 授权许可】

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