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Pesquisa Agropecuária Brasileira

versión impresa ISSN 0100-204Xversión On-line ISSN 1678-3921


OLIVEIRA, Eder Jorge de et al. Adaptability and stability of peanut genotypes of runner growth habit. Pesq. agropec. bras. [online]. 2006, vol.41, n.8, pp.1253-1260. ISSN 0100-204X.

The performance of peanut (Arachis hypogaea L.) genotypes was assessed using three different adaptability and stability methods. Eighteen lines and two cultivars, Runner IAC 886 and IAC Caiapó, were evaluated for pod yield (PY) and one hundred kernel weight (HKW), in ten field trials in the State of São Paulo, using ecovalance, Eberhart & Russel and Lin & Binns methods. Significant differences for genotype (G), environment (E) and interaction (GxE) effects were observed for both variables. The lines L123, L137 and L150 were most productive and showed stable and predictable behavior. Lin & Binns methods was more sensitive for PY and HKW, while the Eberhart & Russel method was more useful for indicating lines with broad and specific adaptability to environmental conditions. Moreover, the Lin & Binns and Eberhart & Russel methods were more informative than ecovalance in predicting the behavior of genotypes for those two characteristics. Negative correlation between PY and Pi parameter, and positive correlation between dij and wI were found. Negative correlation was observed between one HKW and Pi, and between Pi and wi.

Palabras clave : Arachis hypogaea; genotype and environment interaction; yield.

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