Kim-Yen Phan-Thien - Genotype-by-environment interaction affects the essential mineral composition of peanut (Arachis hypogaea L.) kernels

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      Phan-Thien K-Y, Wright GC, Lee NA (2010) Genotype-by-environment   interaction affects the essential mineral composition of peanut   (Arachis hypogaea L.) kernels. Journal of   Agricultural and Food Chemistry (in press)


      The concentrations of 15 essential minerals (B, Ca, Co, Cr, Cu,   Fe, K, Mg, Mn, Mo, Na, Ni, P, Se, and Zn) in kernels of nine   diverse peanut genotypes, which were cultivated in five distinct   growing environments, were analyzed by inductively coupled   plasma-optical emission spectroscopy (ICP-OES) and -mass   spectrometry (ICP-MS). The effects of genotype, environment, and   genotype-by-environment (G × E) interactions were significant   (P < 0.05) for all elements excluding Cr. Genetic   control of mineral composition was demonstrated by large   (P < 0.05) genotypic differences in Ca, Mo, K, Na,   and P contents, and clustering of some genotypes in   environment-centered principal components analysis (PCA) along   axes comprising both macro (Ca, Mg, P, and K)- and microelements   (Co, Cu, Fe, Mn, and Zn). Mo and Na concentrations were strongly   influenced (P < 0.05) by the growing environment,   with very high levels measured in samples from Bundaberg. The   results confirm that that there is breeding potential for several   important minerals in peanuts, although significant G × E   interactions will complicate the response to selection. From a   practical viewpoint, combining genetic improvement with agronomic   management may be a useful strategy to consistently achieve   desirable mineral concentrations in peanut kernels.

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