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Defying climate change: stability of maize populations under multiple stress conditions

AuthorsRomay Álvarez, María Cinta ; Malvar Pintos, Rosa Ana ; Campo, Laura; Álvarez Rodríguez, Ángel ; Moreno-González, Jesús; Ordás Pérez, Amando ; Revilla Temiño, Pedro
Issue DateJan-2010
PublisherCrop Science Society of America
CitationRomay MC, Malvar RA, Campo L, Álvarez A, Moreno-González J, Ordás A, Revilla P. Defying climate change: stability of maize populations under multiple stress conditions. CSA News 55 (1): 13 (2010)
AbstractIn the January—February 2010 issue of Crop Science, a group of scientists in northwestern Spain, belonging to the Spanish National Coundil (CSIC), investigate the effects of multiple stresses on maize grain yield. They evaluated 76 Spanish populations of maize, along with five checks (commercial hybrids), at three distinct locations during three years, i.e., in a total of nine environments. A statistical technique known as factorial regression was performed to obtain a biological explanation of the effect of genotype and environment as well as the magnitude of genotype X environment interaction. The existence of a significant genotype X environment interaction means that the differences among varieties are not constant when they are grown in different environments, and that indicates a lack of stability.
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