Biometrical analyses of some economically important characters in Antirrhinum majus

Summary The experiment described in this paper was designed to measure some of the genotype-environment interactions in Antirrhinum majus and the emphasis has been upon characters which are of economic importance. — Seven F₁ hybrids were grown in 27 different environmental conditions, consisting of 3 levels of nitrogen and 9 sowing dates. Analysis of variance followed by regression analysis and the partitioning of the variation into its genetic, environmental and interacting components were employed. — The practical applications of these methods by the grower and plant breeder, are discussed.On postdoctoral leave from the Hebrew University of Jerusalem.