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- Author or Editor: Dana Drennan x
Statistics were developed to measure the relative importance of genotype × environmental (GE) interactions. Estimates indicate that as much as half of the genetic variance for cut-flower yield in the Davis Population of Gerbera may be attributable to GE interactions. The bias this causes in broad-sense heritability estimates averaged 10.3% ± 2.97% for single-factor interactions; 15.6% ± 3.52% for 2-factor interactions, and 26.8% ± 3.45% for 3-factor interactions. The mean unadjusted broad-sense heritability for cut-flower yield in the same experiments was 37.1% ± 6.54%. Therefore, response equations that do not take interaction bias into account will overestimate selection potential.