“…This is not surprising since ADH activity is controlled in this population (Barnes and Birley, 1978) as well as in other populations (McDonald and Ayala, 1978;Laurie-Ahlberg, Maroni, Bewley, Lucchesi and Weir, 1980), by loci which are located upon different chromosomes (I and III) from that upon which the Adh structural gene (chromosome II) is located. (Goldberg, 1980) and Langley Genotype-environment interaction for ADH activity has been previously assessed in the set of inbred lines by the methods of biometrical genetics (Perkins and Jinks, 1968;Pooni and Jinks, 1980). In summary, the methods compare the performance of the set of inbred lines in a set of different environments, the measure of various environments being in this case purely biological and provided by the average performance of all lines.…”