Abstract
It was found with only minor exceptions that the epistasis in a cross between L. pimpinellifolium and L. esculentum can be fully accounted for by 1st order interactions. A prevalent type of interaction found was that of a heterozygous locus with another heterozygous locus. It was also found that divergent environmental conditions between experimental blocks could be manifested in a fashion similar to higher than 1st order interactions.