GENOTYPE, ENVIRONMENT AND GENOTYPE X ENVIRONMENT EFFECTS ON TRYPSIN-INHIBITOR IN PEAS

Amounts of trypsin inhibitor were determined in seeds from 11 pea cult ivars grown at seven European locations during the 1990 season. Activi ties ranged from 0.42 to 4.25 trypsin inhibitor units per mg flour (TI U mg(-1)). Data analysis indicated a significant environmental as well as genetic effect on the activities detected. Cultivar NSA 89-0054 di splayed the highest activities across the sites with a mean of 2.55 TI U mg(-1),, and the cultivar Allure the lowest with a mean of 0.93 TIU mg(-1). The site having the lowest mean activity was Chalons in France with O.98 TIU mg(-1) and the highest was Rothwell in the UK with 2.41 TIU mg(-1). Some cultivars were more susceptible to environmental fac tors than others.