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

Amounts of trypsin inhibitor were determined in seeds from 11 pea cultivars grown at seven European locations during the 1990 season. Activities ranged from 0.42 to 4.25 trypsin inhibitor units per mg flour (TIU mg(-1)). Data analysis indicated a significant environmental as well as genetic effect on the activities detected. Cultivar NSA 89-0054 displayed the highest activities across the sites with a mean of 2.55 TIU 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 factors than others.