Hydration properties of different varieties of Canadian field peas (Pisum sativum) from different locations

Abstract

As a preliminary step in improving the processing of whole pea, we investigated the hydration properties of different varieties of peas from different locations. Hydration capacity and percent stone seeds were determined for six varieties of marrowfat pea at three locations, 12 varieties of green pea at four locations and 14 varieties of yellow pea at four locations for the 2005 crop year. Samples were analyzed within 6 months of the harvest date. Water uptake rates were determined for selected varieties of each type of pea. Hydration capacities ranged from 57% for CDC Striker (green) grown at Hamiota, MB to 127% for Rambo (marrowfat) grown at Outlook, SK. Low hydration capacities were observed for varieties with a high level of stone seeds and were associated with a delay in the onset of water uptake. Peas grown in Eastern Saskatchewan and Western Manitoba tended to have lower hydration capacities than those grown in Central Saskatchewan. Based on these results, varieties for which water can consistently be absorbed to an acceptable level have been identified for whole seed processing.