Cereal Chem 64:86-90   |  VIEW ARTICLE

Variability in Dehulling Quality of Cowpea, Pigeon Pea, and Mung Bean Cultivars Determined with the Tangential Abrasive Dehulling Device.

A. O. F. Ehiwe and R. D. Reichert. Copyright 1987 by the American Association of Cereal Chemists, Inc. 

The Tangential Abrasive Dehulling Device was used to investigate the dehulling quality of 11 cowpea (Vigna unguiculata L. Walp.), 23 pigeon pea (Cajanus cajan L. Millsp.), and 24 mung bean (Vigna radiata L. Wilczek) cultivars. Differences (P less than 0.05) in dehulling quality of cultivars within each species were observed. The yield (47.8-90.2%) and dehulling time (0.08-6.18 min) of cowpea varied widely suggesting that it may be desirable to monitor these characteristics in a cowpea breeding program. Some cultivars of cowpea, including 1836-013J, 2724-01F, and 3871-02F, exhibited very good dehulling quality (high yield and short dehulling time). The yield (79.0-83.8%) and dehulling time (0.48-1.78 min) of pigeon pea did not vary as widely as cowpea, and most cultivars exhibited good dehulling quality. The dehulling quality of the mung bean cultivars was generally poor because of low yields (58.2-73.8%) and long dehulling times (2.00-3.50 min). The major seed factors responsible for good dehulling quality of these legumes included resistance to seed splitting during dehulling and a seed coat loosely bound to the cotyledon.