Abstract
Seed coat rupture known also as ‘fish face’, is a common seed problem in snap beans. Lines form the cross Tendercrop × Streamliner were classified as high (H), medium (M), and low (L) in their susceptibility to ruptured seed coat and were used as parents in an inheritance study. Crosses of H × L gave an F2 segregation pattern of 1:2:1 for H:M:L classes and this was confirmed by F3 data. The results suggest that seed coat rupture is due to a single incompletely dominant gene (Tr) with 25–50% penetrance. Tr is not linked with seed color or maternal factors.
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