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Isolation and characterization of M. truncatula mutant seeds lacking physical dormancy. (A) Wild-type (WT) and mutant seed pods of M. truncatula. Mutant seedlings were able to grow out directly from a mature pod. (Scale bar, 1 cm.) (B) Imbibition of wild-type and mutant seeds in sterile water. (Scale bar, 1 mm.) (C) Percentage of impermeable (hard) seeds in water at multiple points. h, hour. (D) SEMs of mature seeds coat from wild-type and mutant. (Scale bar, 1 µm.)
