Expression profile of SlMADS1 in tissues of cv Ailsa Craig and nonripening mutant fruits. A, Expression of SlMADS1 in cv Ailsa Craig as indicated: Se, seedlings; Rt, roots; St, stems; Yl, young leaves; Ml, mature leaves; Sl, senescent leaves; Sp, sepals of flower in anthesis; Pe, petals of flower in anthesis; Ca, carpels of flower in anthesis; Sta, stamens of flower in anthesis; IMG, immature green fruits; MG, mature green fruits; B, breaker fruits; B+4, 4 d after breaker fruits; B+7, 7 d after breaker fruits. B, Expression of SlMADS1 in cv Ailsa Craig (AC++), Nr, and rin fruits. C, Expression of SlMADS1 in sepals of cv Ailsa Craig. BPS, Sepals of flowers before pollination; IPS, sepals of flowers in pollination; APS, sepals of flowers after pollination.