NaMYB8-silenced plants show normal growth and reproductive fitness. A and B, CP (A) and DCS (B) contents in reproductive tissues of wild-type (WT) and ir-MYB8-810 transgenic lines determined by HPLC. B, Flower buds; EB, elongating flower buds; F, open flowers; GC, green capsules with seeds; FM, fresh mass; nd, not detected. C, Mean ± se stalk lengths measured throughout plant development in the glasshouse, starting from day 41 after germination of plants. Asterisks represent significantly different growth parameters between wild-type plants and two ir-MYB8 homozygous lines at specific time points at P < 0.01 (**) and P < 0.001(***; n = 12). D, Mean ± se lifetime seed capsules produced by plants determined 98 d after germination. No statistically significant differences were observed. E, Schematic representation of the seed capsule position on the uppermost lateral branch used for seed mass determinations. T0, Seed capsule located nearest to the branching point on the top most lateral branch; T1, most distal seed capsule on the same branch. F, Mean ± se seed mass in representative seed capsules at T0 and T1 positions measured in 98-d-old plants. No statistically significant differences were observed.