Fig. 7.

Suppression of GhKOR1 reduced fibre length and crystalline cellulose content. (A and B) qRT-PCR results show a reduced GhKOR1 mRNA level in 10 DPA and 20 DPA cotton fibre, respectively, of the three transgenic lines, with little or no impact on the GhKOR2 mRNA level. (C) Fibre length at 20 DPA was reduced in the transgenic cotton as compared with that in the wild type. (D) Crystalline cellulose content in mature fibre of transgenic cotton was significantly reduced as compared with that in the wild type. * and ** indicate a significant difference from the wild type by t-test with P-values of 0.05 and 0.01, respectively. (This figure is available in colour at JXB online.)