Fig. 1.

Phenotypes of RFL(S) and dsRNAiRFL plants. (A) Schematic diagram of dsRNAiRFL transgene. The ubiquitin promoter transcribes hairpin loop RNAs for RFL exon 1 and exon 2 segments. (B) Morphology of a flowering wild-type plant (Left, red arrowhead) regenerated through tissue culture and a dwarf nonflowering dsRNAiRFL (Right) plant of same age. (C) Distribution of days to flowering in dsRNAiRFL T₀ plants. Flowering time (x axis) is plotted against phenotype (y axis). The statistical significance is P < 0.0001for all phenotypic groups. (D) Schematic diagram of Ubi::RFL transgene. (E) A RFL(S) plant (Left) with early panicle heading (Inset, red arrowhead with closeup), compared with a wild type of same age (Right). (F) Distribution of flowering time in RFL(S) T₁ plants showing strong, moderate, and weak phenotypes.