Figure 1.

The effects of the NIL quality shifting at 10 μmol·m⁻²·s⁻¹ PPFD on the shoot length of petunia (Petunia hybrida Hort. ‘Easy Wave Pink’), taken 66 days after treatment: NI-BR, blue to red; NI-RB, red to blue; NI-RFr, red to far-red; NI-FrR, far-red to red; NI-BFr, blue to far-red; NI-FrB, far-red to blue; NI-WB, white to blue; NI-BW, blue to white; NI-FrW, far-red to white; NI-WFr, white to far-red; NI-RW, red to white; and NI-WR, white to red. The LD indicates the 16 h long-day treatment. Vertical bars indicate means ± S.E. (n = 3). Means accompanied by different letters are significantly different (p < 0.05) according to the Duncan’s multiple range test at 5% significance level.