Figure 11.
Growth of the wild-type and ygl18 plants under different light conditions in the natural field. (A) Three different light conditions were generated by the solar motion and the tree shadow. Condition 1 had about 4 h' time in sunlight (8:30–12:30), about 3 h' light intensity over 1,000 μmol m−2 s−1, and a peak light intensity of about 1,500 μmol m−2 s−1. Condition 2 had about 8 h' time in sunlight (8:30–16:20), about 5 h' light intensity over 1,000 μmol m−2 s−1, and a peak light intensity of about 1,600 μmol m−2 s−1. Condition 3 had about 8 h' time in sunlight (8:15–16:20), about 7 h' light intensity over 1,000 μmol m−2 s−1, and a peak light intensity of over 2,000 μmol m−2 s−1. (B) Growth status of the wild-type and ygl18 plants under above three light conditions. Eight-day-old seedlings were planted in the fields and encountered one cloudy day and subsequent 18 sunny days (condition 1, 2, and 3). Plants were observed after 0, 9, and 18 days in sunlight (DIS). The black arrows indicate the withered leaves. (C) Chlorophyll contents of the wild-type and ygl18 plant leaves at 9 DIS. Data represent the mean ± SD of three biological replicates (one-way ANOVA analysis); FW, fresh weight. (D) Plant height of the wild-type and ygl18 plants at 0, 9, and 18 DIS under above three conditions. Data represent the mean ± SD of over eight independent plants (Student's t-test: ***P < 0.0005). ND, not detected for dead plants. Different letters indicate values are statistically different based on a one-way ANOVA analysis.