Figure 4.

Phenotypes of knockout mutants and complemented plants of GNP1. (a) Plant and panicle architecture of sd1 and gnp1 single and double mutants. Bar = 10 cm. (b–e) Panicle traits of single and double mutants, showing (b) panicle length; number of (c) primary and(d) secondary branches per panicle; and (e) number of grains in the main panicle. Mean ± SE, n = 20. (f) Gene structure with different promoters. (g) Plant architecture and panicle morphology of complemented plants with different promoters. Bar = 10 cm. (h–k) Panicle traits of complemented plants, showing (h) panicle length; number of (i) primary and (j) secondary branches per panicle; and (k) number of grains in the main panicle. Mean ± SE, n = 3. Differences in wild‐type plants indicated *P < 0.05 and **P < 0.01, t‐test.