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tdy1 sectors are evident 5 d after leaf emergence from whorl. A, Day 1, blade portion of the leaf has fully emerged from the whorl. B, Day 5, faint yellow-green sector is visible. C, Day 10, the sector has a lighter olive-green coloration compared to neighboring green tissue. D, Day 18, the sector is marked by anthocyanin accumulation. Asterisks in B, C, and D mark the tip of the sector.
