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. 2022 May 30;13:872555. doi: 10.3389/fpls.2022.872555

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Copyright © 2022 Qiu, He and Zhang.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Schematic diagram of wheat spike image capturing system and captured images. (A) Image capturing system and (B) a spike image. A spike example of Shiyou 20 was used in Figures 1–4 to explain our work.