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. 2020 Jan 14;10:275. doi: 10.1038/s41598-019-57145-9

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© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Stages of Petunia flower bud development in wild type and iRNA::PhGI1 T1 lines. Stages (S) 1–7 represent flower development between 27 to 1 days before anthesis and stages (S) 8–11 represent flowers from 0 to 3 days after anthesis. (a) Stages S1 and S2 are given as scanning electron micrographs of the inflorescence apex of Petunia during early stages of development from a wildtype plant (S1) and a plant of iRNA::PhGI1 T1 line (S2). Stigma (St), style (st), ovary (ov), sepal (se), petal (pe), anthers (an). (b) Stages S8–11 of flower buds taken from a position within the plant that develops into a normal flower. (c) Stage S3 of flower buds taken from a position within the plant that develops into an aborted flower.