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. 2020 Jul 17;11:1115. doi: 10.3389/fpls.2020.01115

Figure 1.

Figure 1

Developmental growth stages of flower buds and sampling conditions during chilling accumulation in sweet cherry varieties according to the BBCH scale (Biologische Bundesantalt, Bundessortenamt und Chemische Industrie) (Fadón et al., 2015). (A) Paradormant buds and senescent leaves in autumn; (B) Endodormant buds during chilling accumulation in winter; (C) Inflorescence buds swelling and breaking from ecodormancy (BBCH 51 stage); (D) bud burst in spring; (E) Inflorescence enclosed by green scales; (F) Three to four inflorescences generated from a single flower bud; (G) Flower pedicel elongation; (H) Flowering; (I) Two seasons of bud break percentage during CH accumulation and sampling points for DNA methylation and transcriptome analysis in the low chill variety ‘Royal Dawn’ and high chill variety ‘Kordia’. The dashed line represent a complete chilling requirement, indicated as a 50% or more of bud break.