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Fig. 1 | BMC Plant Biology

Fig. 1

From: Regulation of wound ethylene biosynthesis by NAC transcription factors in kiwifruit

Fig. 1

Different models of ripening behavior in kiwifruit and tomato. In kiwifruit, the competence to ripen occurs well before ripening initiation. Ripening initiation and the initial softening period (ripening phase 1) are accompanied by non-autocatalytic ethylene production (system-1) and are separated from the late ripening period (ripening phase 2) that is accompanied by autocatalytic ethylene production (system-2). Kiwifruit ripening stages are defined in Richardson et al. (2011) [27] and tomato ripening stages in Feller et al. (1995) [28]. The BBCH plant development scale is described in Hess et al. (1997) [29]. In tomato, the competence to ripen (responsiveness to exogenous ethylene) coincides with the mature green (MG) stage and is closely followed by ripening initiation and autocatalytic ethylene production and softening. MG: mature green, B: breaker, O: orange, R: red

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