“…This is probably because of the difference in the ratio of the various Pchlide forms, that is, the photoactive, long‐wavelength Pchlide forms are dominating in the leaves (Böddi et al 1992, Shibata 1957, Schoefs and Franck 1993, Schoefs et al 2000). This way the greening of the leaves is faster then that of the stems, in which the short‐wavelength, non‐enzyme bound, monomeric forms of Pchlide are predominant (Böddi et al 1994, 1998, 2004, McEwen et al 1994, Seyedi et al 2001, Skribanek and Böddi 2001, Skribanek et al 2000, Terry et al 2001, Virgin 1996, Virgin and Sundqvist 1992). The etioplasts of the stems have small PLBs and their greening is slow (Böddi et al 1996, 2005, McEwen et al 1996, Seyedi et al 2001, Skribanek and Böddi 2001, Virgin 1993, 1996).…”