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. 2021 Feb 26;10(3):446. doi: 10.3390/plants10030446

Figure 3.

Figure 3

Cytokinin (CK) contents of in vitro growing maritime pine plants derived from control (NP) or primed megagametophytes (P37 and P50), before (T0) and after 3 h of heat stress treatment at 37 °C or 50 °C. Data are mean ± SE of six replicates and 15 compounds grouped by type (a) or conjugated structure (b). Means separation (Kruskal-Wallis test) for total CK content (a) and for CK bases content (b) within each group of plants, are also shown. For each provenance, values followed by the same letter were not different according to Kruskal-Wallis test.