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Appendix 1

Relationships between chlorophyll content (Chla, μ molChl m− 2) and SPAD values (SPAD-502, Minolta, Osaka, Japan). Chlorophyll content was measured on 2.3 cm2 leaf discs after extracting in DMSO (n = 35).
Relationships between chlorophyll content (Chla, μ molChl m− 2) and SPAD values (SPAD-502, Minolta, Osaka, Japan). Chlorophyll content was measured on 2.3 cm2 leaf discs after extracting in DMSO (n = 35).