Table 1.

(experiment 1) Prevention of salt (NaCI)-induced damage by prior application of sucrose based on necrosis, chlorophyll fluorescence, chlorophylls, and carotenoids of containerized Quercus robur L. at day 15 under outdoor conditions.

Carotenoids (c)Xanthophylls (x)Total carotenoids (x + c)
TreatmentLeaf necrosisPIChlorophyll a/bTotal chlorophyllsLuteinβ-caroteneNeoxanthinα-caroteneZeaxanthinAntheraxanthinViolaxanthin
30 g NaCl3.5 bc  4.45 a3.01 a40.4 ab  59 a11 a27 a2 a24 a  4 a12 ab139 a
60 g NaCl4.2 c  3.20 a2.99 a32.1 a  56 a  9 a22 a26 a  3 a  9 ab129 a
Sucrose 25 g + 30 g NaCl1.8 a10.6 c3.00 a71.5 d112 b30 c41 b6 d35 b13 bc29 c265 c
Sucrose 25 g + 60 g NaCl2.8 ab  9.01 bc3.17 a57.8 cd  92 b17 b39 b3 ab29 ab14 bc  7 a201 b
Sucrose 50 g + 30 g NaCl2.5 ab  8.81 bc3.21 a64.2 cd  98 b19 b48 b5 cd21 a16 c15 b222 bc
Sucrose 50 g + 60 g NaCl2.8 ab  7.23 b3.09 a55.6 bc  95 b20 b45 b4 bc24 a12 b23 c224 bc
LSD1.35  1.8571.09015.33  28.6  3.911.91.6  8.4  3.2  6.4  52.8
  • PI, chlorophylls, carotenoids, and xanthophylls values mean of six trees, five leaves per tree, leaf necrosis values mean of six trees. Means followed by different letters demonstrate a significant difference at P < 0.05 according to Fisher protected LSD test. LSD = least significant difference. — = none detected. Leaf chlorophyll content μg/g fresh leaf weight). Leaf carotenoids and xanthophylls content μg/g × 10−2 fresh leaf weight).