关键词: 葡萄, 黄化, 叶绿素, 活性铁, 全铁, 石灰性土壤, 缺铁病

Abstract: The studywas carried outwith table grapevine p lants grown on calcareous soil under field con
ditions. Chlorophyll concentration, active iron contents and total iron contents of leaves from different positions
of 82year2old table grapevine ( three Vitis vinifera, Blush Seedless, Muscat Hamburg and Rizamat; three Euro
American hybrid, J ingya, Fujiminori and Zizhenxiang) were measured and analyzed their relationship. The
results indicated that contents of chlorophyll, active and total iron gradually increased from young leaves to
muture leaves. The contents of chlorophyll of chlorotic leaveswere significantly lower than that of green ones.
The active iron content of leaves at first and second position of severely chlorotic Euro2American hybrid was re
markably lower than that of normal Vitis vinifera. Chlorotic leaves have same or higher iron concentration than
green oneswhen compared with the total iron content of leaves at first and second position of different culti
vars, while the total iron content of leaves at forth position of Blush Seedless andMuscat Hamburgwere signif
icantly higher than ones of chlorotic cultivars. Chlorophyll contentwas negatively correlated to degree of chlo
rosis, the active and total iron contents were significant positively correlated to chlorophyll content.

Key words: Grapevine, Chorosis, Chlorophyll, Active iron, Total iron, Calcareous soil, Iron deficiency