【摘要】 ＮＡＡ处理使大白菜根对４５Ｃａ的吸收增加，提高茎叶中４５Ｃａ的积累，尤其心叶中４５Ｃａ的积累显著提高。同时，ＮＡＡ处理下根细胞壁和叶的细胞壁成分中醛酸含量和总糖含量均明显增加，其中糖和醛酸成分中的ＸＹＬ和ＧＬＣ提高５０％。ＮＡＡ处理激活大白菜根叶细胞膜的Ｃａ２＋－ＡＴＰａｓｅ的活性。更多还原

【Abstract】 The involvement of plant growth regulator in polar transport of Ca 2+ in Chinese cabbage was studied using hydroponics system with 45 Ca radiatrazer Treatment of NAA either by root feeding increased the uptake by root, raising the 45 Ca accumulation in stems and remarkably higher than control NAA treatment also increased the folio uptake of applied 45 Ca and thus the accumulation of 45 Ca in the leaves It was interesting to note that NAA treatment also increased the contents of uronic acid and total sugar in the cell walls Xyl and Glu contents in the cell wall extracts of treated plant was 50% higher than that of control In addition, the activity of Ca 2+ ATPase in cell membrane rose under NAA treatment更多还原