| 1. | The ca levels had a great influence on p concentration in the root and petiole
钙对蜈蚣草根部及叶柄中磷浓度有显著影响。 |
| 2. | In addition , the as , p , ca subcellular distribution in it were elucidated
所得结果如下：砂培条件下，蜈蚣草具有明显的耐高砷特征。 |
| 3. | Applying as reduced p concentration in the root , but that in the frond was not affected significantly
添加砷抑制蜈蚣草根部磷的吸收，但对地上部磷浓度无明显影响。 |
| 4. | However , little research has been done in study on the genotypic difference of pteris vittata in as - accumulating ability
然而，有关蜈蚣草富集砷能力的基因型差异尚未有过系统研究。 |
| 5. | Pteris vittata l . , an indicator plant for calcareous soils , is an as - hyperaccumulator newly discovered by chen et al . in china
蜈蚣草是世界上首次报道的一种砷超富集植物，同时也是钙质土壤的指示植物。 |
| 6. | As uptake by each part of p . vittata l increased obviously with elevating as level and the ratio of pinna as concetration to root as concentration increased gradually
随着添加砷浓度的提高，蜈蚣草各部位的砷浓度都显著增加，其羽叶根的富集系数也逐渐提高。 |
| 7. | The results showed that the accumulations of fe , zn and cu were not significantly affected by ca levels , but the concentration and translocation of k , mg and mn were depressed by ca
提高介质中钙浓度对蜈蚣草吸收pe 、 cu和zn无显著影响，但对k 、 mg和mn的吸收转运均有显著拮抗作用。 |
| 8. | The results are as follows : p . vittata l . has a strong tolerant capability to high as concentration in the medium . there was no significant difference in biomass between adding as and ck treatments
当介质中砷高达0 . 2mmol l时，蜈蚣草的生长正常，与对照比较，其生物量没有显著差异。 |
| 9. | The results showed that as distributed mostly in cell walls in the case of 0 mmol / l as , moreover the percentage of ca content in cell walls was higher , which might inhibit as influxing cell
在无砷处理下，蜈蚣草植株体内的砷主要分布在细胞壁，且其根部细胞壁中钙的比重较高，有抑制砷进入蜈蚣草细胞内的趋势。 |
| 10. | As concentration in root was not affected markedly by ca levels , while that of petiole increased and that of pinna decreased significantly . adding as was benefit to take up ca by p . vittata l . in the roots and pinnae
提高溶液中钙浓度，根部砷浓度不受影响，但叶柄中的砷浓度增加，羽叶中砷浓度有明显下降，即钙明显抑制蜈蚣草羽叶中砷的吸收。 |
