| 摘要: |
| 用营养液培养方法比较了豌豆、黄瓜、菜豆和蚕豆植株对棚胁迫反应的异同。实验表明，缺硼处理可以抑制这些植物根和茎的生长发育，其中根的生长首先受到抑制。不同植物对缺棚的反应不同。缺硼处理后黄瓜和菜豆植株地上部生长点很快死亡，而豌豆和蚕豆植株的生长虽然受到抑制，但仍可继续生长，并可在植株下部数个节上长出侧芽，表明植物的顶端优势被削弱。缺硼处理导致黄瓜和豌豆植株不同器官中钾离子浓度明显下降，这种下降随缺棚处理时间的延长而增加。对硼在植物体中的生理功能进行了讨论。 |
| 关键词: 缺硼,生长发育,顶端优势,钾离子浓度 |
| DOI： |
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| 基金项目:国家自然科学基金，博士后科学基金 |
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| Effect of Boron-Deficiency on Growth of Shoot and Root and Concentration of Potassium in Different Plants |
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| Abstract: |
| The growth responses of different plants (pea, cucumber, kidney bean and broad bean) to boron-deficiency using solution culture were compared. It was demonstrated that under the boron-deficient condition the growth of root and shoot was inhibited, and inhibition of the root growth appeared first.There were none diferences among the plant species tested. Several days after the boron-deficiency treatment growing point of the shoot from cucumber and kidney bean plant grew abnormally, then died, but the other two plants could grow continuously, although slower than the control plants. The boron-deficiency stress could also induce outgrowth of lateral bud on the nodes in lower part of the pea plants. Under the boron-deficiency condition the K concentration in different organs of cucumber and pea plants decreased obviously. |
| Key words: boron-deficiency,growth and development,apical dominence,K~ concentration |
