CAJ | 학술논문

试验采用不同浓度海水对主栽品种‘宝岛蕉’幼苗进行不同天数水培处理，研究其根系活力及离子含量的响应。结果表明，海水在一定程度上构成盐分胁迫，盐胁迫逆境下处理12 d后，根系活力20%处理比对照显著下降19.49%，‘宝岛蕉’根系活力均随着胁迫程度和胁迫时间的增加而显著下降；5%处理促进叶片Ca2+吸收，比对照显著增加10.38%，K+/Na+比值显著下降，说明盐分胁迫可能引起K+叶片与根系之间的运输障碍，导致离子平衡被破坏。因此，海水对根系影响显著于叶片，低浓度(5%)海水可在一定程度上提高‘宝岛蕉’幼苗耐盐能力，高浓度(10%和20%)海水处理对‘宝岛蕉’幼苗构成盐害。‘宝岛蕉’可通过离子含量变化的调节机制适应一定浓度海水环境。
시험채용불동농도해수대주재품충‘보도초’유묘진행불동천수수배처리，연구기근계활력급리자함량적향응。결과표명，해수재일정정도상구성염분협박，염협박역경하처리12 d후，근계활력20%처리비대조현저하강19.49%，‘보도초’근계활력균수착협박정도화협박시간적증가이현저하강；5%처리촉진협편Ca2+흡수，비대조현저증가10.38%，K+/Na+비치현저하강，설명염분협박가능인기K+협편여근계지간적운수장애，도치리자평형피파배。인차，해수대근계영향현저우협편，저농도(5%)해수가재일정정도상제고‘보도초’유묘내염능력，고농도(10%화20%)해수처리대‘보도초’유묘구성염해。‘보도초’가통과리자함량변화적조절궤제괄응일정농도해수배경。
The research used different concentrations of seawater on the Baodao banana seedings to study root activity and ion content test with hydroponics of different days. Results showed that seawater lead to salt stress to some extent. The root activity of 20%treatment was less than the control group by 19.49%under salt stress adversity for 12 d. The root activity decreased significantly with the increase of stress degree and stress time. 5%treatment promoted the leaf absorption of Ca2+, and the Ca2+content was higher than the control group with 10.38%. Significant decreased K+/Na+ratio indicated that salinity stress may cause the K+transport barriers between the blades and the roots, and so lead to the destruction of ion balance. Therefore, the impact on the root of the seawater is greater than that on the blade. Low concentration (5%) of seawater can increase the salt tolerance of Baodao banana seedling, and the high concentration (10%and 20%) of seawater on the seedlings would lead to salt damage. Baodao banana can adapted to the marine environment with a certain concentration through the regulatory mechanisms of the ion content.