| Effects of NaCl stress on physiological characteristics and nuclear morphology in roots of Raphanus sativus L. seedlings |
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| DOI：10.7606/j.issn.1000-7601.2012.06.21 |
| Key Words: Raphanus sativus L. salt stress physiological characteristics apical cell nuclear morphology |
| Author Name | Affiliation | | DAI Rongchun | College of Life Sciences, Fujian Normal University, Fuzhou, Fujian 350108, China | | HE Wenjin | College of Life Sciences, Fujian Normal University, Fuzhou, Fujian 350108, China | | LIN Ronghua | College of Life Sciences, Fujian Normal University, Fuzhou, Fujian 350108, China | | ZHANG Ziyan | College of Life Sciences, Fujian Normal University, Fuzhou, Fujian 350108, China | | CHEN Youqiang | College of Life Sciences, Fujian Normal University, Fuzhou, Fujian 350108, China |
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| Abstract: |
| Using Raphanus sativus L. seedlings as material, root growth rate, root activity, POD activity and rela-tive conductivity in roots were tested under 0.15 mol/L NaCl stress for different time, and nuclear morphological alter-ation of apical cells was also observed. The results showed that root growth rate and root activity of Raphanus sativus L. seedlings declined with the extension of NaCl stress, and they both declined rapidly when stress time was over 48 h. In contrast, POD activity and relative conductivity in roots increased constantly to the max during the NaCl stress by 12 h to 24 h, and then both declined when stress time was extended. Nuclear
morphology in apical cells varied from circle to ir-regular shapes, and the characteristics of apoptosis appeared in different degrees. |
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