摘要
选取树皮、泥炭、水苔、陶粒4种材料,净化处理后按8种不同配比分别对碧玉兰进行干旱胁迫和盐胁迫处理。结果表明,干旱胁迫和盐胁迫对碧玉兰体内过氧化物酶(POD)活性的影响存在差异。碧玉兰POD活性在干旱胁迫后35 d保持比较平稳的上升趋势,42 d时出现大幅度上升;盐胁迫后呈先上升后下降的趋势。干旱胁迫下,3/4树皮+1/4泥炭所栽培碧玉兰POD活性上升较为稳定;盐胁迫下,1/2树皮+1/4泥炭+1/4陶粒所栽培碧玉兰POD活性变化相对其他栽培基质更缓和。
The author selected four materials including bark, peat, sphagnum moss and porcelain granule, and made them purified. Then the author made Cymbidium lowianum on the drought stress and salt stress test by assigning these four materials to eight formu- lations. The results showed that there were differences in the influence on the peroxidase (POD) activity of C. knv/anum brought by these two stresses. On one hand, after taken the drought stress, this POD activity remained in relatively stable rise when in 35 days but rose greatly when in 42 days, while it firstly rose and then fell after taken the salt stress. On the other hand, under the drought stress, the POD activity of C. lowianum grown by three-quarter bark and one-quarter peat rose relatively stably, while under the salt stress the POD activity of C. lowianum grown by one half bark, one-quarter peat and one-quarter porcelain granule took milder change compared with other formulations.
出处
《亚热带农业研究》
2013年第4期235-238,共4页
Subtropical Agriculture Research
基金
云南省教育厅研究生项目(A3006785)
关键词
碧玉兰
基质
干旱胁迫
盐胁迫
过氧化物酶
Cymbidium lowianum
substrate
drought stress
salt stress
peroxidase