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EFFECT OF UV-B RADIATION ON PHYSIOLOGICAL PROPERTIES IN SOYBEAN AND CUCUMBER SEEDLINGS
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- Author:
- No author available
- Journal Title:
- CHINESE JOURNAL OF APPLIED & ENVIRONMENTAL BIOLOGY
- Issue:
- 5
- DOI:
- 10.3321/j.issn:1006-687X.1999.05.004
- Key Word:
- UV-B辐射;根系活力;SOD活性;NR活性;大豆;黄瓜
Abstract： 在植物生长室中,UV-B辐射明显降低黄瓜幼苗的根系活力,抑制程度随辐射时间的延长而增强.黄瓜和大豆幼苗的叶绿素和可溶性蛋白含量减少与UV-B辐射时间长短呈正相关,但是类胡萝卜素减少幅度不大.UV-B对Chl b的破坏较Chl a严重,导致Chl a/b比值增大.UV-B虽增加大豆幼苗的SOD活性,但降低大豆幼苗的NR活性及其对温度变化的敏感性.分析认为,Chl a/b比值和SOD活性升高,有助于植物对UV-B的适应.
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