Comparison of responses of bean, pea and rape plants to UV-B radiation in darkness and in light

被引：0
作者：
Elżbieta Skórska
机构：
[1] Agricultural University of Szczecin,Department of Physics
来源：
Acta Physiologiae Plantarum | 2000年 / 22卷
关键词：
chlorophyll fluorescence; photosynthesis; UV-B;
D O I：
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摘要：
Effect of UV-B radiation on leaves of bean, pea and rape plants was studied. UV-B radiation (11.2 kJ·m−2) induced more distinct reduction of the primary photosynthesis activity when applied in darkness than the same UV-B dose, extended in time, and applied with photosynthetic active radiation (PAR). The pea plants were more susceptible to UV-B in darkness, but in the presence of PAR their tolerance was higher. The CO2 fixation in the bean and rape plants, exposed to UV-B was decreased, but for the pea plants it remained unchanged. The UV-B irradiation caused an increase in the content of ultraviolet-absorbing pigments. Additionally, the bean plants grown at UV-B increased the thickness of leaves, described as SLW.
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