| 钙对紫外辐射B胁迫下小麦幼苗若干生物学特性的影响 |
| 摘要点击 2598 全文点击 2069 投稿时间：2000-12-22 |
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| 中文关键词 钙 UVB胁迫 小麦幼苗 生物学特性 |
| 英文关键词 calcium ultraviolet-B radiation stress wheat seedlings biological characteristics |
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| 中文摘要 |
| 采用模拟紫外辐射(UV-B,280～320nm)的盆栽实验法,研究钙离子对紫外B辐射胁迫下小麦幼苗若干生物学特性的影响.结果显示,在紫外辐射胁迫下(0.35W/m2,每日照射6h,连续照射7d),2mmol/L钙离子处理的小麦,地下与地上部生长指标均明显低于对照植株(降幅为8.1%～36.1%).而6mmol/L钙离子处理的小麦幼苗,各种生长指标的降幅(3.2%～28.6%)低于2mmol/L钙离子处理的小麦幼苗.表明钙离子具有缓解紫外辐射伤害小麦幼苗的效应,这同钙离子对小麦幼苗部分生理生化指标的影响有关.
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| 英文摘要 |
| Under simulated ultraviolet-B radiation (UV-B,280～320nm), effect of calcium on biological characteristics of wheat seedlings was studied with pot culture experiment. The results showed that the growth indexes of wheat seedlings on ground and underground in calcium concentration 2mmol/L treated group were obviously reduced than that of wheat seedlings in control treated group (the descending range of 8 1%～36.1%) under UV-B stress (0.35W/m2, 6h per day, for 7 day). And the decreasing degree of growth indexes (3.2%～28.6%) for wheat seedlings in calcium concentration 6mmol/L treated group were lower than in calcium concentration 2mmol/L treated group. The experiment proved that calcium can mitigate the damage of ultraviolet-B radiation on wheat seedlings, and this effect was related to that calcium affected physiological and biochemical characteristics of wheat seedlings. |
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