| 镧浸种对水稻种子萌发及幼苗生长的影响 |
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| 引用本文： | 张杰,刘登义,黄永杰,刘雪云.镧浸种对水稻种子萌发及幼苗生长的影响[J].生态学杂志,2005,24(8):893-896. |
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| 作者姓名： | 张杰 刘登义 黄永杰 刘雪云 |
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| 作者单位： | 安徽师范大学生物多样性研究中心,重要生物资源保护与利用研究安徽省重点实验室,芜湖,241000 |
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| 基金项目： | 安徽省自然科学基金项目(03043501)，重要生物资源保护与利用研究安徽省重点实验室专项基金资助项目。 |
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| 摘 要： | 以水稻种子为材料,研究了稀土元素镧对水稻种子活力和幼苗生长的影响。结果表明,1~20mg.L-1La3+处理能提高水稻种子的活力,提高蛋白酶、淀粉酶和脂肪酶的活性,并能促进水稻茎、叶和根系的生长,其中10mg.L-1La3+处理效果最佳。当浓度超过30mg.L-1时,水稻种子萌发和幼苗生长受到抑制。此外,镧对水稻植株地下部分(根系)生长的影响比地上部分(茎叶)生长的影响要明显。镧对水稻种子萌发期间3种酶活性的影响程度表现为蛋白酶>脂肪酶>淀粉酶。
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| 关 键 词： | 水稻 硝酸镧 种子萌发 幼苗生长 |
| 文章编号： | 1000-4890（2005）08-0893-04 |
| 收稿时间： | 2004-10-24 |
| 修稿时间： | 2004年10月24 |
Effects of seed soaking with La3 + on seed germination and seedling growth of rice |
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| ZHANG Jie,LIU Dengyi,HUANG Yongjie,LIU Xueyun.Effects of seed soaking with La3 + on seed germination and seedling growth of rice[J].Chinese Journal of Ecology,2005,24(8):893-896. |
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| Authors: | ZHANG Jie LIU Dengyi HUANG Yongjie LIU Xueyun |
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| Abstract: | An experiment with JinYou No.63 rice seeds was installed to study the effects of La~(3+) soaking on the seed germination and seedling growth of the rice.The results showed that within the range of 120 mgL~(-1),La~(3+) increased the vigor of seed and its proteinase,amylase and lipase activities,and promoted the growth of plant shoot and root.The optimal concentration of La~(3+) was 10 mgL~(-1).When the La~(3+) concentration was higher than 30 mgL~(-1),seed germination and seedling growth were depressed.The effect of lanthanum on root was much more apparent than on shoot,and the sensitivity of enzymes to La~(3+) was in the order of proteinase>lipase>amylase. |
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| Keywords: | rice La(NO_3)_3 germination seedling growth |
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