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[1]黄少白,戴秋杰,刘晓忠,等.紫外光B辐射对水稻生长和生长素水平影响的初步研究[J].应用与环境生物学报,1997,3(03):213-217.
 Huang Shaobai,Dai Qiujie,Liu Xiaozhong,et al.EFFECTS OF ULTRAVIOLET-B RADIATION ON GROWTH AND IAA LEVEL OF RICE (ORYZA SATIVA L.)[J].Chinese Journal of Applied & Environmental Biology,1997,3(03):213-217.
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紫外光B辐射对水稻生长和生长素水平影响的初步研究()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
3卷
期数:
1997年03期
页码:
213-217
栏目:
论文
出版日期:
1997-08-25

文章信息/Info

Title:
EFFECTS OF ULTRAVIOLET-B RADIATION ON GROWTH AND IAA LEVEL OF RICE (ORYZA SATIVA L.)
作者:
黄少白1 戴秋杰1 刘晓忠1 彭少兵2 B. S. Vergara2
1. 江苏省农业科学院农业生物遗传生理研究所 南京 210014;
2. International Rica Research Institute P. O. Box 933, Manila 1099. Philippines
Author(s):
Huang Shaobai Dai Qiujie Liu Xiaozhong Peng Shaobing B. S. Vergara
1. Inst Agrobiol Genet Physiol, Jiangsu Acad Agricu Sci, Nanjing 210014;
2. Intern Rice Res Inst, P. O. Box 933, Manila 1099, Philippines
关键词:
紫外光B水稻生长IAAIAA氧化酶
Keywords:
ultraviolet-Brice growthIAAIAA oxidase
摘要:
2个水稻品种IR68和Dular生长在室外条件下,在以自然条件、13.0和19.1kJ·m-2·d-1(分别模拟臭氧浓度下降20%和40%时的UV-B强度)的紫外光B(UV-B280~320um)进行2和4wk的照射处理,以研究UV-B对水稻生长的影响.结果表明:UV-B强度增加能使2个水稻品种的株高、叶面积和叶m(DW)下降,而对分蘖数没有影响;随着UV-B处理强度的增加,IR68和Dular叶片IAA含量显著下降.在4wk处理的条件下19.1kJ·m-2·d-1的UV-B使IR68和Dular叶片的IAA含量分别下降了48.7%和46.2%.值得注意的是.UV-B处理提高了2个水稻品种叶片内的IAA氧化酶的活性.初步推测UV-B使水稻叶片IAA氧化酶活性提高导致IAA含量的下降.从而抑制了水稻的生长.
Abstract:
Two rice cultivars IR68 and Dular were grown under outdoor conditions and treated by 13.0 and 19.1kJ·m-2·d-1 (stimulating 20% and 40% ozone depletion) of biologically effective ultraviolet -B (UV-B) for two and four weeks to study the effect of supplemental UV-B radiation on the growth of rice. The results showed that plant height, leaf area, leaf dry weight except tiller number of both cultivars were reduced by enhanced UV-B radiation. IAA contents in the leaves of IR68 and Dular were decreased dramatically with the increase of UV-B treatment dose. After four weeks treatment, the reduction rate of IAA content in the leaves of IR68 and Dular subjected to 19.1kJ·m-2·d-1 UV-B radiation reached 48.7% and 46.2%,respectively. It was necessary to point out that IAA oxidase activities in both cultivars were promoted by UV-B treatment. It was discussed that the promotion of IAA oxidase activity in ice leaf induced by UV-B radiation resulted in the destroy of IAA and in turn to cause the inhibition the growth of rice.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:1996-5-21;接受日期:1996-11-15。
基金项目:江苏省自然科学基金,江苏省农科院与国际水稻研究所资助。
更新日期/Last Update: 1900-01-01