多效唑浸种对黑麦草耐热性的影响

园艺学报 ›› 2005, Vol. 32 ›› Issue (6): 1118-1120.

多效唑浸种对黑麦草耐热性的影响

马博英;徐礼根;金松恒;李雪芹;郭栋明

(¹浙江教育学院生物系, 杭州310012; ² 浙江大学生命科学学院, 杭州310029)

收稿日期:2004-12-01 修回日期:2005-01-11 出版日期:2005-12-25 发布日期:2005-12-25

Effects of Paclobutrazol on Thermotolerance of Perennial Ryegrass

Ma Boying;Xu Ligen;Jin Songheng;Li Xueqin;Guo Dongming

(¹Department of Biology, Zhejiang Education College, Hangzhou 310012,China; ²College of Life Sciences, Zhejiang University, Hangzhou 310029, China)

Received:2004-12-01 Revised:2005-01-11 Online:2005-12-25 Published:2005-12-25

摘要/Abstract

摘要： 研究了多效唑( PP₃₃₃ ) 浸种对黑麦草耐热性的影响。结果表明: PP₃₃₃浸种使黑麦草植株矮
小; 在高温胁迫下, PP₃₃₃减缓了黑麦草体内可溶性蛋白质含量的下降, 提高了超氧化物歧化酶( SOD) 活性和脯氨酸含量, 同时减缓了叶片膜透性的增加。这表明随着温度的升高, PP₃₃₃浸种的黑麦草体内SOD等抗氧化酶能有效地清除活性氧自由基, 维持质膜的稳定性, 减轻高温对黑麦草的伤害。

关键词: 黑麦草, 多效唑, 耐热性, 超氧化物歧化酶, 脯氨酸

Abstract: The influence of paclobutrazol (PP₃₃₃ ) on perennial ryegrass (Lolium perenne L. ) under heat stress was examined. The results showed that the plant height were significantly decreased after the seeds were treated with PP₃₃₃. The decline of soluble protein content in perennial ryegrass leaves treated with PP₃₃₃ was delayed in relation with the reduction of cellmembrane permeability, while the activity of SOD and the proline accumulation were increased, which indicated that the active oxygen species have been scavenged efficiently.
These results suggested that the damage of high temperature on perennial ryegrass could be alleviated by PP₃₃₃.

Key words: Lolium perenne L., Paclobutrazol, Thermotolerance, Superoxide dismutase, Proline

中图分类号:

S 68

马博英;徐礼根;金松恒;李雪芹;郭栋明. 多效唑浸种对黑麦草耐热性的影响[J]. 园艺学报, 2005, 32(6): 1118-1120.

Ma Boying;Xu Ligen;Jin Songheng;Li Xueqin;Guo Dongming. Effects of Paclobutrazol on Thermotolerance of Perennial Ryegrass[J]. ACTA HORTICULTURAE SINICA, 2005, 32(6): 1118-1120.

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