| 蝴蝶兰不同品种耐冷特性的研究 |
| |
| 引用本文： | 刘学庆,王秀峰,朴永吉.蝴蝶兰不同品种耐冷特性的研究[J].园艺学报,2007,34(2):425-430. |
| |
| 作者姓名： | 刘学庆 王秀峰 朴永吉 |
| |
| 作者单位： | (山东农业大学园艺科学与工程学院, 山东泰安271018; 山东烟台市农业科学研究院, 山东烟台265500) |
| |
| 基金项目： | 山东省农业良种产业化工程项目 |
| |
| 摘 要： | 以6个蝴蝶兰( Phalaenopsis spp. ) 品种为试材, 测定了不同低温、处理时间及温度回升过程中叶绿素含量、Fv/Fm、MDA含量及SOD活性等变化。结果表明: 在11℃/6℃条件下, NK1和GL14两个品种受冷害程度最轻, 温度回升10 d时两品种的叶绿素含量和Fv/Fm恢复为处理前的84.9%、43.3%和91.3%、24.8% , 恢复能力较强, 为耐冷品种; GL11和JT944受冷害严重, 温度回升10 d时, 上述指标分别为处理前的2.3%、6.3%和0、0, 难以恢复正常水平, 为不耐冷品种; 其余两个品种为中等耐冷品种。在14℃/9℃条件下, 只有GL11受到严重伤害, 表明大部分蝴蝶兰品种的耐受极限夜温为9℃以下。叶绿素含量、Fv/Fm及SOD活性对温度变化敏感, 能够及时反应出蝴蝶兰在低温胁迫下的变化状况, 可作为鉴定蝴蝶兰耐冷性强弱的指标。MDA含量变化较复杂, 规律性不强, 不宜作为蝴蝶兰耐冷性鉴定的指标。
|
| 关 键 词： | 蝴蝶兰 耐冷性 叶绿素含量 Fv/Fm MDA SOD |
| 文章编号： | 0513-353X（2007）02-0425-06 |
| 收稿时间： | 2006-09-21 |
| 修稿时间： | 2006-09-212007-01-15 |
A Study on Cold Tolerance of Different Phalaenopsis Cultivars |
| |
| LIU Xue-qing,WANG Xiu-feng,PIAO Yong-ji.A Study on Cold Tolerance of Different Phalaenopsis Cultivars[J].Acta Horticulturae Sinica,2007,34(2):425-430. |
| |
| Authors: | LIU Xue-qing WANG Xiu-feng PIAO Yong-ji |
| |
| Institution: | (College of Horticulture Science and Engineering, Shandong Agricultural University, Taipan, Shandong 271018, China;Yantai Academy of Agricultural Science, Yantai, Shandong 265500, China) |
| |
| Abstract: | Changes in chlorophyll content, chlorophyll fluorescence parameter (Fv/Fm) , MDA content and SOD activity in the leaves of six Phalaenopsis cultivarswere studied during different low temperature treatments, and during recovery. The results showed that the cold damage on leaves at 11℃/6℃ was different among cultivars. The damage on leaves of GL11 and JT944 wasmore serious than NK1 and GL14. After 10 d of recovery, chlorophyll content and Fv/Fm in NK1 and GL14 were 84.9% , 43.3% , 91.3% and 24.8% of those before cold treatment, respectively. In contrast, chlorophyll content and Fv/Fm in GL11 and JT944 at 10 d of recovery were only 2.3% , 6.3%, 0 and 0, respectively. NK1 and GL14 had a higher recovery capacity. So it is concluded that NK1 and GL14 were cold2tolerant and GL11 and JT944 were cold-sensitive.The rests were intermediate in cold tolerance, GL11 was the only cultivar that was severely injured under 14℃/9℃, which indicated that the threshold low temperature at night endurable bymost of Phalaenopsis cultivars was below 9℃. The changes in chlorophyll content, Fv/Fm and SOD activity under different cold temperatureswere significant and could be used to indicate the cold tolerance of Phalaenopsis. MDA content did not show consistent changes under cold temperatures. |
| |
| Keywords: | Fv/Fm MDA SOD |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《园艺学报》浏览原始摘要信息 |
| 点击此处可从《园艺学报》下载免费的PDF全文 |
|
