| 水分胁迫下核桃叶片生理生化特性 |
| |
| 引用本文： | 蒲光兰,肖千文. 水分胁迫下核桃叶片生理生化特性[J]. 安徽农业科学, 2009, 37(5): 1909-1911 |
| |
| 作者姓名： | 蒲光兰 肖千文 |
| |
| 作者单位： | 四川农业大学林学园艺学院,四川雅安,625014;四川农业大学林学园艺学院,四川雅安,625014 |
| |
| 基金项目： | 国家863项目(2002AA2Z4261); 四川省林业科技先导计划 |
| |
| 摘 要： | [目的]探讨水分胁迫下核桃离体叶片的生理生化特性。[方法]以2年生核桃树离体叶片为试材，采用室内PEG溶液模拟干旱处理，设置3种PEG6000浓度（质量比分别为3％、9％和15％），以蒸馏水为对照，分别于胁迫6、12、30h时进行取材，并进行生理生化指标测定。[结果]水分胁迫下，核桃叶水势急剧下降，且PEG浓度在9％条件下下降最明显；叶片相对电导率上升，但各处理差异不明显；叶片SPAD值和Fv/Fm值下降，胁迫至30h时，其值降至最低；渗透调节物质脯氨酸和可溶性糖上升，其中，脯氨酸含量大量增加；超氧化物歧化酶（SOD）含量先上升后急剧下降。[结论]胁迫条件下，核桃离体叶片的叶水势、SPAD值和Fv/Fm值下降；叶片相对电导率、渗透调节物质脯氨酸和可溶性糖含量及SOD酶活性降低。
|
| 关 键 词： | 核桃 水分胁迫 生理生化特性 |
Physiological and Biochemical Characteristics in Juglans regia L. Leaves under Water Stress |
| |
| PU Guang-lan et al. Physiological and Biochemical Characteristics in Juglans regia L. Leaves under Water Stress[J]. Journal of Anhui Agricultural Sciences, 2009, 37(5): 1909-1911 |
| |
| Authors: | PU Guang-lan et al |
| |
| Affiliation: | PU Guang-lan et al (College of Forestry , Horticulture,Sichuan Agricultural University,Yaan,Sichuan 625014) |
| |
| Abstract: | [Objective] The study aimed to explore the physiological and biochemical characteristics in Juglans regia L.leaves under water stress.[Method] In the PEG solution-simulated drought treatment in lab,with the vitro leaves of 2-year-old J.regia as tested material and the distilled water as CK,PEG6 000 with 3 concn.(mass ratio of 3%,9% and 15%)were set up,and the leaves were selected resp.when they were stressed at 6,12,30 h and then their physiological and biochemical indexes in stressed laves were determined.... |
| |
| Keywords: | Juglans regia L. Water stress Physiological and biochemical characteristics |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
