| 西藏柏木抗旱生理研究 |
| |
| 引用本文： | 黄颜梅,张健.西藏柏木抗旱生理研究[J].四川林业科技,1998,19(4):31-36. |
| |
| 作者姓名： | 黄颜梅 张健 |
| |
| 作者单位： | 四川省林业科技推广总站(黄颜梅)，四川农业大学林学园艺学院(张健)，四川农业大学(罗承德) |
| |
| 摘 要： | 本研究采用人工干旱对比盆栽试验方法，探讨在水分胁迫下，西藏柏木生理生化指标变化规律及其抗旱机制。研究结果表明：在干旱条件下，叶水势降低，水分饱和亏缺增加，失水速率减小；电解质渗透率略有降低，脯氨酸累积增加，叶绿素ａ／ｂ值变大；生长阻滞含水量是田间持水量的５７％。综合分析表明，西藏柏木属于抗旱植物，抗旱机制是低水势忍耐脱水。
|
| 关 键 词： | 藏柏 水分胁迫 抗旱性 机制 |
Physiological Study on the Drought Resistance of Cupressus torulosa D.Don |
| |
| Huang,Yanmei.Physiological Study on the Drought Resistance of Cupressus torulosa D.Don[J].Journal of Sichuan Forestry Science and Technology,1998,19(4):31-36. |
| |
| Authors: | Huang Yanmei |
| |
| Institution: | Huang Yanmei (Sichuan Forest Science and Technology Popularizing Station) Zhang Jian Luo Chengde (Sichuan Agricultural University) |
| |
| Abstract: | Through a series of conditioned comparison,this study focused on physiology of drought resistance of C.Torulosa D.Don,nowdays a widely developed edemic tree species for subtropic areas.The results are accordingly summerized as follows: (1)A constant water loss of soil can significantly cause a decrease in leaf water potential and the loss velocity of leaf water,while the saturation and deficit of water chlorophyll a/b and protine accumulation will increase. (2)57 percent of field capacity can prohibit its growth. (3) C.Torulosa D.Don,which presents a somewhat strong drought resistance,should be formulated as a pattern of enduring dehydration with low water potential. |
| |
| Keywords: | Cupressus Torulosa D Don Water resistance Drought resistance Mechanism |
| 本文献已被 CNKI 维普 等数据库收录！ |
