干旱胁迫对不同引种区樟子松种子萌发与幼苗生长的影响
收稿日期: 2022-04-19
修回日期: 2022-05-31
网络出版日期: 2022-08-04
基金资助
辽宁省农业科学院基本科研业务费计划项目(2021HQ1913)
Effects of Drought Stress on Seed Germination and Seedling Growth of Pinus sylvestris var.mongolica from Different Introduction Regions
Received date: 2022-04-19
Revised date: 2022-05-31
Online published: 2022-08-04
为掌握樟子松(Pinus sylvestris var.mongolica)种苗阶段的抗旱性,采集三北地区彰武县、围场县、多伦县、右玉县、大同县5个不同引种区樟子松种子为试验材料,采用聚乙二醇(PEG-6000)溶液模拟不同干旱胁迫处理,研究了干旱胁迫对三北地区种子萌发与幼苗生长的影响。结果表明:干旱胁迫对不同引种区樟子松种子萌发和幼苗生长的影响存在差异,右玉县樟子松种子适应了在水势梯度-0.177Mpa干旱强度下萌发;彰武县、多伦县和围场县种子在水势梯度-0.735Mpa强干旱条件下可萌发。除大同县外,其他引种区种子随干旱胁迫增强而萌发减缓。围场县樟子松种子培育的幼苗在干旱胁迫下生长不良;除围场县外,其他引种区的幼苗胚根长在干旱胁迫条件下均较CK处理有所增加,幼苗胚轴直径随着干旱胁迫增加表现为低促高抑。樟子松种子萌发期抗旱性由强到弱依次为大同县>彰武县>多伦县>右玉县>围场县。在一定范围内,引种樟子松种子适应了当地环境条件,引种地区越干旱,樟子松种子的抗旱性越强。
张日升 , 王东丽 , 王翠萍 , 迟琳琳 . 干旱胁迫对不同引种区樟子松种子萌发与幼苗生长的影响[J]. 林草资源研究, 2022 , 0(3) : 60 -66 . DOI: 10.13466/j.cnki.lyzygl.2022.03.010
In order to understand the drought resistance of Pinus sylvestris var.mongolica seeds germination and seedling growth,the seeds of P.sylvestris from Zhangwu County,Weichang County,Duolun County,Youyu County,Datong County were collected as study materials,and polyethylene glycol (PEG6000) solution was used to simulate different drought stress treatments.The effects of drought stress on seed germination and seedling growth in these regions were studied and the results showed that the seed germination and seedling growth of P.sylvestris from different introduction regions responded differently to drought stress.The seeds of P.sylvestris from Youyu County adapted to germinate under drought level with a water potential gradient of -0.177 Mpa;seeds from Zhangwu County,Duolun County and Weichang County could germinate under drought level with a water potential gradient of -0.735 Mpa.Except the seeds of P.sylvestris from Datong County,the stronger the drought stress,the slower the germination in other introduction regions.Seedlings of P.sylvestris from Weichang County did not grow well under drought stress.Except Weichang County,the radicle length of seedlings in other introduction regions increased under drought stress compared with CK treatment,and the low drought stress could promote,but high drought stress could inhibit the diameter of seedling embryo axis with the increase of drought stress.According to the analysis,the drought resistance of P.sylvestris seeds in the germination stage from strong to weak was as follows: Datong County>Zhangwu County>Duolun County>Youyu County>Weichang County.Within a certain range,the seeds of P.sylvestris adapted to local environmental conditions,with the drought resistance of the seeds of P.Sylvestris becoming stronger as the region changing to dryer.
| [1] | 曾德慧, 尤文忠, 范志平, 等. 樟子松人工固沙林天然更新特征[J]. 应用生态学报, 2002, 13(1):1-5. |
| [2] | Zhu Jiaojun, Fan Zhiping, Zeng Dehui, et al. Comparison of stand structure and growth between artificial and natural forests of Pinus sylvestiris var.mongolica on sandy land[J]. Journal of Forestry Research, 2003, 14(2):103-111. |
| [3] | 王德权, 周宇飞, 陆璋镳, 等. 水分胁迫下持绿型高粱根系形态及其活力研究[J]. 干旱地区农业研究, 2012, 30 (2):73-76. |
| [4] | Miller T E. Effects of emergence time on survival and growth in an early old field plant community[J]. Oecologia, 1987, 72:272-278. |
| [5] | 曾德慧, 尤文忠, 范志平, 等. 樟子松人工固沙林天然更新障碍因子分析[J]. 应用生态学报, 2002, 13(3):257-261. |
| [6] | 韩广, 张桂芳, 杨文斌. 影响沙地樟子松天然更新的主要生态气候因子的定量分析[J]. 林业科学, 1999, 35(5):22-27. |
| [7] | 朱教君, 李智辉, 康宏樟, 等. 聚乙二醇模拟水分胁迫对沙地樟子松种子萌发影响研究[J]. 应用生态学报, 2005, 16(5):801-804. |
| [8] | 曾庆平, 郭勇. 植物的逆境应答与系统抗性诱导[J]. 生命的化学(中国生物化学会通讯), 1997, 17(3):31-33. |
| [9] | 郭米山, 王谦, 高广磊, 等. 沙埋和种子处理对樟子松贮藏种子萌发出苗的影响[J]. 中国水土保持科学, 2016, 14(6):86-93. |
| [10] | 姚泽, 王祺, 张元恺, 等. 干旱荒漠区樟子松种子繁育技术研究[J]. 农业与技术, 2013, 33(6):40-41. |
| [11] | 尤国春. 樟子松沙地育苗技术研究[J]. 防护林科技, 2005,(6):17-18. |
| [12] | 李银科, 刘世增, 康才周, 等. 温度对樟子松和沙地云杉种子萌发特征的影响[J]. 水土保持通报, 2011, 31(4):73-76,77. |
| [13] | 高春智, 何炎红, 田有亮, 等. 不同浓度赤霉素浸种对樟子松种子萌发的影响[J]. 内蒙古农业大学学报, 2012, 33(3):67-72. |
| [14] | 王东丽, 张日升, 方祥, 等. 固沙樟子松种子萌发与幼苗生长对干旱胁迫的响应及抗旱性评价[J]. 浙江农林大学学报, 2020, 37(1):60-68. |
| [15] | 国际种子检验协会. 1996国际种子检验规程[M]. 北京: 中国农业出版社, 1999. |
| [16] | 时秀梅. 围场县水资源现状分析与评价[J]. 水利科技与经济, 2013, 19(6):102-105. |
| [17] | 杨鹏晓. 右玉县农村饮水现状调查及分析[J]. 山西水利, 2015(1): 7,9. |
| [18] | 范树宏. 朔州市水面蒸发量特征分析[J]. 山西水利, 2013(7): 10,26. |
| [19] | 马有卿. 大同县水资源现状及可持续利用对策分析[J]. 科技情报开发与经济, 2007, 36(17):262-263. |
| [20] | 阿如旱, 车敏. 近60年多伦县气候特征变化分析[J]. 科技情报开发与经济, 2017, 46(3):426-430. |
| [21] | 武高林, 杜国祯. 植物种子大小与幼苗生长策略研究进展[J]. 应用生态学报, 2008, 19(1):191-197. |
| [22] | 潘昕, 李吉跃, 王军辉, 等. 干旱胁迫对青藏高原4种灌木生理指标的影响[J]. 林业科学研究, 2013, 26(3):352-358. |
/
| 〈 |
|
〉 |
