[1]周源,王继飞. 模拟水分胁迫及复水对宁夏贺兰山油松种子萌芽的影响[J].西北林学院学报,2020,35(5):122-125.[doi:10.3969/j.issn.1001-7461.2020.05.19]
 ZHOU Yuan,WANG Ji-fei. Effects of Simulated Water Stress and Re-watering on the Germination of Pinus tabuliformis Seeds in Helan Mountains[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2020,35(5):122-125.[doi:10.3969/j.issn.1001-7461.2020.05.19]
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 模拟水分胁迫及复水对宁夏贺兰山油松种子萌芽的影响()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第35卷
期数:
2020年第5期
页码:
122-125
栏目:
出版日期:
2020-09-30

文章信息/Info

Title:
 Effects of Simulated Water Stress and Re-watering on the Germination of Pinus tabuliformis Seeds in Helan Mountains
文章编号:
1001-7461(2020)05-0122-04
作者:
 周源1王继飞2
 (1.宁夏农林科学院 荒漠化治理研究所,宁夏 银川 750002;2.宁夏贺兰山国家级自然保护区管理局,宁夏 银川 750021)
Author(s):
 ZHOU Yuan1WANG Ji-fei2
 (1.Institute of Desertification Control,Ningxia Academy of Agriculture and Forestry Science,Yinchuan 750002,Ningxia,China; 2.Administration of State Nature Reserve of Helan Mountain in Ningxia,Yinchuan 750021,Ningxia,China)
关键词:
 油松水分胁迫种子发芽贺兰山
Keywords:
Pinus tabuliformis water stress seed germination Helan mountains
分类号:
S791.254
DOI:
10.3969/j.issn.1001-7461.2020.05.19
文献标志码:
A
摘要:
 采用不同浓度PEG-6000模拟水分胁迫,系统研究了水分胁迫及复水对贺兰山油松种子萌发的影响,主要包括发芽率、发芽速度、发芽指数、活力指数、芽长。结果表明,随着PEG浓度上升到20%~30%,上述指标均受到强烈抑制。复水后,除了发芽速度,其他发芽指标都显著低于对照,不同水分胁迫复水处理之间发芽指标差异不显著。这些发现为更好地理解贺兰山油松自然更新经营管理提供了依据。
Abstract:
 Effects of water stress simulated by the different concentrations of polyethylene glycol (PEG)-6000 and re-watering on the germination of Pinus tabuliformis seeds in Helan mountains were studied systematically.Parameters included the germination percentage,germination speed,germination index,vitality index,and sprout length.The results showed that all the parameters mentioned above were restrained intensely when concentrations of PEG raised to 20%-30%.After re-watering,they all showed significantly lower values compared with the controls except for the parameter of germination speed.There was no significant difference in the parameters between rehydration treatments of different water stress.These findings will provide basis for better understanding of natural regeneration management of P.tabuliformis in Helan mountains.

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备注/Memo

备注/Memo:
 收稿日期:2019-08-08修回日期:2020-02-16
基金项目:宁夏贺兰山自然保护区管理局科研基金(2017-12)。
作者简介:周源,博士。研究方向:森林生态。E-mail:350917993@qq.com
更新日期/Last Update: