氮沉降对寒漠短命植物种子萌发的影响

IF 1.7 4区农林科学 Q2 AGRONOMY

Seed Science and Technology Pub Date : 2022-01-01 DOI:10.15258/sst.2022.50.3.02

Huiliang Liu, Lingwei Zhang, Bo Liu

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引用次数: 0

摘要

种子萌发是植物生命周期的关键初始阶段，受外界环境的强烈调控。氮沉降是增加和影响许多生态系统结构和功能的重要环境变化因子。研究了氮沉降对9种短命植物种子萌发的影响，包括4种氮沉降水平下种子发芽率、萌发指数和种子活力。施氮量对不同发芽率的影响差异显著，而施氮量对发芽率指数的影响不显著。该研究可为未来短期植物对氮沉降的响应提供萌发策略信息，并对干旱区生态保护具有指导意义。

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Effect of nitrogen deposition on seed germination of ephemeral species in the cold desert

Seed germination is the key initial stage in the plant life cycle and strongly regulated by the external environment. Nitrogen deposition is an important environmental change factor that is increasing and affecting the structure and function of many ecosystems. This research aimed to investigate the effect of nitrogen deposition on the seed germination of nine ephemeral plants, including seed germination percentage, germination index and seed viability under four levels of nitrogen deposition. The germination percentage of the studied species differed significantly in response to nitrogen deposition, but nitrogen deposition has almost no significant effect on germination index. This study can provide information on the germination strategy of ephemeral plants in response to increasing nitrogen deposition in future, and the results can guide ecological conservation in arid areas.

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来源期刊

Seed Science and Technology 农林科学-农艺学

CiteScore

3.00

自引率

28.60%

发文量

审稿时长

>36 weeks

期刊介绍： Seed Science and Technology (SST) is an international journal featuring original papers and articles on seed quality and physiology related to seed production, harvest, processing, sampling, storage, genetic conservation, habitat regeneration, distribution and testing. A journal that meets the needs of researchers, advisers and all those involved in the improvement and technical control of seed quality. Published every April, August and December.