在干旱胁迫下，种子激发能促进山楂萌发和早苗形成

IF 1.7 4区农林科学 Q2 AGRONOMY

Seed Science and Technology Pub Date : 2023-01-01 DOI:10.15258/sst.2023.51.1.06

ZhengSheng Li, Y. Liu

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引用次数: 1

摘要

灌种可以缓解干旱胁迫带来的负面影响。本研究主要探讨了种子激发、干旱及其相互作用对合心石萌发特性的影响。通过比较不同的引种方式和干旱胁迫对多枣种子萌发和成苗的影响，试图规范多枣种子适宜的引种方法，为后续栽培生产提供理论依据和技术支持。结果表明:种子激发、干旱胁迫及其交互作用显著(P < 0.01)影响种子萌发参数和幼苗建立参数，干旱胁迫下种子萌发与幼苗早期建立极显著(P < 0.05)相关;在不同的激发剂中，水、0.5% KMnO4、0.3% H2O2和5% PEG-6000均显著(P < 0.05)促进了木参种子的萌发和成苗。其中，0.5% KMnO4对缓解干旱胁迫对种子萌发和早苗形成的影响最为有效。从形态上看，灌浆的有益作用可归因于种子萌发、伸长和幼苗生物量积累的增加。

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Seed priming stimulates germination and early seedling establishment of Corethrodendron multijugum under drought stress

Seed priming can alleviate the negative effects of drought stress. The present study focused on exploring the effects of seed priming, drought and their interaction on the germination characteristics of Corethrodendron multijugum. We attempted to standardise an appropriate priming method for C. multijugum seeds by comparing the effects of various priming methods and drought stress on seed germination and seedling establishment to provide theoretical basis and technical support for subsequent cultivation and production. The results indicated that seed priming, drought stress and their interaction significantly (P < 0.01) affected all seed germination parameters and seedling establishment parameters, and germination was significantly (P < 0.05) correlated with early seedling establishment under drought stress. Of the different priming agents used in this study, water, 0.5% KMnO4, 0.3% H2O2 and 5% PEG-6000 significantly (P < 0.05) promoted seed germination and seedling establishment in C. multijugum. Among them, 0.5% KMnO4 was the most effective in alleviating the effects of drought stress on germination and early seedling establishment. Morphologically, the beneficial effects of priming can be attributed to increased seed germination, elongation and biomass accumulation of seedlings.

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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.