Seed thermo-priming accelerates the growth of Ceiba glaziovii (Kutze) K.Schum. seedlings

IF 17.7 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2024-03-05 DOI:10.33494/nzjfs542024x264x

José Laurindo dos Santos Júnior, Elizamar Ciríaco da Silva

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Abstract

Background: Global climate changes have caused temperature increases that can harm plant development, especially the initial growth and establishment of seedlings for the recovery of degraded areas. However, there are species in which these losses are attenuated when the seeds are thermo-primed to sublethal temperatures. Therefore, the objective of the present study was to evaluate the influence of seed heat conditioning on germination and initial growth of Ceiba glaziovii (Kuntze) K. Schum seedlings, an endemic species occurring in seasonally tropical dry forest in Brazil. Methods: Seeds of C. glaziovii were exposed to 70 oC for 15, 30, 45, 60 and 90 minutes as pre-germination treatments. The control did not undergo heat treatment. Germination variables, vegetative growth, survival rate and normal leaves were evaluated. Results: Thermo-priming negatively affected the germination proportion of C. glaziovii seeds with increasing exposure time. However, it significantly enhanced vegetative growth and seedling survival rate of this species after transplanting, without impairing the formation of normal leaves. Conclusions: Thermo-priming of seeds was found to produce more vigorous seedlings of Ceiba glaziovii.

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种子热预热可加速Ceiba glaziovii (Kutze) K.Schum.幼苗的生长

背景：全球气候变化导致气温升高，会损害植物的生长发育，尤其是用于退化地区恢复的幼苗的初期生长和成活。然而，有些物种的种子在亚致死温度下进行热预处理后，这些损失会减小。因此，本研究的目的是评估种子热调节对巴西季节性热带干旱森林特有物种 Ceiba glaziovii (Kuntze) K. Schum幼苗萌发和初期生长的影响：方法：将 C. glaziovii 种子置于 70 oC 温度下 15、30、45、60 和 90 分钟，作为发芽前处理。对照组未进行热处理。对发芽变量、无性生长、存活率和正常叶片进行了评估：结果：随着暴露时间的增加，热催芽对 C. glaziovii 种子的发芽率有负面影响。结果：随着暴露时间的增加，热催芽对 C glaziovii 种子的发芽率有负面影响，但却能明显提高该物种移植后的无性生长和幼苗成活率，且不影响正常叶片的形成：结论：对种子进行热催芽可培育出生命力更强的 Ceiba glaziovii 幼苗。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.