巴西原生种子萌发增强:凤梨科Dyckia sp.中游离赤霉素酸与纳米包封赤霉素酸的比较分析

IF 2.2 4区 农林科学 Q2 HORTICULTURE Folia Horticulturae Pub Date : 2023-11-25 DOI:10.2478/fhort-2023-0029
Jean Carlo Baudraz de Paula, Hugo Roldi Guariz, Kauê Alexandre Monteiro de Moraes, Gabriel Danilo Shimizu, Ricardo Tadeu de Faria, Halley Caixeta de Oliveira, Leonardo Fernandes Fraceto, Anderson Espirito Santo Pereira
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引用次数: 0

摘要

巴西是各种各样的戴基亚属植物的家园。然而,由于栖息地的破坏和掠夺性开发,许多这些物种受到威胁。保护这些植物的另一种选择是利用植物调节剂来刺激发芽的有性繁殖。赤霉素酸(GA3)在这一过程中是一种有效的调节剂,但其不稳定性和易降解性带来了挑战。因此,GA3的纳米包封可以起到保护分子和控制释放的作用。本研究研究了不同剂量GA3对四种植物(D. cabrerae、D. dusenii、D. pottiorum和D. walteriana)萌发的影响。在不同浓度的GA3浸泡阶段,杜氏杜氏和华氏杜氏对GA3的反应显著,发芽率从35%提高到60%以上。而cabrerae和potiorum仅在营养生长参数上对GA3有响应。在第二阶段,将海藻酸盐/壳聚糖纳米颗粒(NP ALG/CS)和壳聚糖/三聚磷酸盐纳米颗粒(NP CS/TPP)与游离GA3和不含GA3的NPs进行比较。结果表明,纳米囊化GA3在使用较小剂量(0.75 mg·L−1 ~ 1.0 mg·L−1)的情况下,主要以ALG/ CS NPs为主,可以提高白莲属植物种子的萌发效率。因此,使用赤霉素建议d . dusenii和d . walteriana,对于后者,纳米颗粒含ALG / CS-GA3允许减少所需的剂量。
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Enhanced germination of seeds native to Brazil: A comparative analysis between free and nanoencapsulated gibberellic acid in Dyckia sp. (Bromeliaceae)
Brazil is home to a great diversity of species of the genus Dyckia. However, many of these species are threatened due to habitat destruction and predatory exploitation. An alternative to conserving these plants is sexual propagation using plant regulators to stimulate germination. Gibberellic acid (GA3) is an effective regulator in this process, but its instability and ease of degradation pose challenges. Therefore, nanoencapsulation of GA3 could be used to protect the molecule and allow controlled release. In this study, the effects of different doses of GA3 were evaluated on the germination of four species: D. cabrerae, D. dusenii, D. pottiorum and D. walteriana. The first stage consisted of soaking the seeds in different concentrations of GA3, in which the species D. dusenii and D. walteriana showed significant responses to GA3, with an increase from 35% to more than 60% germination. However, the species D. cabrerae and D. pottiorum responded positively to GA3 only in vegetative growth parameters. In the second stage, the use of nanoparticles of alginate/chitosan (NP ALG/CS) and chitosan/tripolyphosphate (NP CS/TPP) containing GA3 was compared with free GA3 and with NPs without GA3. It was verified that the use of nanoencapsulated GA3 resulted in a more efficient germination response in D. walteriana seeds, using smaller doses of the regulator (between 0.75 mg · L−1 and 1.0 mg · L−1), mainly with the ALG/ CS NPs. Therefore, the use of GA3 is recommended for D. dusenii and D. walteriana, and for the latter, nanoparticles containing ALG/CS-GA3 allow a reduction in the required dose.
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来源期刊
Folia Horticulturae
Folia Horticulturae Agricultural and Biological Sciences-Horticulture
CiteScore
3.40
自引率
0.00%
发文量
13
审稿时长
16 weeks
期刊介绍: Folia Horticulturae is an international, scientific journal published in English. It covers a broad research spectrum of aspects related to horticultural science that are of interest to a wide scientific community and have an impact on progress in both basic and applied research carried out with the use of horticultural crops and their products. The journal’s aim is to disseminate recent findings and serve as a forum for presenting views as well as for discussing important problems and prospects of modern horticulture, particularly in relation to sustainable production of high yield and quality of horticultural products, including their impact on human health.
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