生长素在不同插盘系统中生长的凤仙花苗圃中的作用

IF 1.1 Q3 HORTICULTURE Ornamental Horticulture Pub Date : 2022-09-01 DOI:10.1590/2447-536x.v28i3.2511
Máximo Salinas, Guido Hakim, Esteban Gandolfo, J. Lojo, E. Giardina, A. Benedetto
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引用次数: 0

摘要

近年来,生长素作为环境信号整合者的关键作用已为人们所熟知,并且越来越多的证据表明,生长素的生物合成是植物耐胁迫的整体机制的重要组成部分。然而,尽管生长素参与了与根的产生和生物量积累相关的响应,但对观赏植物在塞细胞盘上的商业繁殖的研究却很少。因此,本研究的目的是评估在不同细胞大小的两种繁殖体系(无土培养基塞细胞托盘和漂浮体系)中生长的凤仙花移植前生物量的积累,这些体系分别喷洒单一剂量的生长素吲哚乙酸(IAA)或两种内源生长素抑制剂n -1-萘酞酸(NPA)和2,3,5-三碘苯甲酸(TIBA)。结果表明,在试验结束时,施用IAA和施用漂浮体系的植株叶面积、鲜重和干重均最高。相反,作为阴性对照,使用NPA和TIBA作为生长素合成和转运的拮抗剂,在这些变量中产生的效果与对照植物相反。然而,在提出商业建议之前,有必要评估这些处理对华氏水藻产量产生的潜在移栽后影响。
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Involvement of auxins in Impatiens walleriana plants grown in different plug tray systems during nursery
Abstract The key role of auxins as integrators of environmental signals has become well-known in recent years, and emerging evidence indicates that auxin biosynthesis is an essential component of the overall mechanisms of plant tolerance to stress. However, although the knowledge of the involvement auxins in the responses related to the generation of roots and accumulation of biomass, studies in ornamental species concerning the commercial propagation in plug cell trays are scarce. Thus, the aim of this work was to evaluate the accumulation of pre-transplant biomass in Impatiens walleriana plants growing in two propagation systems (soilless medium-based plug cell trays and a floating system) with trays of different cell sizes and sprayed either with a single dose of the auxin indole acetic acid (IAA) or with two inhibitors of endogenous auxins, N-1-naphthylphthalamic acid (NPA) and 2,3,5-triiodobenzoic acid (TIBA). Our results demonstrate that plants from both floating system and those sprayed with IAA present both the highest leaf area and fresh and dry weight at the end of the experiment. Conversely, as a negative control, the use of NPA and TIBA as antagonists of the synthesis and translocation of auxins caused an opposite effect in such variables as compared to control plants. However, before making commercial recommendations, it would be necessary to evaluate the potential post-transplant effects of these treatments on the generation of I. walleriana yield.
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来源期刊
Ornamental Horticulture
Ornamental Horticulture Agricultural and Biological Sciences-Horticulture
CiteScore
2.20
自引率
14.30%
发文量
30
审稿时长
50 weeks
期刊介绍: The Journal ORNAMENTAL HORTICULTURE - OH (Revista Brasileira de Horticultura Ornamental) is an official publication of the Brazilian Society for Floriculture and Ornamental Plants (Sociedade Brasileira de Floricultura e Plantas Ornamentais) - SBFPO Short title of the journal: ORNAM. HORTIC. This Journal aim to publish technical and scientific researches in floriculture, ornamental plants, landscaping and landscapes from members of this Society and others. The manuscripts can be submitted in portuguese, but publication must be in English language (U.S.). All the manuscripts submitted to Ornamental Horticulture (Revista Brasileira de Horticultura Ornamental) - OH must not have been submitted or published at the same time, partial or totally, to other journal. It is allowed to read, download, copy, distribute, print, search, or link to parts or the full texts to use them for any other lawful purpose. The reproduction of articles published in this journal is authorized, under the condition that the source is acknowledged.
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