Effect of plant density on stem and flower quality of single-stem ornamental sunflower genotypes

IF 1 Q3 HORTICULTURE

Horticultural Science Pub Date : 2020-03-31 DOI:10.17221/10/2019-hortsci

E. Mladenović, S. Cvejić, S. Jocić, Nemanja Ćuk, J. Čukanović, M. Jocković, Ana Marjanović Jeromela

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引用次数: 1

Abstract

The aim of this research was to determine the optimum planting density for the production of high-quality cut flowers with desirable characteristics. 25 single-stem ornamental sunflower genotypes were planted at different densities and evaluated for flowering time, flower diameter, and stem circumference and length over a two-year production cycle. Three spacing patterns were used: 25 × 25 cm, 30 × 30 cm, and 70 × 30 cm, which led to the planting densities of 160 000, 90 000, and 60 000 plants/ha, respectively. The plant density had the most important effect on the stem circumference, flower diameter, and stem length (total variation 52, 60, and 58%, AMMI analysis) and a small effect on the flowering time (total variation 1%, AMMI analysis). Based on environment-focused scaling, all high-density environments could be suitable for the production of single-stem sunflower genotypes. The results demonstrated the adaptation of several sunflower genotypes G9, G11, G12, G21, and G22 as the most suitable based on the optimum flower diameter, stem circumference, and stem length. These results may lead to progress in growing ornamental sunflowers as a cut flower.

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植株密度对单茎观赏向日葵基因型茎和花品质的影响

本研究的目的是确定生产具有理想特性的高质量切花的最佳种植密度。25种单茎观赏向日葵基因型以不同密度种植，并在两年的生产周期内评估开花时间、花径、茎周长和长度。采用三种间距模式：25×25 cm、30×30 cm和70×30 cm，种植密度分别为16万株、9万株和6万株/公顷。植物密度对茎围、花径和茎长的影响最为重要（总变异量52%、60%和58%，AMMI分析），对开花时间的影响较小（总变异率1%，AMMI研究）。基于以环境为重点的规模化，所有高密度环境都适合生产单茎向日葵基因型。结果表明，根据最佳花径、茎围和茎长，几种向日葵基因型G9、G11、G12、G21和G22的适应性是最合适的。这些结果可能有助于将观赏向日葵作为切花进行种植。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Horticultural Science Horticulture-园艺

CiteScore

2.20

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： The journal publishes results of basic and applied research from all areas of horticulture, fruit-growing, vegetable-growing, wine-making and viticulture, floriculture, ornamental gardening, garden and landscape architecture, concerning plants that are grown under the conditions of European temperate zone, or field plants that are considered as horticultural cultures. Original scientific papers, short communications and review articles are published in the journal. Papers are published in English (British spelling).