Production and quality of zinnia under different growing seasons and irrigation levels

IF 1.2 4区 农林科学 Q2 AGRICULTURE, MULTIDISCIPLINARY
R. Martins, R. Pêgo, E. S. D. Cruz, J. Abreu, D. F. Carvalho
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引用次数: 3

Abstract

ABSTRACT Zinnia (Zinnia elegans Jacq.) is a fast-growing and easy to cultivate plant that has flowers of different colors. This species has become an option to be introduced commercially in many countries as cut flower and its floral quality is influenced by different cultivation techniques. We evaluated the production and the quality of floral stems of zinnia (cv. Red California Giant) in response to growing seasons and irrigation levels. In a greenhouse located in Rio de Janeiro (Brazil), zinnia plants were grown in two cycles (autumn-winter and winter-spring) in pots with water replacement corresponding to 46, 64, 75 and 100% of their water requirement. Based on the stem length and diameter and on the flower diameter, there was variation in the quality of the stems produced in the growing seasons evaluated. All stems from the autumn-winter cycle were classified as A1 (high quality), while almost 9% of the stems from the winter-spring cycle were classified as A2 (medium quality). There was a linear growth trend in the production and quality of zinnia stems with the increase of the irrigation level in most cases, as well as significant effect of the growing seasons, with the best results of number of stems, fresh weight, length and diameter of the stem and flower diameter found in the autumn-winter cycle. The weather conditions of this cycle favor the production and quality of zinnia floral stems, and the replacement of 100% of the specie’s water requirement is recommended in both cultivation cycles.
不同生长季节和灌溉水平下百日草的产量和品质
摘要百日菊(Zinnia elegans Jacq.)是一种生长迅速、易于栽培的植物,具有不同颜色的花朵。该物种已成为许多国家商业引进的一种选择,作为切花,其花朵质量受到不同栽培技术的影响。我们根据生长季节和灌溉水平评估了百日草(红加利福尼亚巨人)花茎的产量和质量。在里约热内卢(巴西)的一个温室中,百日草植物分两个周期(秋冬和冬春)在花盆中生长,换水量分别为其所需水量的46%、64%、75%和100%。根据茎的长度和直径以及花的直径,在评估的生长季节产生的茎的质量存在差异。秋冬周期的所有茎都被归类为A1(优质),而冬春周期的茎几乎有9%被归类为A2(中等质量)。大多数情况下,随着灌溉水平的提高,百日草茎的产量和质量呈线性增长趋势,生长季节的影响也很显著,其中茎数、鲜重、茎长径和花径在秋冬周期表现最好。该周期的天气条件有利于百日草花茎的生产和质量,建议在两个栽培周期中更换100%的植物需水量。
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来源期刊
Ciencia E Agrotecnologia
Ciencia E Agrotecnologia 农林科学-农业综合
CiteScore
2.30
自引率
9.10%
发文量
19
审稿时长
6-12 weeks
期刊介绍: A Ciência e Agrotecnologia, editada a cada 2 meses pela Editora da Universidade Federal de Lavras (UFLA), publica artigos científicos de interesse agropecuário elaborados por membros da comunidade científica nacional e internacional. A revista é distribuída em âmbito nacional e internacional para bibliotecas de Faculdades, Universidades e Instituições de Pesquisa.
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