Growth and Flowering of Greenhouse-grown Tomato Transplants in Response to Uniconazole

IF 1 4区农林科学 Q3 HORTICULTURE

Horttechnology Pub Date : 2022-12-01 DOI:10.21273/horttech05071-22

B. Dunn, C. Goad, L. Brandenberger

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引用次数: 0

Abstract

Uniconazole is approved for use as a chemical option on tomato (Solanum lycopersicum) for height control, but research is limited. In this study, 12 tomato cultivars were chosen with three cultivars each of indeterminate, determinate, heirloom, and container types. Plants were sprayed with a one-time application of 0, 2.5, 5, 7.5, or 10 mg⋅L–1 of uniconazole during the two- to four-leaf stage to evaluate height control. Results indicated no significant difference between concentrations for plant height, stem caliper, and plant dry weight. The greatest soil plant analysis development (SPAD) values were observed with the 10-mg⋅L–1 treatment. Flower response in ‘Brandywine’ to a single application of 0, 2.5, or 5 mg⋅L–1 of uniconazole demonstrated a greater number of flowers per plant at 5 mg⋅L–1, whereas no significant difference was shown for the number of flower clusters or the number of flowers per cluster at other treatment levels. Using 2.5 mg⋅L–1 uniconazole was effective for reducing plant height across all cultivars of greenhouse-grown tomato seedlings compared with the control, whereas addition of 5 mg⋅L–1 was shown to increase the number of flowers in the heirloom cultivar Brandywine.

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单唑唑对温室栽培番茄移栽生长和开花的影响

烯效唑已被批准用作番茄（Solanum lycopersicum）的一种化学选择，用于控制身高，但研究有限。在本研究中，从不确定型、确定型、传家宝型和容器型三个品种中选择了12个番茄品种。在二至四叶期，向植物一次性施用0、2.5、5、7.5或10 mg·L-1的烯效唑，以评估高度控制。结果表明，植物高度、茎径和植物干重的浓度之间没有显著差异。10 mg·L–1处理的土壤-植物分析发展（SPAD）值最大。“Brandywine”对单次施用0、2.5或5 mg·L-1的烯效唑的花朵反应表明，在5 mg·L-1时，每株植物的花朵数量更多，而在其他处理水平下，花簇数量或每簇花朵数量没有显著差异。与对照相比，使用2.5 mg·L–1烯效唑可有效降低所有温室番茄幼苗品种的株高，而添加5 mg·L-1可增加传家宝品种Brandywine的花朵数量。

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来源期刊

Horttechnology 农林科学-园艺

CiteScore

2.30

自引率

10.00%

发文量

审稿时长

3 months

期刊介绍： HortTechnology serves as the primary outreach publication of the American Society for Horticultural Science. Its mission is to provide science-based information to professional horticulturists, practitioners, and educators; promote and encourage an interchange of ideas among scientists, educators, and professionals working in horticulture; and provide an opportunity for peer review of practical horticultural information.