钙源对矮牵牛花灰霉病防治的评价

IF 1 4区 农林科学 Q3 HORTICULTURE
Katherine Bennett, G. Schnabel, J. Faust
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引用次数: 0

摘要

先前的研究已经证明了从氯化钙中提取的钙(Ca)喷雾应用对降低矮牵牛(petunia ×hybrida)花上的葡萄球菌(botrytis cinerea)感染的严重程度的有效性。本研究考察了6种钙源在减少矮牵牛花灰霉病中的作用,以及它们可能引起的喷雾损害或植物毒性。在第一个实验中,评估的六种钙来源是实验室级和商业级氯化钙、硝酸钙、乙二胺四乙酸螯合钙、氨基酸螯合钙和硅酸钙。在第二个试验中,对Ca喷施时间为0、1、3、5、7天的矮牵牛花进行了喷害程度评价。两个试验均对开花植物进行处理。在Ca喷施后24 h,取花接种孢灰菌孢子,每12 h接种一次,连续接种72 h,评价灰霉病防治效果。1250 mg·L-1 Ca浓度的实验室级和商业级氯化钙是降低葡萄孢枯萎病严重程度的最有效Ca源,且在任何花龄均不会造成喷雾伤害。当Ca浓度增加到2000 mg⋅L-1时,施用氯化钙对花的伤害增加,但与施用1250 mg⋅L-1 Ca相比,在降低葡萄枯萎病严重程度方面没有额外的效果。结果表明,几种Ca源均能显著降低葡萄枯萎病的严重程度;然而,钙源的选择对于最小化喷雾损伤的风险是很重要的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Evaluation of Calcium Sources for the Management of Botrytis Blight on Petunia Flowers
Previous studies have demonstrated the efficacy of calcium (Ca) spray applications derived from Ca chloride for reducing botrytis (Botrytis cinerea) infection severity on petunia (Petunia ×hybrida) flowers. This study examines the effects of six Ca sources for their efficacy in reducing Botrytis blight on petunia flowers and their potential to cause spray damage or phytotoxicity. In the first experiment, the six Ca sources evaluated were laboratory-grade and commercial-grade Ca chloride, Ca nitrate, Ca ethylenediaminetetraacetic acid chelate, Ca amino acid chelate, and Ca silicate. In the second experiment, petunia flowers that were 0, 1, 3, 5, or 7 days old at the time of the Ca spray applications were evaluated for spray damage severity. For both experiments, treatments were applied to flowering plants. For the evaluation of Botrytis blight efficacy, flowers were excised and inoculated with botrytis spores 24 hours after the Ca spray application, and were evaluated every 12 hours for 72 hours. Laboratory-grade and commercial-grade Ca chloride at 1250 mg⋅L–1 Ca were the most effective Ca sources evaluated for decreasing Botrytis blight severity while not causing spray damage at any flower age. Spray damage to the flowers from the Ca chloride application increased when Ca concentrations increased to 2000 mg⋅L–1, but no additional benefit was observed for reducing Botrytis blight severity compared with the 1250-mg⋅L–1 Ca application. The results demonstrate that several Ca sources reduce Botrytis blight severity significantly; however, selection of the Ca source is important for minimizing the risk of spray damage.
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来源期刊
Horttechnology
Horttechnology 农林科学-园艺
CiteScore
2.30
自引率
10.00%
发文量
67
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.
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