2019-2021年特拉华州和马里兰州大豆植物寄生线虫调查

IF 1.7 Q2 PLANT SCIENCES

Plant Health Progress Pub Date : 2022-10-09 DOI:10.1094/php-07-22-0064-s

Alexandra C. Kessler, A. Koehler

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引用次数: 1

摘要

大豆囊线虫是美国特拉华州(DE)和马里兰州东海岸(MD)大豆产量最大的病原菌。为了更新线虫分布和种群数据，2019年至2021年进行了为期三年的土壤调查。从8月到10月，对特拉华州和马里兰州9个县的大豆田进行了采样。共采集土壤样本311份，其中预测样本222份，诊断样本89份。在所有样本中，鉴定出9个线虫分类群。大豆包囊线虫(Heterodera glycines，占53.38%)、根结线虫(Meloidogyne incognita，占18.33%)、损伤线虫(Pratylenchus spp，占57.23%)和螺旋线虫(Helicotylenchus spp，占54.34%)在该地区分布最多。在这些分类群中，66%的SCN样本种群高于经济阈值;39%的RKN;病变的14%。该调查结果强调了该地区SCN的持续挑战，并指出应监测RKN和病变等其他线虫类群。许多领域存在多种线虫属，并且相互作用知之甚少。

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A survey of plant parasitic nematodes of soybeans in Delaware and Maryland 2019-2021

Soybean cyst nematode is the most yield-limiting pathogen of soybean across Delaware (DE) and eastern shore Maryland (MD). To update nematode distribution and population data, a three-year soil survey was conducted from 2019 to 2021. Soybean fields across DE and nine MD counties were sampled from August through October. Three hundred and eleven soil samples were collected, including two hundred and 22 predictive samples and 89 diagnostic samples. Across all samples, nine nematode taxa were identified. Soybean cyst nematode (Heterodera glycines, 53.38%), root-knot nematode (Meloidogyne incognita, 18.33%), lesion nematode (Pratylenchus spp., 57.23%), and spiral nematode (Helicotylenchus spp., 54.34%) were most abundant in the region. Among these taxa, 66% of SCN samples had populations above the economic threshold; 39% of RKN; and 14% of lesion. Results from this survey highlight the continued challenge of SCN in the region and that other nematode taxa like RKN and lesion should be monitored. Many fields have multiple nematode genera present, and interactions are poorly understood.

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来源期刊

Plant Health Progress Agricultural and Biological Sciences-Horticulture

CiteScore

3.00

自引率

13.00%

发文量

期刊介绍： Plant Health Progress, a member journal of the Plant Management Network, is a multidisciplinary science-based journal covering all aspects of applied plant health management in agriculture and horticulture. Both peer-reviewed and fully citable, the journal is a credible online-only publication. Plant Health Progress is a not-for-profit collaborative endeavor of the plant health community at large, serving practitioners worldwide. Its primary goal is to provide a comprehensive one-stop Internet resource for plant health information.