Greenhouse Screening of Cotton Varieties Against Fusarium Wilt Complex

IF 1.7 Q2 PLANT SCIENCES

Plant Health Progress Pub Date : 2024-06-07 DOI:10.1094/php-03-24-0020-rs

Jessica Dotray, Jennifer Chagoya, T. Wheeler, Cecilia Monclova-Santana

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Abstract

Fusarium oxysporum f. sp. vasinfectum race 1 and 2 (FOV) and Meloidogyne incognita (southern root-knot nematode, RKN) complex can cause severe losses in cotton and management recommendations include using varieties that are resistant to RKN. The objective of this project was to test the response of different varieties to the Fusarium wilt complex with and without RKN resistance. Four greenhouse trials were conducted, where cultivars infested with RKN and FOV were evaluated on 1) leaf wilt symptoms rated every 3-4 days to calculate area under disease progress curve and 2) visual ratings of root and stem necrosis at the end of each trial. RKN resistant cultivars ‘PHY 480 W3FE’ and ‘DP 1747NR B2XF’ statistically had similar AUDPC, root necrosis, and stem necrosis as RKN susceptible cultivars ‘DP 1522 B2XF’ and ‘DP 1646 B2XF’ in all trials. This demonstrated that RKN resistance does not correlate to FOV resistance and RKN resistance alone is not sufficient to manage Fusarium wilt. Cultivar ‘ST 4946GLB2’, which carries both RKN and FOV resistance, statistically had the lowest AUDPC, root necrosis, and stem necrosis in all greenhouse trials.

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温室筛选抗镰刀菌枯萎病的棉花品种

Fusarium oxysporum f. sp. vasinfectum race 1 and 2 (FOV) 和 Meloidogyne incognita（南方根结线虫，RKN）复合体会给棉花造成严重损失，管理建议包括使用抗 RKN 的品种。该项目的目标是测试不同品种对镰刀菌枯萎病复合体的反应，包括对 RKN 的抗性和不抗性。共进行了四次温室试验，对受到 RKN 和 FOV 侵染的栽培品种进行了以下评估：1）每 3-4 天评定一次叶片枯萎病症状，以计算病情发展曲线下的面积；2）每次试验结束时对根部和茎部坏死情况进行目测评定。据统计，在所有试验中，抗 RKN 栽培品种 "PHY 480 W3FE "和 "DP 1747NR B2XF "的 AUDPC、根部坏死和茎部坏死情况与抗 RKN 栽培品种 "DP 1522 B2XF "和 "DP 1646 B2XF "相似。这表明 RKN 抗性与 FOV 抗性并不相关，仅有 RKN 抗性不足以控制镰刀菌枯萎病。据统计，同时具有 RKN 和 FOV 抗性的栽培品种'ST 4946GLB2'在所有温室试验中的 AUDPC、根部坏死和茎部坏死率最低。

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

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.