评估马铃薯(Solanum tuberosum L.)栽培品种对根瘤线虫(Pratylenchus penetrans)的敏感性以及病害对植株生长和块茎重量的影响

IF 2.3 3区 农林科学 Q1 AGRONOMY
Nehan Ain, Ishrat Naz, Maria, Syed Sartaj Alam, Muhammad Haris
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引用次数: 0

摘要

根部病害线虫(RLN),即穿心莲线虫(Pratylenchus penetrans (Cobb) Filipjev 和 Schuurmans-Stekhoven),是一种迁徙性内生寄生虫,对包括巴基斯坦在内的世界各地的马铃薯产量和块茎质量都有影响。本研究旨在调查 16 个马铃薯栽培品种在筛选室和田间条件下对 P. penetrans 的易感性。评估了每个栽培品种的根部、土壤和块茎皮中穿心蝇的种群密度。结果显示,三个马铃薯栽培品种 Lal Moti、Rodeo 和 Raco 具有 "抗性",六个栽培品种 Semi、Pirol、Ronaldo、Abelia、5-Zena red 和 L-R 具有 "中等抗性",其余栽培品种具有 "中等易感性或易感性"。在栽培品种 Lal Moti 的根部(53.75)和 100 克块茎果皮(10.0)中观察到的线虫幼虫或成虫数量明显较少(P = 0.00)。在 Lal Moti 栽培品种中,每个根系(1.25 个)和 100 克块茎皮(3.0 个)上的坏死病斑数量明显减少,块茎(1.06 个)和根系(0.62 个)上的坏死病斑也明显缩小。与 Rodeo、Raco 和 L-R 栽培品种相比,它是唯一一个在田间条件下能承受高接种体压力的栽培品种,限制了 RLN 在根系中的繁殖系数(Rf = 0.02),块茎产量(每株 13.1 个)显著较高,最高产量(每三个随机块茎 35.5 克)为 35.5 克。在筛选室和田间条件下,马铃薯栽培品种从果皮或土壤中逃逸的线虫数量与重量之间明显呈强负相关,r = - 0.97 和 - 0.87。栽培品种抗性为马铃薯中的迁飞 RLN 提供了一个潜在的可持续解决方案,并可有效纳入线虫管理策略。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Assessment of Susceptibility of Potato (Solanum tuberosum L.) Cultivars to Root Lesion Nematode, Pratylenchus penetrans, and Disease Impact on Plant Growth and Tuber Weight

Assessment of Susceptibility of Potato (Solanum tuberosum L.) Cultivars to Root Lesion Nematode, Pratylenchus penetrans, and Disease Impact on Plant Growth and Tuber Weight

The root lesion nematode (RLN), Pratylenchus penetrans (Cobb) Filipjev and Schuurmans-Stekhoven, a migratory endo-parasite has impacted potato yield and tuber’s quality across the world including Pakistan. The present study was designed to investigate the susceptibility of 16 potato cultivars to P. penetrans under screen house and field conditions. Population densities of P. penetrans in roots, soils and tuber peels of each cultivar were assessed. Findings revealed that three potato cultivars Lal Moti, Rodeo, and Raco were found “Resistant”, six cultivars Semi, Pirol, Ronaldo, Abelia, 5-Zena red and L-R were found “Moderately Resistant” and remaining cultivars were found “Moderately Susceptible or Susceptible”. Significantly (P = 0.00) lower number of nematode larvae or adults was observed within roots (53.75) and 100 g tubers peel (10.0) of cultivar Lal Moti. A marked reduction in the number of necrotic lesions per root system (1.25), 100 g tuber peel (3.0) and minute size necrotic lesions on tubers (1.06) and root system (0.62) were evident in cultivar Lal Moti. It was the only cultivar that sustained high inoculum pressure under field conditions, restricted the reproduction factor (Rf = 0.02) of RLN in roots and yielded significantly higher number of tubers (13.1 per plant) with maximum yield (35.5 g per three random tubers) as compared to Rodeo, Raco and L-R cultivars. A strong negative correlation between the number of egressed nematodes from peels or soil and weights of potato cultivars was evident with r = − 0.97 and − 0.87 under screen house and field conditions, respectively. Cultivar resistance offers a potential sustainable solution for the migratory RLN in potatoes and could be effectively integrated into nematode management strategies.

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来源期刊
Potato Research
Potato Research AGRONOMY-
CiteScore
5.50
自引率
6.90%
发文量
66
审稿时长
>12 weeks
期刊介绍: Potato Research, the journal of the European Association for Potato Research (EAPR), promotes the exchange of information on all aspects of this fast-evolving global industry. It offers the latest developments in innovative research to scientists active in potato research. The journal includes authoritative coverage of new scientific developments, publishing original research and review papers on such topics as: Molecular sciences; Breeding; Physiology; Pathology; Nematology; Virology; Agronomy; Engineering and Utilization.
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