评估智利本地马铃薯(Solanum tuberosum Chilotanum 组)对晚疫病(Phytophthora infestans (Mont.) de Bary)的抗性

IF 2.3 3区 农林科学 Q1 AGRONOMY
Franco Figueroa-Grenett, Erika X. Briceño, Iván Maureira-Butler, Anita Behn
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引用次数: 0

摘要

Phytophthora infestans (Mont.) de Bary 是一种对马铃薯作物具有高度破坏性的卵菌,控制其影响至关重要。寄主植物的抗性在病害管理中起着至关重要的作用。本研究旨在通过田间和实验室实验,评估九种预选的智利本地马铃薯基因型对晚疫病的抗性,并将它们与中度易感的对照栽培品种 Désirée 进行比较。田间试验跨越智利南部同一地点的两个季节(2017/2018 和 2018/2019)。测量了自然感染造成的叶面损伤百分比,并计算了病害进展曲线下的相对面积(rAUDPC)。实验室实验包括 2019 年的脱落小叶检测和块茎检测。结果表明,Azul (0.10)、SN-1 (0.10)、Chilca-1 (0.11)、Azul Casposa (0.07)、Corahila Reina (0.16)、Piku (0.17) 和 Murta (0.24) 这七个基因型表现出部分抗性,其 rAUDPC 值在两个季节均显著低于对照栽培品种。此外,在 2019 年的小叶脱落测定中,有四个基因型的受害率大大降低:Azul Casposa(0.11%)、Chilca-1(0.64%)、Piku(1.11%)和 SN-1(3.16%)。2019 年进行的块茎测定显示,5 个叶面抗性基因型 Azul(43.98%)、SN-1(38.06%)、Chilca-1(41.54%)、Corahila Reina(45.5%)和 Murta(39.11%)在块茎中也表现出低至中等抗性。这项研究成功鉴定了抗Phytophthora infestans的有利变异,表明智利本地马铃薯种质可能适合作为马铃薯育种计划的供体。
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 Resistance to Late Blight (Phytophthora infestans (Mont.) de Bary) in Chilean Native Potatoes (Solanum tuberosum Chilotanum group)

Assessment of Resistance to Late Blight (Phytophthora infestans (Mont.) de Bary) in Chilean Native Potatoes (Solanum tuberosum Chilotanum group)

Phytophthora infestans (Mont.) de Bary is a highly destructive oomycete in potato crops, and managing its impact is crucial. Host plant resistance plays a pivotal role in disease management. This study aimed to evaluate the resistance to late blight in nine preselected Chilean native potato genotypes through field and laboratory experiments, comparing them with the moderately susceptible control cultivar Désirée. The field trial spanned two seasons (2017/2018 and 2018/2019) at the same location in Southern Chile. Foliar damage percentage caused by natural infection was measured, and the relative area under the disease progress curve (rAUDPC) was calculated. The laboratory experiments included a detached leaflet assay and a tuber assay in 2019. The results indicated that seven genotypes, Azul (0.10), SN-1 (0.10), Chilca-1 (0.11), Azul Casposa (0.07), Corahila Reina (0.16), Piku (0.17) and Murta (0.24), exhibited partial resistance with significantly lower rAUDPC values than the control cultivar across both seasons. Moreover, the detached leaflets assay in 2019 highlighted four genotypes with substantially lower damage percentages: Azul Casposa (0.11%), Chilca-1 (0.64%), Piku (1.11%) and SN-1 (3.16%). The tuber assay conducted in 2019 revealed that five of the foliar-resistant genotypes, Azul (43.98%), SN-1 (38.06%), Chilca-1 (41.54%), Corahila Reina (45.5%) and Murta (39.11%), exhibited low to medium resistance also in tubers. This study successfully identified favourable variation for Phytophthora infestans resistance, indicating the potential suitability of given Chilean native potato germplasm as donors in potato breeding programs.

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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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