CHARACTERIZATION OF POTATO GERMPLASM FOR RESISTANCE TO GLOBODERA PALLIDA AND GLOBODERA ROSTOCHIENSIS: A STRATEGIC APPROACH TO SUSTAINABLE POTATO PRODUCTION
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Authors
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Vikas Mangal
ICAR-CPRI, Shimla
https://orcid.org/0000-0001-9418-2340
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Salej Sood
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Vinay Bhardwaj
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Aarti Bairwa
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Dalamu
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Ashwani Kumar Sharma
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Sanjeev Sharma
-
Ajay Kumar Thakur
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Vinod Kumar
-
Brajesh Singh
Keywords:
Potato cyst nematodes, Globodera pallida, Globodera rostochiensis, resistance, germplasm, susceptibilityAbstract
This study evaluates the resistance of 406 potato accessions across different years
to potato cyst nematodes (PCNs), Globodera pallida and G. rostochiensis, a major pest that
significantly reduce potato yields. The screening was conducted using a root ball technique in
controlled glasshouse conditions over four years (2020-2024) at the ICAR-Central Potato Research
Institute (ICAR-CPRI) in Kufri, India. The results revealed a wide range of resistance among the
accessions. Notably, accessions such as CP2418, CP1736, CP3641, and JEX/A-15 exhibited high levels
of resistance to both PCN species, which showed either immunity or minimal cyst formation.
Additionally, accessions such as CP1687 and CP3222 demonstrated moderate resistance. All these
highly resistant accessions are potential candidates in breeding for resistance to potato cyst
nematode in India. Since major Indian potato varieties used in the current study are susceptible
to one or the other species of PCN, the study highlights the importance of continuous screening
and the strategic use of resistant germplasm to develop new potato varieties with broad-spectrum
resistance, which is crucial for sustainable potato production.
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