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Screening of seedlings of wildSolanum species for resistance to bacterial stem rot caused by soft rot Erwinias

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Abstract

A standard effective screening procedure for evaluating resistance of young seedlings ofSolanum species to bacterial stem rot caused byErwinia species was developed. Susceptibility to stem rot caused byErwinia carotovora subsp.carotovora varied greatly among 500 differentSolanum accessions; generally accessions resistant toE. carotovora subsp.carotovora were also resistant toE. carotovora subsp.atroseptica andE. chrysanthemi. Most of the lines ofSolarium berthaultii, S. bulbocastanum, S. chacoense, S. stoloniferum, S. tarijense, andS. tuberosum subsp.andigenum were very resistant to stem rot.

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This research was supported by a specific cooperative agreement from the U.S. Department of Agriculture, Agricultural Research Service, and a subcontract from a special grant from the USDA, Cooperative States Research Service, awarded to the Inter-Regional Potato Introduction Project (IR-1).

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Lojkowska, E., Kelman, A. Screening of seedlings of wildSolanum species for resistance to bacterial stem rot caused by soft rot Erwinias. American Potato Journal 66, 379–390 (1989). https://doi.org/10.1007/BF02853434

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