Symptom expression and seed transmission of alfalfa mosaic virus and potato yellowing virus (SB-22) inSolanum brevidens andS. etuberosum |
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| Authors: | J P T Valkonen E Pehu K Watanabe |
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| Institution: | (1) International Potato Center (CIP), Apartado 5969, Lima, Peru;(2) Present address: Department of Plant Production, University of Helsinki, Viikki, SF-00710 Helsinki, Finland |
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| Abstract: | Summary
Solanum brevidens showed calico mosaic symptoms in all the leaves, butS. etuberosum yellowing and yellow mosaic only in the top leaves, following graft-inoculation with alfalfa mosaic virus (AMV). The South
American potato virus SB-22 infected latentlyS. brevidens following graft-inoculation, whereasS. etuberosum was not infected. AMV was not transmitted to the ovules of AMV-infectedS. brevidens andS. etuberosum. However, AMV was transmitted to the seeds ofS. etuberosum through pollen, resulting in 0.9% infected seeds.S. brevidens infected by SB-22 produced up to 20.2% of virus-infected germinable seed, and in some of the seed lots of infectedS. brevidens the germination rate was as low as 1.0%. |
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| Keywords: | Etuberosa virus resistance NCM-ELISA |
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