Infection of hybrid primula seeds by Botrytis cinerea and latent disease spread through the plants
Barnes, S.E. and Shaw, M.W. (2003) Infection of hybrid primula seeds by Botrytis cinerea and latent disease spread through the plants. Phytopathology, 93 (5). 573 - 578. ISSN 0031-949X
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To link to this article DOI: 10.1094/PHYTO.2003.93.5.573
Botrytis cinerea occurred commonly on cultivated Primula ×polyantha seed. The fungus was mostly on the outside of the seed but sometimes was present within the seed. The fungus frequently caused disease at maturity in plants grown from the seed, demonstrated by growing plants in a filtered airflow, isolated from other possible sources of infection. Young, commercially produced P. ×polyantha plants frequently had symptomless B. cinerea infections spread throughout the plants for up to 3 months, with symptoms appearing only at flowering. Single genetic individuals of B. cinerea, as determined by DNA fingerprinting, often were dispersed widely throughout an apparently healthy plant. Plants could, however, contain more than one isolate.
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