Estimating the agronomic impact of white clover mosaic virus on white clover performance in the North Island of New Zealand
| Autor: | Brigitta Dudas, Derek W. R. White, G. R. Cousins, D. L. Beck, M. F. Nicholls, P. M. Tong, T. J. Lough, Richard L. S. Forster, R. Burgess, D. R. Woodfield |
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| Rok vydání: | 1998 |
| Předmět: | |
| Zdroj: | New Zealand Journal of Agricultural Research. 41:171-178 |
| ISSN: | 1175-8775 0028-8233 |
| DOI: | 10.1080/00288233.1998.9513300 |
| Popis: | The agronomic impact of white clover mosaic potexvirus (WC1MV) was determined using yield trials and a survey of virus incidence. The virus was shown to occur at high levels in white clover plants in pastures throughcut the North Island. The virus was detected in 69% of white clover plants from 42 mature pastures examined (>4 years old) and in 52% of white clover plants examined on roadsides. The virus was also detected in 15 pastures less than 4 years old, but at a lower level (18% infection). The effect of WC1MV on plant growth was determined using clonal and non‐clonal lines of the modern white clover cv. Grasslands Tahora in a replicated spaced plant field trial. Uninoculated plants were shown to out‐produce inoculated plants at each of three harvest dates over one year. Infected plants produced, in total, 36.5% less dry matter than uninoculated plants. The major effect of WC1MV infection was on stolon elongation, with lesser effects on leaf length and petiole height. These results indicate t... |
| Databáze: | OpenAIRE |
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