Effect of maize stripe and maize chlorotic stripe viruses on growth and yield in hybrid ZS 5206 inoculated at four stages
| MSI99P0099 | |
| Roca de Doyle, M. M. Autrey, L. J. C. | |
| Effect of maize stripe and maize chlorotic stripe viruses on growth and yield in hybrid ZS 5206 inoculated at four stages | |
| Gevers, H. O. (ed.), Proceedings of the Ninth South African Maize Breeding Symposium, held at Cedara College, Summer Grain Sub-Centre, March 20-22, 1990 | |
| Book chapter | |
| 1992 | |
| Department of Agricultural Development, Technical Communication, 232 | |
| p. 129-135 | |
| 0-621-14226-3 | |
| Pretoria, Department of Agricultural Development | |
| En | |
| En | |
| Plants of the susceptible maize hybrid ZS 5206 (also known as RS 5206) growing in non-limiting conditions in the glasshouse, were inoculated at coleoptile stage and at 15, 30, and 45 days after emergence with maize stripe (MStV) and maize chlorotic stripe (MCStV) viruses by viruliferous colonies of the planthopper Peregrinus maidis Ashmead. Growth and yield were adversely affected by two viruses at four inoculation stages. The difference in growth with the uninoculated control was significant at coleoptile and at 15 and 30 days but not at 45 days. Yield was drastically reduced by both MCStV and MStV by inoculation at coleoptile and 15 days but with no differential effect between the two viruses. However, in plants inoculated at 30 and 45 days, reductions in dry mass of seed by MCStV were 90,1 and 37,8 per cent, respectively, compared to 56,5 and 18,4 per cent by MStV. It is concluded that both MStV and MCStV will induce losses in susceptible hybrids when inoculated up to 45 days after emergence, but that the effects will be more pronounced at earlier stages of growth. The higher depressing effects of MCStV provide evidence that it is more destructive than MStV, as found in field observations. Glasshouse conditions were however justified owing to the interference with maize streak and other viruses in yield loss assessment trials in the field. | |
| MAIZE PLANT VIRUSES GROWTH YIELDS DISEASES MAIZE STRIPE VIRUS MAIZE CHLOROTIC STRIPE VIRUS | |
| MAURITIUS | |
| Maize: Diseases | |
| Viruses: Maize stripe Viruses: Maize chlorotic stripe | |
| 1992-01-21 | |
| En | |
| Mauritius Sugar Industry Research Institute | |
| FC | |
| CAT | |
| PATH |