ISSN:
1572-9788
Keywords:
cucumber mosaic virus
;
tomato
;
transgenic
;
virus resistance
;
field
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Abstract Since the summer of 1993, transgenic tomato plants expressing the coat protein (CP) genes of cucumber mosaic cucumovirus have been tested under field conditions to assess the level of resistance and agronomic performance. Trials were performed in different areas in Italy and the target virus in the majority of tests was spread naturally by the indigenous aphid populations. Twenty-three homozygous lines of variety UC82B, transformed to contain four different CP genes of CMV, were evaluated. The lines were preselected for CP expression, single gene copy, and virus resistance in growth chamber experiments. In general, CMV resistance was confirmed under field conditions though resistance in the field was less effective than what was observed in growth chamber experiments. The resistance observed in multi-year and multi-location experiments is of commercial value for several of the most resistant lines. Engineered resistance upon transfer to Italian varieties by breeding or direct transformation will be used in tomato production in Italy or elsewhere.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1009615807781
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