Cucurbit Genetics Cooperative Report 10:24 (article 15) 1987
Y.J. Wang1 and R. W. Robinson
Horticultural Sciences Department, New York State Agricultural Experiment Station, Geneva, NY 14456
R. Provvidenti
Plant Pathology Department, New York State Agricultural Experiment Station, Geneva, NY 14456
‘Wisconsin 2757’ is a valuable source of multiple disease resistance for cucumber (1). It is resistant to nine diseases, but is susceptible to watermelon mosaic virus-1 (WMV-1). A source of resistance to WMV-1, due to a single recessive gene, is ‘Surinam’ (2). ‘WI 27571’, ‘Surinam’, and the F2 of this cross were tested for WMV-1 resistance (Wmv-1-1), scab resistance (Ccu), powdery mildew resistance, spine color (B), gynoecious sex expression (F), and bitterness (bi).
There was no significant association of wmv-1-1 with Ccu, B, F, or powdery mildew resistance in the F2. Close linkage was observed, however, between wmv- 1-1 and bi. There were 86 susceptible, bitter F2 plants: 40 susceptible, nonbitter: 43 resistant, bitter: 1 resistant, nonbitter.
Classification for the nonbitter gene can be easily accomplished in the seedling stage. Thus, bi may be a useful seedling marker for resistance to watermelon mosaic virus-1.
Literature Cited
- Peterson, C. E., P. H. Williams, M. Palmer, and P. Louward. 1982. Wisconsin 2757 cucumber. HortScience 17:268.
- Wang, Y.-J., R. Provvidenti, and R. W. Robinson. Inheritance of resistance to watermelon mosaic virus 1 in cucumber. HortScience 19:582-588.
1 Present address: Beijing Vegetable Research Center, Beijing, China.