Description:
Tested as ACS-C1. Un-official pedigree (not published) by Dr. Kevin Falk: The parental population, 89-411, was derived from a population closely related to Tobin. This population was developed by Dr. D.S. Hutcheson at Agriculture and Agri-Food Canada, Saskatoon. Following four cycles of recurrent selection for superior agronomic performance (vigour, uniformity and straw strength), high seed oil, yellow seed coat colour and low glucosinolate content, the population was analyzed using the half-seed technique two times in the greenhouse to isolate zero erucic acid plants. Populations sizes and years were as follows: 755 in 1983, 240 in 1984, 752, in 1985 and 870 in 1987. Two cycles of recurrent selection for improved resistance to white rust race 7a was also carried out in the greenhouse (1983, 1988). A minimum of 1000 plants were screened in each cycle. Breeder seed of 89-411 was produced by bulking seed of 680 zero erucic acid plants. Experiment results: Performance and Adaptation - ACS-C1 has demonstrated higher yield and oil content than cv. Tobin in Co-op trials conducted in Western Canada. Its meal protein content is similar to that of cv. Tobin while glucosinolate content is lower. ACS-C1 has shown slightly better resistance to lodging than cv. Tobin, but requires 1 to 3 more days to mature. Its disease reaction is similar to cv. Tobin, with a slight deficiency in reseseatnce to white rust (Albugo candida). ACS-C1 appears to be well adapted to all areas of Western Canada.