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Allelic Diversity Changes in 96 Canadian Oat Cultivars Released from 1886 to 2001

^a Plant Gene Resources of Canada, Saskatoon Research Centre, Agriculture and Agri-Food Canada, 107 Science Place, Saskatoon, SK, Canada S7N 0X2
^b Dep. of Plant Sciences, Univ. of Saskatchewan, 51 Campus Dr., Saskatoon, SK, Canada S7N 5A8
^c Dep. of Biology, McGill Univ., Montreal, QC, Canada H3A 1B1

View larger version (32K): [in a new window]   Fig. 1. The distributions of 62 SSR alleles (A) and 18 alleles undetected in the oat cultivars released since 1990 (B) with respect to their occurrence frequencies in all 96 oat cultivars. Fig. 1A also separately illustrates four and 16 SSR alleles of occurrence frequency less than or equal to 0.02 and 0.05, respectively. Note that different scales are presented in the axes of Fig. 1A-B.

View larger version (93K): [in a new window]   Fig. 2. Four silver staining gels that illustrate the four allelic change patterns over the 115 years of Canadian oat breading. A, Random (from AM3); B, Shifting (from AM42); C, Increasing (from AM102); and D, Decreasing (from AM31). In each gel, samples from 96 Canadian oat cultivars are arrayed from left to right in a chronological order, from 1886 to 2001. The order parallels that in Table 1. Only the last two digits of the release year are given for each cultivar. M is the DNA ladder.