| Summary: | Six advanced Cameroonian peanut breeding lines (Arachis hypogaea L.), two introductions from Kano (Nigeria) and one traditionally cultivated variety (control) were grown at four locations during three seasons, giving a total of twelve locations x year combinations. The purpose was to evaluate yield stability and a number of yield components. Significant lines x environment interactions were detected for all traits. Results revealed that most Cameroonian breeding lines including 82Ds 479, 854, 1809 and 1632 had above-average results for pod and seed yields, good stability shown by their regression coefficients (b) close to unity and low non-significant deviations from regression. Lines 82D22P-466 and 82D14S- 1809, with mean yields and yield components higher than average and b values lower or close to unity are expected to perform well for these traits in less favourable environments. The introduced line K2044- 80 was stable for seed yield but had below average yields. Such a line can be utilized in a breeding programme for transferring stability characters into high yielding cultivars. Significant positive correlations between pod and seed yields vs. 100-seed weight for some lines contributed to their yield increase in poor environments.
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