本研究以落花生新品系十種,加上臺農4號及臺南選9號爲對照,自民國73年春作至74年秋作二年間,春作在九個地區,秋作在四個地區進行區域試驗。資料經以十種穩定性介量分析,探討莢果及籽粒產量之穩定性及尋求適當的穩定性分析方法。結果摘要如下: 1.根據變方分析結果,春作與秋作之莢果產量及籽粒產量二性狀,在品種、環境及品種X環境之交感效應均極顯著。 2.莢果及籽粒產量穩定性均高的品系,在春作計有南改系133及134號;秋作僅有南改系133號,唯其產量在平均左右,利用價值不高。南改系132號產量高,但秋作甚不穩定。 3.不同穩定性介量反應不同功能之穩定性,結果頗難一致。 4.本研究結果建議:區域試驗資料之統計分析,同時採用(平均值)x、cv、b及δ^2等四個介量,可兼顧品種之產量及穩定性,而達到計算簡單又評估準確的效果。
Ten newly developed peanut lines and two check varieties were grown in replicated regional yield trials at nine locations in spring crop and four locations in fall crop for a period of two years (1984-1985). Yield stability by ten stability parameters were investigated. (1) The combined analysis of variance for pod and kernel yield indicated that the mean squares for entry, environment, and entry x environment interactions were all highly significant. (2) Nan-kai-si 133 and 134 had the best pod and kernel yield stability over all environments in spring crop, while Nan-kai-si 133 also had the best pod and kernel yield stability over all environments in fall crop. However, their yields were not acceptable. Nan-kai-si 132 had high yield but was lower in stability in fall crop. (3) Different aspects of stability do not always provide a complete picture of the responses. (4) This research indicates that coefficient of variation (cv), regression coefficient (b), deviation from regression (δ^2) and mean yield ((average)X) are useful parameters in the selection of stable high-yielding varieties in peanut regional trials if simplicity of calculation and precision of evaluation are concerned.