适定性参数评价甘薯新品种丰产性、稳定性和适应性

采用适定性参数法对1998－1999年度北方甘薯区域试验产量结构进行丰产性、稳定性和适应性分析。结果表明，鲜薯产量：宁R97－5、徐54－1丰产性、稳定性较好，适应性广；烟93－251虽然产量高，但稳定性差，对环境反应敏感；其余品种丰产性较差，薯干产量：宁R97－5、徐54－1丰产性、稳定性好，适应性广；济89121、豫薯12号虽然产量高，但稳定性差；其余品种丰产性较差。

The Appraisal of High yield, Stability and Adaptability of New Sweetpotato Varieties with the Method of Adaptable and Stable Parameter

The method of adaptable and stable parameter was used to analyze high yield, stability and adaptability of new sweetpotato varieties from the regional trial in the North during 1998-1999. The result indicated that the fresh root yield of Ning R97 5 and Xu 54 1 are higher,and more stable, they have wide adaptability. Although Yan 93 251 has higher yield, its stability is poor and its yield is effected by circumstances easily. The other varieties have lower yield. On the other hand, the dry root yield of Ning R97 5 and Xu 54 1 are higher andmore stable, too. They can adapt widly. Ji 89121 and Yushu 12 have higher yield, but poor stability. The rest varieties have lower yield.