AMMI Model Analysis of Yield Data of Xinjiang Sweet Potato Region Test

【Objective】 To evaluate the ecological adaptability of different sweet potato varieties, verify the discrimination of various experimental areas in Xinjiang, and screen out new sweet potato varieties suitable for planting in Xinjiang in the hope of providing basis for the breeding and promotion of new sweet potato varieties in the region. 【Method】 AMMI model was used to comprehensively evaluate 5 sweet potato varieties and 3 pilots in the regional experiment of sweet potato varieties in Xinjiang Autonomous Region from 2018 to 2019 and analyze the stability and high yield of 5 sweet potato varieties and the discrimination of 3 pilots. 【Result】 The stability of Z15-1 and H6-1 was higher than that of Xushu 18. Z15-1 was a high and stable yield variety, which could be used as a demonstration variety. H6-1, Indonesian purple sweet potato belonged to low-yield and stable varieties; Yanshu No. 25 and Xushu No. 18 were high-yielding and unstable varieties. Wusu had the highest selection of varieties and had strong representativeness, while Yining had low discrimination. 【Conclusion】 Z15-1 shows good overall performance, and can be popularized and planted in Xinjiang sweet potato producing area. Yanshu No. 25 and Xushu No. 18 are high-yielding and unstable varieties, which can be demonstrated and popularized in local areas.