Abstract:

To select the excellent potato varieties suitable for planting in the northern Shanxi Province, we collect fourteen domestic potato varieties for the comparative experiment lasting three years in the northern Shanxi province. We analyze the growth period, plant character, commodity of tuber and yield, and evaluate nutrient quality by using membership function method. It is shown that ‘Zhongshu No. 19' and ‘Jizhangshu No. 12' plants have the advantage of strong growth, high yield, high commercial potato rate, good stability, which are suitable for varieties of fresh food. The starch content of ‘Tongshu No. 23', ‘Tongshu No. 20'and ‘Zhongshu No. 19' plants is above 18%. These three plants have high average subordinate function value for nutritional quality, making them suitable for starch processing. Our results provide a reference for the selection of potato variety in northern Shanxi, and also pave the way for the utilization of potato germplasm resources and breeding work.

Key words: potato, variety, varied years, comparative experiment, stability analysis, nutritional quality