LI Jianwu1，2，ZHANG Rong1，2，LI Gaofeng1，2，LI Zhang1，WANG Shulin1，2，WEN Guohong1，2*
1Institute of Potato，Gansu Academy of Agricultural Sciences，Lanzhou 730070，Gansu，China；2National Germplasm Resources Agricultural Experimental Station，Weiyuan 748201，Gansu，China
Abstract：‘Longshu No.22’is a new potato variety through sexual hybridization，selection and identification with‘Longshu No.7’as female parent and‘L0527-4’as male parent．It is of late maturity．The growth period is about 125 days，the plant with 75-80 cm high，green stems and leaves is semi erect．The corolla with white and nearly pentagonal is large．The tuber with yellow skin and yellow flesh，and shallow eyes is oval shape．The dry matter content is 265.7 g · kg-1，starch content is 197.3 g · kg-1．The weight of single tubers was about 113.7 g，the proportion of large and medium tubers was more than 80%．The yield is about 28.5 t · hm-2．This resistance of field to late blight and mosaic virus disease was similar to that of the control‘Longshu No.6’．It is suitable for planting in high cold and damp area，semi-arid region of Gansu Province．
