Abstract: In order to clarify agronomic characteristics of asexual second-generation lines 2-1,3-1,4-4 and 19-3 selected from two potato combinations ‘J07-2’בLongshu No. 7’, ‘J07-6’בLongshu No. 7’ hybrid F₁, the main agronomic traits, such as growth period, plant height, tuber characteristics, tuber number per plant, yield per plant, mean tuber weight, the rate of commercial tuber, tuber dry matter content, starch content, reducing sugar content, and other agronomic traits, were determined and analyzed. Four hybrid asexual lines were late-maturing type, growth period was 127 d to 130 d, growth potentials were strong and average plant height was about 100 cm. The yield and quality of line 2-1 and line 19-3 were more prominent, mean tuber weight per plant, the rate of commercial tuber and yield per plant were high, eyes were shallow, tuber shape was good, the starch contents were 19.22% and 21.22% respectively, reducing sugar contents were 0.022% and 0.045% respectively, therefore they were good materials for breeding varieties of starch, fried food and fresh food. The correlation analysis showed that the yield per plant of hybrid clones was significantly positively related to growth period, plant height, tuber number per plant, commercial tuber rate. Mean tuber weight was significantly positively related to rate of commercial tuber. The tuber number per plant was significantly negatively correlated with mean tuber weight. The starch content was significantly positively related to dry matter content, and extremely significantly positively related to mean tuber weight and commercial tuber rate.