'Qushu No.6'is a new orange-fleshed sweet potato variety bred by crossing'Yanshu No.5'as female parent and'Zheshu 70'as male parent.It is of semi-erect type with short vines and average of 5.3 basal branches.The root type is spindle-shaped with purplish-red peel and orange flesh.The single plant can beat 5-7 roots.The average proportion of large and middle roots is 91.79%,dry matter rate is 30.65%,starch rate is 18.24%,protein content is 1.46%,soluble sugar content is 3.15%,and β-carotene content is 590 μg·kg-1.It has soft and sweet taste,and resistant to storage.It is resistant to stem-nematode,and medium-resistant to Fusarium wilt.The fresh root yield is about 30 t·hm-2,and dried root yield is about 9.75 t·hm-2.It is suitable for spring and summer potato planting in Zhejiang Province and ecologically similar areas.
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