‘Shulyu No.1’is a new vegetable-used sweet-potato variety，developed by crossing‘ Tainong
71’as female parent and‘Guangshucai No.2’as male parent with a controlled hybrid method．Its plant type is
semi-erect with multiple branches and heart-shaped leaves．The top leaf is green-yellow in color，and leaf base
and vein are both green in color．Its root is of long elliptic shape with white skin and flesh．There is no fuzzes
on its stem tip．The color is turning from bluish green to green after being boiled．It tastes a little sweet without
bitter flavor，and with soapy feeling．It has good tastes．This variety is highly resistant to stem nematode，
resistant to Fusarium wilt．Within the 3 months under the trial conditions in national breeding program，it yields
about 27 t· hm^-2．It can produce all year round under protected field condition．And the yield is above 75 t·
hm^-2．It is suitable for cultivation in Jiangsu，Shandong，Henan，Zhejiang，Sichuan，Guangdong，Fujian and
Hainan Provinces as leaf-vegetable．