‘Tangcong 601’ is a new long-stalk welsh onion variety，developed by sexual hybridization
from crossing elite inbred line‘ 2010-1’ as female parent and selfing line‘ Yu11-8’ as male parent，through
continuous directional individual-mixing selection of 5 generations．The variety is about 150 cm in height and
has 4-6 leaves．The welsh onion stalk is over 65 cm in length and about 2.5 cm in diameter．The fresh single
plant weight is about 300 g．It can yield over 90 t · hm^-2．Its VC content is 108 mg · kg^-1（FW）and soluble
sugar content is 12.86%．It tastes sweet and crisp．It is highly resistant to Fusarium wilt and rust，resistant to
purple spot．It is suitable to be cultivated in Hebei，Beijing，Tianjin and Northeast China．