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Abstract A new F1 hybrid variety of carrot‘Tianhong No.5’was selected by using males sterile three-line
methods.Its female parent is HLBcms005 and male parent is HLBm005.The plants grow upward and strongly.The plant high
is about 62 cm with 10 leaves.Its fleshy roots are uniform,of column shape.The average root length is 14.47 cm.The
root width is 4.06 cm and average root weight is 106.92 g.Its carotene content amounts to 70.28 mg·kg-1(FW).The
soluble solid content is 9.11 %.Its growing period is 100-105 days.The average yield is 48 t·hm-2.There are 420
000-450 000 plants per hm2.It is suitable for spring sowing,the bolting percentage is 0.26 %.
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