1 Zhengzhou Agricultural Science and Technology Research Institute，Zhengzhou 450015，Henan，China；2 Xixian Bureau of Agricultural，Xinyang 464300，Henan，China
Abstract：‘Zhengfan 1733’is a new early maturity tomato F1 hybrid developed by taking‘13Y12-36- 8-12-hun-9-32-hun-hun’as female parent and‘14A4-66-18-6-53-hun-hun’as male parent．It belongs to infinite growth type，and strong plant growth potential．The commodity fruit is pink in color，and the younger one has green shoulder．The fruit is of round shape，with a fruit type index of 0.86 and high hardness．The single fruit average weight is 101 g．The soluble solid content is 7.3%，lycopene content is 239.0 mg · kg-1 ，VC content is 287.0 mg · kg-1 ，and total acid content is 0.78%．It contains I2，Mi1.2，Ve1，Ve2 homozygous resistance gene，and Ty1，Bwr12，Frl949，Mi23，Sm，Tm2 heterozygous resistance gene．It is resistant to TYLCV，TMV，CMV，leaf mold，blight，and root-knot nematode．The average production is about 72 t ·hm-2 ．It is suitable for planting in spring and autumn plastic tunnel，and overwinter greenhouses in Henan，Shandong，Hebei Province．
