Abstract ‘Heitiannuo 639’is a black sweet waxy corn F1 hybrid bred by crossing waxy corn inbred
line‘HNF’as female parent and sweet corn inbred line‘D91’as male parent. Its growth period is 91 days.
The plant is 263 cm in height and ear height is 151 cm. The main axis and branch angle of male ear is medium.
There are 18-23 branches of first stair. Its ear is of post-box type. The grain is black purple in color. The
proportion of sweet and waxy grains is 1∶3. The content of soluble sugar is 12.5%，and amylopectin accounts
for 98.1% of the total starch content. It has good flavor. It is highly resistant to smut，stem rot，leaf spot，ear
rot and dwarf mosaic. The average fresh ear yield is about 13.5 t · hm-2. It is suitable to be planted in fresh eating
waxy corn production area of Shanxi Province.
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Received: 12 October 2019
Published: 02 January 2020
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