‘Ziyunuo 839’ is developed by crossing‘ Bainuo 9103’ as female parent and inbred line‘ Cainuo
8101’ as male parent．It is a F₁ hybrid of sweet and waxy corn．It is of medium maturity．It takes about 100
days from seed emergence to harvest．It is of semi-compact plant type．Its plant has strong growth vigor and
its root system is well developed．It is resistant to lodging．The total leaf numbers are 17-19．It is 230 cm in
plant height，and 107 cm in ear position height．Its fresh ear is of taper shape．The ear length is 20.3 cm，
spike thickness is 4.9 cm．There are 14-16 rows in each ear and 42 grains in one line．The grains are white and
purple in color．Its fresh ear yield is 15-18 t·hm^-2．Its quality is excellent．The amylopectin content in grain
takes 98.03%．It has strong resistance to disease．It is medium resistant to corn stalk rot，maize dwarf mosaic
disease，and resistant to maize red leaf disease．It is suitable to be planted in Gansu Province，Xinjiang and
Inner Mongolia Autonomous Regions．