果蔬型甜玉米新品种京科甜179的选育

A New Fruit-vegetable Type Sweet Corn Cultivar—'Jingketian 179'

京科甜179是以超甜玉米自交系T68为母本,以T8867为父本组配而成的果蔬型甜玉米一代杂种,株型平展,植株长势强。鲜果穗筒形,果穗长18-20cm,穗粗4.5-4.9cm,大小均匀,籽粒黄白相间,每667m2鲜果穗产量800-1000kg。春播生育期82d（天）,鲜籽粒含可溶性糖33.6%,还原糖9.9%,皮渣率4.5%;夏播生育期72d（天）,鲜籽粒含可溶性糖23.5%,还原糖7.8%,皮渣率11.2%。适宜在北京、河北、山西、内蒙古、辽宁、吉林、黑龙江、新疆作鲜食甜玉米春播种植,适宜在北京、天津、河北、山东、河南、江苏淮北、安徽淮北、陕西关中灌区作鲜食甜玉米夏播种植。

‘Jingketian 179’ is a new fruit-vegetable type sweet corn variety developed by crossing ‘T68’ as female parent and ‘T8867’ as male parent. The plant is of flat shape with strong growth vigor. It has cylindric ears with equal size. Its ear is 18-20 cm in length and 4.5-4.9 cm in diameter. There are yellow-white kernels on the same ear. Its average yield is 12-15 t · hm-2. The growth period is 82 days for spring sowing, and the soluble sugar, reducing sugar contents, and residue rate in fresh kernels are 33.6%, 9.9%, 4.5%, respectively. The growth period is 72 days for summer sowing. The soluble sugar, reducing sugar contents, and residue rate in fresh kernels are 23.5%, 7.8%, 11.2%, respectively. It is suitable for cultivation in Beijing, Hebei, Shanxi, Liaoning, Jilin, Heilongjiang Provinces, and Inner Mongolia and Xinjiang Autonomous Regions in spring as table sweet corn, and for cultivation in summer in Beijing, north Anhui Provinces, and Guanzhong District of Shaanxi Tianjin, Hebei, Shandong, Henan, north Jiangsu, Province.