一、甜玉米的营养品质和加工利用甜玉米可分为两大类:一类是普通甜玉米,是由于Su_1隐性突变基因纯合而引起的胚乳缺陷.Su_1突变体的籽粒在乳熟期,胚乳中约含有10—15%糖分,相当普通玉米的2.5倍,因而吃起来较甜.另一类是超甜玉米,它是和普通甜玉米比较而言的,其遗传背景比较复杂,是六十年代以后发展起来的新类型.目前生产上推广的是Sh_2基因为背 First, the nutritional quality of sweet corn and processing and utilization of sweet corn can be divided into two categories: one is the common sweet corn, Su_1 recessive mutant gene homozygosity caused by endosperm defects.Su_1 mutant grains in milk stage , The endosperm contains about 10-15% sugar, 2.5 times the ordinary corn, so eat more sweet and the other is super sweet corn, which is compared with the normal sweet corn, the genetic background is more complex, is Since the 1960s, the new type has been developed. At present, the promotion of production is that the Sh_2 gene is back