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对不同采收期、不同贮藏温度和贮藏时间的超甜(sh_2)、普通甜(su_t)和加强甜(su_1se)玉米杂交种以及大田玉米杂交种的还原糖含量、蔗糖含量、水溶多糖(WSP)含量以及水分含量等进行分析发现,在甜玉米类型中 sh_2杂交种在各个采收期总糖含量都是最高,su_1se次之,su_1最低。但 su_1的 wsp 含量最高,su_1se 与之接近,sh_2最低,与普通玉米相同。以糖分和水分为根据,认为普通甜玉米的合适采收期为授粉后18～26天,积温为306.2℃～420.2℃,加强甜玉米可以适当放宽,但超甜玉米合适采收期应在授粉20天之后。三种甜玉米在28℃下贮藏,糖分和水分含量都迅速降低,但超甜玉米有较强的保鲜能力。在4℃条件下贮藏一周,普通甜玉米和加强甜玉米糖分含量只降低10%,超甜玉米虽然降低了25.8%,但含糖量还保持在35%以上,说明低温贮藏对保持甜玉米的优良品质是十分重要的。
The contents of reducing sugar, sucrose, water-soluble polysaccharides (WSP) in hybrids of sh_2, su_t, and su_1se, and field maize hybrids with different harvest time, storage temperature and storage time ) Content and moisture content were analyzed. The results showed that the total sugar content of sh_2 hybrids was the highest in all types of sweet corn, su_1se was the lowest and su_1 was the lowest. However, su_1 has the highest content of wsp, su_1se is close to it, and sh_2 is the lowest, which is the same as that of ordinary maize. Based on sugar and water, the suitable harvest period of common sweet corn is 18 ~ 26 days after pollination, the accumulative temperature is 306.2 ℃ ~ 420.2 ℃, sweet corn can be moderately relaxed, but the suitable harvest period of super sweet corn should be at pollination After 20 days. Three kinds of sweet corn stored at 28 ℃, sugar and moisture content decreased rapidly, but super sweet corn has a strong ability to retain. Storage at 4 ℃ for one week, the average sweet corn and sweet corn sugar content decreased by only 10%, while the sweet corn decreased by 25.8%, but the sugar content remained above 35%, indicating that the low temperature storage of sweet corn Good quality is very important.