摘要： 对425份玉米自交系和1125份杂交组合的子粒品质进行测定,并对粗脂肪、蛋白质、粗淀粉的杂交优势和亲本的相关性作了探讨。结果表明,3种成分在不同材料存在显著差异,粗脂肪和蛋白质变幅和变异系数都较大,粗淀粉含量变幅和变异系数都较小,自交系中平均含量分别为4.24%,12.17%和71.10%,杂交组合中平均含量分别为4.86%,9.93%,72.56%。458个杂交组合子粒的3种成分含量与亲本的相关性均较低,粗脂肪的中亲优势和超亲优势均表现较大的正向,蛋白质均表现为负向优势,粗淀粉的杂交优势变异幅度较大,平均正向杂交优势较小。

关键词: 玉米, 近红外, 透射, 品质

Abstract: The kernel quality of 425 maize inbreds and 1 125 cross combinations were analyzed in this paper by using near infrared spectroscopy transmission(NIT) analyzer made by FOSS Company.The heterosis of roughfat(oil), protein and rough starch and the relativity between hybrids and their parents were also discussed.The study showed that the variance range and the variance indexes of roughfat and protein contentwere large, and those of roughstarchwere minor. The average content was 4.24%, 12. 17% and 71. 10% respectively for the roughfat, protein and roughstarch in inbreds, and 4. 86%, 9.93% and 72. 56% respectively in cross combinations.The relativity of the three components be tween hybrids and their parents was minor.The midadvantage and superadvantage were positive for roughfat, and nega tive for protein.The cross advantage variance range was larger for roughstarch, and the average value was minor. NIT is a new method for quality analyzer in crop breeding.

Key words: Nearinfrared, Transmission, Quality

中图分类号: 

• S513