论文部分内容阅读
以151个玉米自交系为材料,对玉米茎秆高糖种质资源进行了筛选与评价。结果表明,自交系茎秆含糖量(B rix)变化范围为3.5%～16.9%,能为茎秆高糖玉米新品种选育所利用的自交系(B rix≥10%)种质资源比较丰富,约占测定自交系总数43.1%。通过聚类分析,151个玉米自交系按茎秆含糖量差异可分为3大类,第3类属于茎秆高糖类型(12.3%～16.9%),共有22个自交系,这一类群种质可能是培育茎秆高糖玉米新品种的重要亲本材料,其中78599-1-550、78599-2、YXD053-646、Y53-245、预CY509等5个自交系尤其适合作为茎秆高糖玉米育种亲本。
151 maize inbred lines were used as materials to screen and evaluate the high sugar germplasm resources of corn stalk. The results showed that the inbreeding line (B rix) ranged from 3.5% to 16.9%, which could be used as inbred line (B rix≥10%) for breeding new varieties of high-sugar corn stems Resource is rich, accounting for about 43.1% of the total number of inbred lines. According to the cluster analysis, 151 maize inbred lines can be divided into three groups according to the difference in stem sugar content, and the third group belongs to the high sugar type (12.3% -16.9%) of stems, with 22 inbred lines One group of germplasm may be an important parent material for cultivating new varieties of high-sugar corn stalk. Five inbred lines, 78599-1-550, 78599-2, YXD053-646, Y53-245 and pre-CY509, are especially suitable as stems Straw high sugar corn breeding parents.