在甜高粱上利用杂种优势的探讨  

Discussion on utilization of heterosis in sweet sorghum

作　　者：曹文伯[1] 

机构地区：[1]中国农业科学院作物品种资源研究所,北京100081

出　　处：《植物遗传资源科学》2002年第3期15-20,共6页

摘　　要：从1978年起,配制了甜×甜、甜×不甜、不甜×甜的三种类型百余个杂交组合,观察高粱杂交种糖分含量的变化,以了解杂种优势在该性状上的表现。试验表明应用三系培育甜高粱杂交种,同粒用高梁一样具有明显的杂种优势,主要表现在生活力及生产力的提高。在与糖产量有关的三因素中,以单(株)秆重的优势最为显著;杂交种的含糖量,一般表现为介于双亲之间;茎秆汁液的多少,关键是选择实心、多汁、高糖的亲本及其组配方式。提高单位面积产糖量,主要是通过增加茎秆总收获量来实现。The major economic traits and the sugar content in the stem of sweet sorghum were analyzed by three types of crosses,sweet×sweet,sweet×no sweet and no sweet×sweet in more than 100 combinations.The results showed that the sorghum hybrids used for sugar also have obvious heterosis as the hybrids for grain.This means that heterosis can also be used for sugar production in sorghum.There are three factors influencing the sugar yield.The most remarkable one is the stem weight of per individual. The sugar content of the hybrid is usually between its two parents.It also showed that using lines with characters such as more juice,high sugar content,solid stem,to make the hybrids would be benefit for sugar production.The stem yield also affected the final sugar yield significantly.

关 键 词：甜高梁 含糖量 杂种优势 育种 经济性状 杂交 

分 类 号：S566.5[农业科学—作物学]