据圣地亚哥动物园，美国的每一只白虎都是单一的父本的后代。
According to the San Diego Zoo, every American white tiger is descended from a single father.
奥尔森矮源近等基因系对回交父本的小穗数没有影响，对旗叶长影响比较小；
The near isogenic lines with Oleson did not affect the spikelet numbers and flag leaf length of backcrossing male parents.
利用杂合子发育过程中来自父本的染色体完全、迅速地消失得到大量单倍体胚。
Haploid embryos which only with chromosome of female parent were obtained due to the chromosome elimination of pollen parent quickly and completely during the heterozygote development.
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