They are complex polyploids, being partly tetraploid and partly hexaploid . 它们是复杂的多倍体，其中一部分是四倍体，一部分是六倍体。
2.
Studies on the hexaploid interspecific hybrid and its backcross with cultivars in strawberry 草莓六倍体种间杂种及其回交研究
3.
Study on heterosis and combining ability of male sterile system of hexaploid triticale with t . timopheevi cystoplasm 型细胞质雄性不育体系杂种优势与配合力的研究
4.
Because of the huge genome and high ratio of repeat sequences in hexaploid wheat ( triticum aestivum ) , identifying and cloning of genes with important functions from wheat meet many difficulties 摘要小麦基因组庞大，重复序列多，重要功能基因的克隆存在很大困难。
5.
Stoma of polyploids ( include hexaploid and octoploid ) were larger and spaced father apart on the undersurface than diploids , the stoma density of triploids and tetraploids were 60 - 70 % of corresponding diploids , and the stoma density of hexaploids and octoploids were 30 - 40 % of diploids 73为三倍体和四倍体区别于二倍体共有的特征带； itrai 70为四倍体的特征带。 sod同工酶酶活性较弱，共分离6条带， ro
6.
Distribution zone of diploid individual are the most extensive in china , while no tetraploid plant is found north of 40 degree north latitude , and hexaploid populations distribute mainly along the changj iang river , is found only in three populations in the yunnan - guzhou plateau . the hexaploid cytotype of var 4细胞地理学研究表明，二倍体占据我国最广大区域，而四倍体分布区的北界则向南迁至40 n ，六倍体主要分布于25 n - 33 n的狭长地带，八倍体则在云贵高原中部及东部边缘零星分布。
