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。
However, there is no complete waxy mutant in hexaploid wheat under the natural condition and it need to be produced artificially.
然而，在自然条件下六倍体小麦中则无全糯质小麦存在，需要人工创造。
The number of chloroplast and chlorophyll content in the dodecaploid are more than hexaploid, stomatal density are lower than hexaploid.
同时，十二倍体较六倍体的叶绿体数目明显增多，叶绿素含量提高，但气孔密度减小。
The genetic diversity between Chinese endemic wheat landraces and other populations of hexaploid wheat was systematically analyzed. As compared with t.
首次对中国特有小麦与其他不同类型六倍体小麦之间的遗传差异进行了系统分析。
The male-sterile plants from the crosses between dominant male-sterile hexaploid triticale and durum wheat as well as bearded wheat were backcrossed many times with the same male parents.
用已育成的显性雄性不育六倍体小黑麦为母本分别与硬粒小麦、二粒小麦及黑麦杂交，并每代选不育株用原父本回交。
The male-sterile plants from the crosses between dominant male-sterile hexaploid triticale and durum wheat as well as bearded wheat were backcrossed many times with the same male parents.
用已育成的显性雄性不育六倍体小黑麦为母本分别与硬粒小麦、二粒小麦及黑麦杂交，并每代选不育株用原父本回交。
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