1·I'm afraid the details are confidential, but I treated a tetraploid man once.
恐怕细节是机密的，但是我对待了一个四倍体的男人一次。
2·If such gametophytes produce fertile gametes, the resulting sporophyte is then tetraploid, and large polyploid series may subsequently be developed.
如果这种配子体能够产生可育的配子，那么形成的孢子体通常是四倍体，这样就可以得到大量的多倍体。
3·Thus, it is important that elucidate the genetic control of the crossability of Chinese tetraploid wheat with rye.
因此，研究中国四倍体小麦的亲和性问题具有特殊的意义。
4·Since the first tetraploid watermelon was obtained in 1939, polyploidy breeding has always been the focus of watermelon breeding.
从1939年获得第一个四倍体西瓜以来，多倍体育种就一直是西瓜育种的一个热点。
5·Homozygous tetraploid is a relatively balanced system, the continued selection is invalid.
纯合的四倍体是一个相对平衡的系统，继续选择是无效的。