本帖最後由 samuelx1231 於 2016-3-8 23:33 編輯
anyway, according to a 2005 research, the causes of sterility in bauhinia x blakeana are obscure
it has the same diploid chromosome number as its parental species, but the slight difference in the karyotypes might have contributed to the sterility
there is no clear-cut methods to determine whether a hybrid will be fertile or not, and hybrid in animal cases cannot always apply to plants
nature is complicated and science still has much to learn |