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从大量解剖标本中获得了米象、玉米象外形特征上各自典型的代表型和中间型,以及外生殖器上完全相似的变异型、发育不全型和过度型。将性隔离二个月的个体人为地强行混种杂交,观察到异交现象普遍,并有少数亲体产生了F_1代。故此认为:米象、玉米象之间很可能有亲缘关系极近的地理宗,或它们的某些个体,具有对异种的生殖潜能。
Obtained from a large number of anatomical specimens of rice, corn appearance characteristics of the typical representative of the middle and type, and genitalia completely similar variants, hypoplasia and over-type. The individuals who had been sexually separated for two months were artificially forced to crossbreed, observed that the phenomenon of out-crossing was common and that a few parents had F_1 generation. Therefore, it is considered that there is a high probability that there may be geographical clans between the elephants and the corn elephants, or some individuals of them, having the potential to reproduce different species.