ploidy

in 6 Out of 7 ploidy sufferers, the serum PSA was abnormal;4 out of 5 normal PSA are euploidy.

7整倍患6血清PSA不正常，5PSA正常4为非整倍。

The results show: ①Most progenies of self-bred autopolyploid still keep the original ploidy except a few progenies;

结果表明：①同源多倍自交后代大部分会保其原来的倍性，但会有个别的变化；

Homosporous ferns produce sporophytes by intra gametophytic selfing, inter gametophytic mating, or apogamy.Gametangium ontogeny, genetic load, and ploidy affect the mating system of each species.

摘要同型蕨类的可经由同配自交、异配交配两类配育系统或以无配生殖的方式产生，异配交配又可分为异配自交和异配异交两种方式。