Department of Plant Biology, University of Birmingham, England.
Theor Appl Genet. 1978 Nov;52(6):241-9. doi: 10.1007/BF00303500.
Parthenogenetic seed induction was performed on one clone of Solanum tuberosum subspecies andigena (2n=4x=48) using S. phureja (2n=2x=24) marker inducer clones. The parthenogenetic population when grown was found to contain both diploid and tetraploid individuals presumably arising from reduced and unreduced gametes, respectively. Variation patterns in the diploid and tetraploid sub-populations, as well as a population obtained by selfing the parental clone, were compared to try and elucidate the origin of the tetraploid parthenotes. From the results of this one generation it appeared that the tetraploid parthenogenetic plants had been produced by a mechanism equivalent to second division restitution (SDR).
利用 S. phureja（2n=2x=24）标记诱导克隆对 Solanum tuberosum 亚种 andigena（2n=4x=48）的一个克隆进行了孤雌生殖种子诱导。当生长时，发现孤雌生殖群体既包含二倍体个体，也包含四倍体个体，推测分别来自减数分裂和未减数分裂的配子。比较了二倍体和四倍体亚群体以及通过自交亲本克隆获得的群体的变异模式，试图阐明四倍体孤雌生殖的起源。从这一代的结果来看，似乎四倍体孤雌生殖植物是通过类似于第二次分裂还原（SDR）的机制产生的。
