Genome. 1995 Feb;38(1):60-7. doi: 10.1139/g95-007.
The ability of Solanum tuberosum Group Andigena clones to produce triploids (2n = 3x = 36) in 4x(4 endosperm balance number (EBN)) x 2x(2EBN) crosses was investigated. The difference in triploid production among the clones tested, though large, appears to be the result of low heritability. The triploids produced in the 4x x 2x crosses did not seem to bear heritable factors that improved triploid production in 2x and 4x populations derived from them. Yet, the seeds/fruit data from a similar 4x x 2x cross fit a Poisson distribution. It was argued that the low probability nonheritable random events responsible for the triploids from 4x x 2x and 2x x 4x crosses were misfertilizations, mitotic abnormalities in the gametophyte, and (or) mitotic misdivisions in the endosperm.
研究了安第斯马铃薯组克隆体在 4x(4 个胚乳平衡数（EBN）) x 2x(2EBN)杂交中产生三倍体（2n = 3x = 36）的能力。尽管测试的克隆体之间产生三倍体的差异很大，但似乎是低遗传力的结果。在 4x x 2x 杂交中产生的三倍体似乎不具有可遗传的因素，可以提高它们衍生的 2x 和 4x 群体中的三倍体产量。然而，来自类似的 4x x 2x 杂交的种子/果实数据符合泊松分布。有人认为，导致 4x x 2x 和 2x x 4x 杂交三倍体的低概率非遗传随机事件是错误受精、配子体中的有丝分裂异常和（或）胚乳中的有丝分裂错误分裂。
