Bösen H, Nagl W
Cell Biol Int Rep. 1978 Nov;2(6):565-71. doi: 10.1016/0309-1651(78)90065-6.
Fraction labeled mitoses curves and caffeine-induced binucleate cell populations, respectively, were used to determine the duration of the mitotic and endomitotic cycle in roots of Allium carinatum, a leak with a 2C DNA content of 22.4 pg and a high proportion of heterochromatin. The mitotic cycle lasts, on an average, 8.1 h, the endomitotic one 7.5 h. These relatively short times (with respect to the nuclear DNA content) are discussed in the view of a possible role of heterochromatin in shortening cell cycle duration and possible advantage of the endomitotic cycle for rapid cell and tissue growth.
分别使用标记有丝分裂曲线和咖啡因诱导的双核细胞群体来确定棱叶蒜根尖有丝分裂和核内有丝分裂周期的持续时间，棱叶蒜是一种2C DNA含量为22.4 pg且异染色质比例较高的植物。有丝分裂周期平均持续8.1小时，核内有丝分裂周期持续7.5小时。鉴于异染色质在缩短细胞周期持续时间方面可能发挥的作用以及核内有丝分裂周期对细胞和组织快速生长可能具有的优势，对这些相对较短的时间（相对于核DNA含量而言）进行了讨论。
