has_part inheres_in abnormal heterochromatin organization during vegetative growth increased duration of heterochromatin maintenance FYPO:0004544 midori increased duration of heterochromatin maintenance during vegetative growth increased duration of heterochromatin maintenance during mitotic cell cycle prolonged heterochromatin maintenance A cellular process phenotype observed in the vegetative growth phase of the life cycle in which the duration of heterochromatin maintenance is longer than normal. Heterochromatin maintenance is the process that preserves heterochromatin in a stable functional or structural state. 2015-04-02T15:14:36Z