Weed Research (2002) 42, 148-155

A. Honek and Z. Martinková (2002)
Effects of individual plant phenology on dormancy of Rumex obtusifolius seeds at dispersal
Weed Research 42 (2), 148-155
Abstract: In 1998-2000, the relationship was investigated between the time of bolting of shoots and the percentage of germinability in seeds from individual plants of Rumex obtusifolius. Each year, the date of bolting of shoots was recorded in 30-108 plants, which were then grown intact until maturation, and their seeds were collected before dispersal. The proportion of germinable seeds increased with the date on which the shoots bolted. The timing of shoot bolting and seed germinability for individual plants persisted over the years of observation. To discriminate between the effect of mother plant and timing of seed maturation, shoot bolting of another 40 (1998) and 50 (1999) plants was recorded, and their shoots were then cut in late June The shoots of cut plants regrew and matured nearly simultaneously, later than in intact plants, whereas overall seed germinability decreased. In individual plants, the seed germinability was still significantly correlated with the date when plants originally bolted.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Alois Honek, Zdenka Martinkova

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Rumex obtusifolius (weed)		Czech Republic