The effect of environmental conditions during seed maturation on germination of chickweed (Stellaria media (L.) Vill.) | Uticaj uslova sredine tokom sazrevanja na klijanje semena misjakinje (Stellaria media (L.) Vill.)
2008
Jovanovic, V., Institut za pesticide i zastitu zivotne sredine, Beograd (Serbia) | Janjic, V., Institut za pesticide i zastitu zivotne sredine, Beograd (Serbia) | Nikolic, B., Institut za zastitu bilja i zivotnu sredinu, Beograd (Serbia) | Stankovic-Kalezic, R., Institut za pesticide i zastitu zivotne sredine, Beograd (Serbia) | Ghalawnji, N., Institut za bioloska istrazivanja Sinisa Stankovic, Beograd (Serbia) | Giba, Z., Bioloski fakultet, Beograd (Serbia)
We investigated the effects of environmental conditions existing during seed maturation of chickweed (Stellaria media (L.) Vill.), a frequent and widespread weed species, on their germination in the dark and after irradiation. Seed were sampled from chickweed plants grown inside a glasshouse and those growing wild outdoors in the vinicity of the glasshouse at 3-9 day intervals from mid-February to early June 2007. When fruit were setting in both populations simultaneously, the seeds were collected on the same dates inside and outside the glasshouse. Despite the different conditions in which seeds had matured, no statistically significant difference was detected in germinability in the dark between the seeds sampled inside and outside the glasshouse, except in two of the 14 pairs of samples collected in the same dates. On the other hand, there were considerable and statistically significant differences in germinability depending on sampling dates. Irradiation of imbibing seeds with white daylight stimulated germination of all samples and significantly decreased the differences in germinability of seeds collected on different dates, while not eliminating them fully.
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