Seed germination of Rumex hastatus D. Don.

The present study investigates the germination requirements of the seeds of Rumex hastatus with respect to temperature, light and substrate. Both fiel d and laboratory studies indicate that temperature 27-28 degrees C, light a nd soil condition are important factors governing germination of seeds prod uced either in June or December. Unfavourable temperature regimes prevent w inter seeds from germinating for seven months but favourable temperature en ables summer seeds to germinate within a month after collection. Summer see ds are at an advantage because seed viability declines with storage time.