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Some factors affecting the germination of seeds and plant responses to herbicides of three species of smartweed Polygonum pensylvanicum L., Polygonum persicaria L. and Polygonum lapathifolium L

Bayer, D.E.

Dissert.Abstr 19(4): 622-3. Price: $2.00

1958


Accession: 014190611

Intact seeds of P. pensylvanicum (1) and P. persicaria (2) after-ripened most rapidly when submerged in water and held at 2 degrees C for 4-6 weeks; seeds of P. lapathifolium (3) after ripened slightly faster when submerged in 0.2% potassium nitrate and held at 2 degrees C than in water, but after 4 weeks pre-treatment there was no difference. Scarifying mechanically or with sulfuric acid reduced the pre-treatment time 50%. Light increased the germination of (3) but not of (2) or (1).

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