Germination behaviour of seeds from herbicide treated plants of Chenopodium album L.
The carry-over effect of sub-lethal herbicides was investigated on the germination of seeds collected from surviving Chenopodium album plants, which had received 1/8, 1/8 twice, 1/8 three times, 1/4, 1/2, 1/1 doses of either pre-emergence ioxynil or post-emergence bentazone in a previous onion (Allium cepa) crop. Seeds were also collected from surviving C. album plants, which had received 1/4, 1/2, 1/1 of either pre-emergence pendimethalin, propachlor and linuron, or 1/8, 1/8 twice, 1/8 three times, 1/4, 1/2, 1/1 of post-emergence ioxynil or linuron in a previous leek (Allium porrum) crop. Seeds of surviving plants were collected and tested for germination at temperature of 5, 10, 15, 20 and 25 degrees C. The effect of different temperatures on the total number of germinated seeds was significant. Germination was minimum at low temperatures (5 degrees C or 10 degrees C). Herbicides did not show any effect on germination of C. album and resulted in the same final germination percentage as seeds collected from the unsprayed control plots.
Tanveer
Asif
A
Department of Agronomy, University of Agriculture, Faisalabad, Pakistan. drasiftanveeruaf@hotmail.com
Nadeem
Muhammad A
MA
Ali
Asghar
A
Tahir
Muhammad
M
Zamir
Muhammad S I
MS
D027463:Chenopodium album / Q000187:drug effects* / Q000502:physiology; D018525:Germination / Q000187:drug effects* / Q000502:physiology; D006540:Herbicides / Q000494:pharmacology*; D010573:Pesticide Residues / Q000494:pharmacology*; D012639:Seeds / Q000187:drug effects* / Q000254:growth & development; D013696:Temperature
D006540:Herbicides; D010573:Pesticide Residues