Fig 1.
Effect of alternating day/night temperatures and light regimes on seed germination of turnip weed seeds from Gatton (RRG) and St George (RRS) incubated at 15/5, 20/10, 25/15 and 30/20°C light/dark and dark in a 12-h photo-period for 21 days.
Error bars are LSD (p≤0.05, n = 6).
Fig 2.
Effect of osmotic potential on the germination of two populations of turnip weed from St George (RRS) and Gatton (RRG) incubated at 25/15°C day/night temperatures in a 12-h photoperiod for 21 days.
Lines represent the functional three- parameter sigmoid model fitted to the data. Error bars are standard error of mean (n = 6).
Fig 3.
Effect of sodium chloride (NaCl) on the emergence of two populations of turnip weed from St George (RRS) and Gatton (RRG) incubated at 25/15°C day/night temperatures in a 12-h photoperiod for 21 days.
Lines represent the functional three-parameter sigmoid model fitted to the data. Error bars are standard error of mean (n = 6).
Fig 4.
Effect of buffered pH solutions on the germination of two populations of turnip weed from St George (RRS) and Gatton (RRG) incubated at 25/15°C day/night temperatures in a 12-h photoperiod for 21 days.
Error bars are LSD (p≤0.05, n = 6).
Fig 5.
Effect of burial depth on seedling emergence of two populations of turnip weed from St George (RRS) and Gatton (RRG) in a pot study for 21 days.
Error bars are standard error of mean (n = 8).