Paper Details

Germination responses of wild mustard (Sinapis arvensis) to interaction effect of water potential and temperature

Omid Lotfifar, Iraj Allahdadi, Eskandar Zand, Gholam Abbas Akbari

DOI: https://dx.doi.org/10.12692/ijb/4.6.37-44

Int. J. Biosci. 4(6), 37-44. March, 2014. (PDF)

Abstract:

Wild mustard is one of the third common weed in wheat field of Iran. Knowledge of the germination requirements of wild mustard will help in determining the favorable conditions for germination and emergence and allow better management of this weed. This experiment was conducted to determine the effects of simulated dry conditions (use PEG) and temperature on seed germination of wild mustard (Sinapis arvensis). Over a 21d period, germination was studied in seven growth chambers with of 5, 10, 15, 20, 25, 30 and 35°C constant temperatures and water potentials of 0, -0.2, -.04, -.06, -0.8 and -1.0 MPa at seven temperatures. Seeds used in this experiment were harvested seeds from wheat field of Kermanshah-Iran. Result showed in all temperatures increase in water potential caused to reduce in final germination and germination index. More than 60% of the seeds germinated in first seven days at water potentials of 0.0 MPa when temperature was lower than 25°C and at water potential of -0.2 MPa when temperature was 20-25°C but the germination was reduced in solutions of lower than -0.4 MPa. The final germination was most at 10-20°C, intermediate at 5°C, and least at 30-35°C. If the growth condition is favorable, the finish germination seed of Wild mustard within 10 days.