Study of ecological factors on characteristics of germination of Phalaris minor and Bromus tectorum

Document Type : Research paper


1 Department of Agronomy and Plant Breeding, Faculty of Agriculture, Ilam University, Iran

2 Ph.D. of Weed Science, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran.

3 Ph.D. of Agronomy, Ayatollah Amoli Branch, Islamic Azad University, Amol, Iran


In order to recognize the ecological factors on characteristics of germination of Phalaris minor and Bromus tectorum, germination tests were conducted in a randomized complete block design with four replications at the Faculty of Agriculture, Ilam University. The effect of temperature on seed germination in germinator at 15/15, 20/25, 15/30 and 30/20 °C night/day, salinity effects using solutions 0, 10, 20, 40, 80, 160, and 320 mM sodium chloride and acidity effects were investigated using buffered solutions with pH adjusted to 5 to 9. To study the effect of seed burial depth on the emergence of seedlings in seeds in the research greenhouse of Lorestan University, the seed of each plant was buried at depths of 0, 1, 2, 3 and 4 cm. The results showed that the effect of different temperatures on the germination of both plants was significant. So that the highest and lowest germination percentage were at 25/15 (night/day) with 95.5% and 20/20 (n / d) with 0%, as well as germination in both dark regimens Absolute and darkness/brightness for Cheatgrass at temperatures of 25.15, 20.10 and 15.5 ° C was 94%, and no germination was observed at 20/20 °C. Increasing salinity reduced germination for both plants. By increasing the depth, the seedlings of two plants decreased. The lowest and the highest germination percentage of Canary grass in acidity 5 with 30% and in acidity 7 with 96% and in Cheatgrass in acidity 7 were observed and the highest germination with 95% and the lowest in acidity 9 was 26% also were observed.

Graphical Abstract

Study of ecological factors on characteristics of germination of Phalaris minor and Bromus tectorum


  • The results showed that the percentage and speed of germination of weed were affected by acidity.
  • Increasing salinity reduced germination percentage.


Main Subjects

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