Author/Authors :
Hashemabadi Davood نويسنده Department of Horticulture, Rasht Branch, Islamic Azad University, Rasht, Iran. , Zaredost Fatemeh نويسنده Yanug Researchers and Elite Club, Rasht Branch, Islamic Azad University, Rasht, Iran , Jadid Solimandarabi Maryam نويسنده Yanug Researchers and Elite Club, Rasht Branch, Islamic Azad University, Rasht, Iran
Abstract :
Magnetic field improved germination parameters. The germination
of Catharanthus roseus seeds is lost under salinity conditions. The effect of
different strengths of magnetic field and exposure durations on the germination
of C. roseus seeds under salinity conditions (19 mS cm-1) were investigated.
The experiment was conducted with factorial arrangement based on a
completely randomized design (CRD) with 3 magnetic field strengths (50,
100 and 150 mT) and 3 exposure durations (10, 20, and 30 minutes). It was
found that exposure to magnetic field improved seed germination under
salinity conditions, so that the highest germination percentages of (74.44 and
73.05%) were obtained from 20 and 30 minutes exposure to the 100 mT
magnetic field, respectively, which resulted in 28% higher germination than
control. Also, these treatments were found to be the best for germination rate
and vigor indices I and II. The highest radicle length (2.37 cm) and plumule
length (3.50 cm) were related to the 20 minutes exposure in 50 mT magnetic
field and the 10 minutes exposure in the 100 mT magnetic field. The highest
radicle dry weight of 0.24 g and plumule dry weight of 0.81 g was observed
in treatment of 10 minute exposure to the100 mT magnetic field.
