کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2015007 1541964 2012 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Biochemical and biophysical changes associated with magnetopriming in germinating cucumber seeds
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک دانش گیاه شناسی
پیش نمایش صفحه اول مقاله
Biochemical and biophysical changes associated with magnetopriming in germinating cucumber seeds
چکیده انگلیسی

Seeds of cucumber were exposed to static magnetic field strength from 100 to 250 mT for 1, 2 or 3 h. Germination-percentage, rate of germination, length of seedling and dry weight increased by 18.5, 49, 34 and 33% respectively in magnetoprimed seeds compared to unexposed seeds. Among different magnetic field doses, 200 mT for 1 h showed significant effect on germination parameters and hence selected for studying changes in water uptake, 1H transverse relaxation time (T2), hydrolytic enzymes, reactive oxygen species and antioxidant enzyme system in germinating seeds. Water uptake and T2 values were significantly higher in treated seeds during imbibition. The activities of hydrolytic enzymes, amylase and protease were greater than the untreated controls by 51% and 13% respectively. Superoxide radicals also enhanced by 40% and hydrogen peroxide by 8% in magnetically exposed seeds. In magetoprimed seeds, increased activities of antioxidant enzymes, superoxide dismutase (8%), catalase (83%) and glutathione reductase (77%) over control was recorded. We report that magnetopriming of dry seeds can be effectively used as a pre-sowing treatment for seed invigoration in cucumber. Unlike other priming treatments seed is not required to be dehydrated after priming, allowing easy storage.


► Magnetic field (200 mT, 1 h) increased germination and vigour in cucumber seeds.
► Water uptake and NMR relaxation time higher in magnetoprimed seeds.
► Activity of hydrolytic enzymes enhanced in germinating SMF treated seeds.
► ROS content and antioxidant enzyme activity increased in magnetoprimed seeds.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Plant Physiology and Biochemistry - Volume 57, August 2012, Pages 67–73
نویسندگان
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