کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10840446 | 1067695 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Free radical generation in Pinus sylvestris and Larix decidua seeds primed with polyethylene glycol or potassium salt solutions
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
دانش گیاه شناسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Electron paramagnetic resonance (EPR) spectra of Pinus sylvestris and Larix decidua seeds show that priming with PEG + 200 mg kg-1 gibberelic acid (GA3) results in appreciably higher free radical contents than in unprimed control samples. Only relatively minor changes in the free radical levels were observed in seeds primed with K+ salts. However, both priming treatments have been reported previously to result in faster germination rates compared to controls without changing the germination percentage. In measurements on individual seeds of L. decidua, there were no significant differences between the mean free radical levels in viable and non-viable seeds within each treatment group. Thus, the elevation in free radical levels in the PEG + GA3 treatments appear to be a direct consequence of the priming treatment and do not correspond to the initiation of germination.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Plant Physiology and Biochemistry - Volume 43, Issue 2, February 2005, Pages 117-123
Journal: Plant Physiology and Biochemistry - Volume 43, Issue 2, February 2005, Pages 117-123
نویسندگان
Christina Naglreiter, Thomas G. Reichenauer, Bernard A. Goodman, Harald R. Bolhà r-Nordenkampf,