مشخصات پژوهش

صفحه نخست /EFFECT OF POLYAMINES ...
عنوان
EFFECT OF POLYAMINES APPLICATION ON GERMINATION AND PHYSIOLOGICAL CHARACTERISTICS OF BORAGE (Borago officinalis L.)
عنوان مجله Agriculture and Forestry
نوع پژوهش مقاله چاپ شده
کلیدواژه‌ها
Pre-treatment, Polyamines (PAs), Germination, Vigor index, Amylase enzymes, Emergence
چکیده
The aim of study was determine the advantages of re-drying after seed priming by polyamines. As biologically active compounds, polyamines (PAs) have been considered as modulator of plant growth and development, they play a significant role in plant response to environmental stress. The effects of polyamines priming on seed germination, emergence and seedling growth of borage plants was investigated by a laboratory experiment in factorial layout with complete randomized design (CRD) conducted in three replications. The seeds were classified into five sub-samples one of which was kept as control (unprimed) while the rest of them were primed with polyamines. Seeds pre-treatments included: control (unprimed), water pretreatment for 4 and 8 h, spermidine at 5 and 5.5 mM for 4 and 8 h, spermine at 2.5 and 3 mM for 4 and 8 h, putrescine at 2.5 and 3 mM for 4 and 8 h. Sseed treatments with polyamine led to earlier and enhanced germination. Improved seedling length, seedling fresh and dry weight as well as vigor index were found in polyamine-treated seeds. Moreover, the majority of priming treatments enhanced seedling emergence percentage, emergence energy and coefficient of uniformity of emergence (CUE) as compared with control samples. Non-primed seeds (control samples) significantly showed the least α-amylase and β-amylase activity (0.293 and 4.923 U.mg -1 Protein, respectively ) and shortest of plant height. 4-hour seed treatment by 3mM putrescine and 8-hour treatment with 3mM spermine were recognized as the most effective treatments in most of the studied traits.
پژوهشگران امیر اسدی دانالو (نفر اول)، فریبرز شکاری (نفر دوم)، ناصر صباغ نیا (نفر سوم)، یوسف نصیری (نفر چهارم)