نوع مقاله : مقاله کوتاه
نویسندگان
1 دانشجوی سابق کارشناسی ارشد، دانشکدۀ کشاورزی، پردیس بینالملل، دانشگاه فردوسی مشهد
2 استاد، دانشکدۀ کشاورزی، دانشگاه فردوسی مشهد
3 استادیار، دانشکدۀ کشاورزی، دانشگاه فردوسی مشهد
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
To investigate the effect of light intensity and light combinations on vegetative characteristics of petunia seedling(Petunia × hybrida 'Super cascade Blue'), an experiment was conducted as factorial in Completely Randomized Design with three replications Seedlings were treated for four weeks under two levels of light intensity includes 40 μmol.m-2.s-1and 60 μmol.m-2.s-1and three combinations of blue and red spectrum with ratios of 0% blue: 100% red, 15% blue: 85% red, 30% blue: 70% red and Fluorescent light. The result showed that fresh weight and dry weight, leaf area and stem caliper were superior less than 65 μmol.m-2.s-1 of 15% blue: 85% red ratio. Our results implied that specific light combination was able to compensate the negative effects of low light intensity because using 15% blue: 85% red ratio with 40 μmol.m-2.s-1compared to 0% blue: 100% red, 30% blue: 70% red and Fluorescent light at 60 μmol.m-2.s-1 light intensity lead to seedlings with superior vegetative characteristics.
کلیدواژهها [English]