کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
11021738 1703047 2018 18 صفحه PDF سفارش دهید دانلود رایگان
عنوان انگلیسی مقاله ISI
Physiological Effect of Kinetin on the Photosynthetic Apparatus and Antioxidant Enzymes Activities During Production of Anthurium
ترجمه فارسی عنوان
اثر فیزیولوژیک کینیتین بر روی دستگاه های فتوسنتزی و فعالیت آنزیم های آنتی اکسیدان در تولید آنتوریم
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موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک جنگلداری
چکیده انگلیسی
The results observed in the literature raise the hypothesis according to which cytokinin plays important roles in photosynthetic metabolisms and antioxidant enzymes. Thus, the study aimed to evaluate the effect of foliar application of the isolated cytokinin kinetin at the production cycle, seeking to analyze its effects on enzyme activity and photosynthetic parameters. The plants treated with CK presented reduction of leaf CO2 assimilation rate (Pn) and stomatal conductance (Gs), while that transpiration rate (Tr) was unaffected. The internal CO2 concentrations decreased with the increase in cytokinin levels, but were maintained under CK 50 mg·L−1. The plants treated with CK 75 mg·L−1 was verified higher carboxylation efficiency (Pn/Ci), which was associated to values of CO2 assimilation and transpiration unaltered. Apparent electron transport rate showed variations in the concentration of 25 mg·L−1. Considering the study of enzyme activity, on the other hand, it cannot be stated that kinetin has an effective action in delaying oxidative damage. It presents mixed results, since an efficiency in the application of cytokinin was not observed, presenting induction levels of ascorbate peroxidase activity. Thus, further research is needed to determine more precisely the effects of kinetin on gas exchange and antioxidant enzymes in anthurium plants.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Horticultural Plant Journal - Volume 4, Issue 5, September 2018, Pages 182-192
نویسندگان
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