Morphological And Biochemical Responses Of Broccoli Florets To Supplemental Ultraviolet-B Illumination
Autor: | Hilal Sahin-Nadeem, Adem Dogan, Yasin Topcu, Zehra Kasimoglu, Ersin Polat, Mustafa Erkan |
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Rok vydání: | 2018 |
Předmět: |
0106 biological sciences
chemistry.chemical_classification Antioxidant Ecology medicine.medical_treatment Flavonoid food and beverages Glucotropaeolin 04 agricultural and veterinary sciences Ascorbic acid 01 natural sciences 040501 horticulture chemistry.chemical_compound Horticulture chemistry Sinigrin Glucosinolate medicine Animal Science and Zoology Dry matter 0405 other agricultural sciences Agronomy and Crop Science Carotenoid 010606 plant biology & botany |
Popis: | The effect of different doses of supplemental ultraviolet-B (UV-B) illumination on yield, plant growth, biochemical changes and antioxidant activity of broccoli florets was evaluated. The broccoli plants were grown under three different supplemental UV-B illumination doses (2.2, 8.8 and 16.4 kJ m−2 d−1) in the glasshouse. Plant height decreased with increasing supplementary UV-B illumination dose. However, leaf thickness increased with increasing UV-B dose. Chlorophyll content in the leaves also increased during the growing period. The lowest chlorophyll content was found at 16.4 kJ m−2 d−1 UV-B dose. Total yield decreased with supplemental illumination, especially at 16.4 kJ m−2 d−1 illuminated dose. Total dry matter, total soluble solids, carotenoids, chlorophyll a and b content in broccoli florets decreased with increasing UV-B illumination dose. Conversley, ascorbic acid, sinigrin, total phenolic, and flavonoid content and antioxidant activity increased in UV-B illuminated florets. Surprisingly, glucotropaeolin content, one of the forms of glucosinolate in broccoli, was not affected significantly by UV-B illumination or enhanced by UV-B illumination doses. |
Databáze: | OpenAIRE |
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