Gladiolus, or sword lily, is one of the most important cut flowers worldwide. Enhancement of its traits is of paramount importance to the flower industry. The application of 24-epibrassinolide (EBR) by corm priming and plant foliar spray to improve morphological, biochemical and postharvest characteristics of Gladiolus grandiflorus cv. Oscar were investigated. Concentrations of 0.5, 1, and 2 µM EBR as well as distillated water as a control were used for both corm priming and foliar spray treatments. Results showed that the highest levels of corm sprouting and flower spike emergence were obtained at 1 µM EBR. Floret numbers, flower spike fresh and dry weight, and vase life showed the highest values at 1 µM EBR combined treatments. The combination of corm priming at 2 µM and foliar spay at 1 µM EBR, showed the highest effect on malondialdehyde reduction. The highest activities of antioxidant enzymes such as catalase, peroxidase, and superoxide dismutase were obtained in combination of 1 µM EBR corm priming and 1 µM EBR foliar spray. EBR treatments prolonged vase life from 8 to 14 days and significantly improved gladiolus morphological and biochemical traits.
Horticulture, Environment, and Biotechnology – Springer Journals
Published: Apr 25, 2018
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