|کد مقاله||کد نشریه||سال انتشار||مقاله انگلیسی||ترجمه فارسی||نسخه تمام متن|
|5762985||1412953||2017||3 صفحه PDF||ندارد||دانلود کنید|
â¢Hydropriming increased seed vigor of Chinese cabbage.â¢Prolonged storage significantly decreased the positive effect of hydropriming.â¢Activities of peroxidase and catalase decreased with the prolonged storage.â¢Accumulation of soluble sugar, soluble protein and malondialdehyde decreased the positive effect of hydropriming.
Primed seeds generally deteriorate and lose beneficial effects of priming during subsequent dry storage. Therefore, it is necessary to determine how long the positive effects of priming could maintain in primed seeds stored at ambient temperature. In present study, naturally aged Chinese cabbage seeds were hydroprimed at 20Â Â°C in the dark for 10Â h. The primed seed were stored at 4, 20 or 30Â Â°C, respectively, and samples were tested at regular intervals (1, 3, 6 and 9Â months). Results indicated that the germination attributes (germination percentage, germination rate and seedling vigor index) of primed Chinese cabbage seeds stored at 30Â Â°C for 9Â months significantly decreased compared with un-stored primed seeds, even worse than non-primed seeds. However, such negative effects were not observed in primed seeds stored at 4Â°Cand 20Â Â°C for 9Â months and 30Â Â°C for 6Â months. The diminished beneficial effects of hydropriming can be attributed to decreased activities of peroxidase (POD) and catalase (CAT), soluble sugar and soluble protein content, with increased malondialdehyde (MDA) in primed Chinese cabbage seeds.
Journal: South African Journal of Botany - Volume 111, July 2017, Pages 313-315