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Asian Journal of Plant Sciences
  Year: 2004 | Volume: 3 | Issue: 4 | Page No.: 398-402
DOI: 10.3923/ajps.2004.398.402
 
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Changes in Activities of Sucrose Synthase and Sucrose Phosphate Synthase and Sugar Content During Postharvest Senescence in Two Broccoli Cultivars

Bimal Kumar Pramanik, Toshiyuki Matsui , Haruo Suzuki and Yusuke Kosugi

Abstract:
Changes in sucrose synthase (SS) and sucrose phosphate synthase (SPS) activities and sugar content during postharvest senescence in broccoli (Brassica oleracea L. cvs. `Hartland` and `Sairin`) were studied. The first change in color became apparent between 2 and 3 d but whole head yellowed after 5 d of storage. The SS activity increased gradually in all portions although with few fluctuations in branchlets of both cultivars at the end of the storage time. In case of SPS, there was no inclining or declining pattern of the activity in any portion of the two cultivars at the end of the storage period. In both cultivars, branchlets showed higher SS and SPS activity than florets. Sucrose content gradually decreased in both portions of the two cultivars with time. Fructose content was higher than glucose and sucrose in the florets as well as branchlets of both cultivars. There was a highly significant negative correlation observed between the SS activity and sucrose content in the florets and branchlets of both cultivars. There was no significant correlation between sugar contents and SPS activity in any portions of both cultivars.
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How to cite this article:

Bimal Kumar Pramanik, Toshiyuki Matsui , Haruo Suzuki and Yusuke Kosugi , 2004. Changes in Activities of Sucrose Synthase and Sucrose Phosphate Synthase and Sugar Content During Postharvest Senescence in Two Broccoli Cultivars. Asian Journal of Plant Sciences, 3: 398-402.

DOI: 10.3923/ajps.2004.398.402

URL: https://scialert.net/abstract/?doi=ajps.2004.398.402

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