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Scientia Silvae Sinicae ›› 2004, Vol. 40 ›› Issue (5): 79-83.doi: 10.11707/j.1001-7488.20040512

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Study on the Physiological Mechanism of Postharvest Senescence in Flower Buds of Rosa rugosa Cultivars in Pingyin County

Sun Shoujia,Zhao Lanyong,Qiu Lanfen,Yu Shouchao,Zhao Rushi   

  1. Department of Ornamental Horticulture and Landscape Architecture, China Agricultural University\ Beijing100094；College of Forestry, Shandong Agricultural University Tai'an271018；Qingdao Vocational and Technical College Qingdao266555；Research Institute of Pingyin Rose Pingyin250400
  • Received:2003-03-07 Revised:1900-01-01 Online:2004-09-25 Published:2004-09-25

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Abstract:

Several important physiological and biochemical factors in the senescence process of flower buds of Rosa rugosa cultivars in Pingyin County were tested. The results indicated that the content of protein and the activity of SOD and CAT showed an early increasing and later decreasing trend. The membrane permeability, MDA content and O-·2 production rate increased as the progress was developing. The time of initial decreasing point of POD activity appeared later than that of other factors. The result of correlation analysis showed that protein was strongly related with factors of membrane permeability, MDA, O-·2,SOD and CAT. The membrane lipid peroxidation and enzyme system detriment were primarily considered to be the major physiological factors in postharvest senescence in flower buds of R.rugosa cultivars in Pingyin County.

Key words: Rosa rugosa cultivars in Pingyin County, Flower buds, Postharvest, Senescence, Physiological mechanism