Studies on the Senescence Process and Membrane-lipid Peroxidation of Cut Peony Flowers During the Vase-holding

ACTA HORTICULTURAE SINICA ›› 2007, Vol. 34 ›› Issue (6): 1491-1496.

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Studies on the Senescence Process and Membrane-lipid Peroxidation of Cut Peony Flowers During the Vase-holding

LI Xia¹, ZHANG Yu-gang², ZHENG Guo-sheng³, LI Rui-mei¹, and GUO Shao-xia^1*

⁽¹College of Landscape Architecture, Qingdao, Shandong 266109, China; ²College of Horticulture, Qingdao, Shandong 266109, China; ³College of Life Science, Qingdao Agricultural University, Qingdao, Shandong 266109, China)

Received:2007-06-21 Revised:2007-09-24 Online:2007-12-25 Published:2007-12-25

Abstract

Abstract: This paper studied the senescence process and the relationship of the membrane-lipid peroxidation with the vase life of cut peony flowers. Six cultivars, including 'Chunxiao', 'Shanhehong', 'Qihua Zhenglu', 'Zifeng Chaoyang', 'Linghua Chenyu' and 'Lanhai Bibo' were investigated through observing the changes of morphologic characteristics and determining the indexes of membrane permeability, MDA content, superoxide anion accumulation rate, SOD activity, CAT activity. The results showed that 'Chunxiao', 'Qihua Zhenglu' and 'Linghua Chenyu' exhibited 3 days' full opening period and could be in full blooming with 8 or 7 days' vase life. 'Shanhehong', 'Zifeng Chaoyang' and 'Lanhai Bibo' exhibited 2 days' full opening period and 6 days' vase life. During the vase-holding, the membrane permeability, MDA contents, superoxide anion accumulation rate increased, and the increasing of them was positive to each other. The SOD and CAT activities increased at first and then declined. The damage of cell membrane because of the membrane-lipid peroxidation might be the causal factor of cut peony flowers senescence.

Key words: Peony, Cut flower, Vase life, Senescence, Membrane-lipid peroxidation

CLC Number:

S 682.1⁺2

LI Xia;ZHANG Yu-gang;ZHENG Guo-sheng;LI Rui-mei;and GUO Shao-xia. Studies on the Senescence Process and Membrane-lipid Peroxidation of Cut Peony Flowers During the Vase-holding [J]. ACTA HORTICULTURAE SINICA, 2007, 34(6): 1491-1496.

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Studies on the Senescence Process and Membrane-lipid Peroxidation of Cut Peony Flowers During the Vase-holding

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