The Effect of Polyphenol Content and Polyphenol Oxidase Activity on in VitroRooting of Pingy in Rose Cultivars

ACTA HORTICULTURAE SINICA ›› 2007, Vol. 34 ›› Issue (3): 695-698.

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The Effect of Polyphenol Content and Polyphenol Oxidase Activity on in VitroRooting of Pingy in Rose Cultivars

LU Xu-juan¹;FENG Zhen¹;ZHAO Lan-yong^1*;FENG Li-guo²;YU Shou-chao³

( ¹College of Forestry, Shandong Agricultural University, Taipan, Shandong 271018, China; ²College of Horticulture, Shan-dong Agricultural University, Taipan, Shandong 271018, China; ³College of Agriculture, L iaocheng University, Liaocheng,Shandong 252059, China)

Received:1900-01-01 Revised:1900-01-01 Online:2007-06-25 Published:2007-06-25

Abstract

Abstract: Polyphenol content, polyphenol oxidase ( PPO) activity and in vitro rooting ability of 5 Pingy
in rose (Rosa rugosa Thunb. ) cultivarswere investigated to seek for the physiologicalmechanism of rooting.
The results showed that polyphenol content, polyphenol oxidase activity and rooting index of different cultivars
were different significantly. According to analysis of correlation, polyphenol content, polyphenol oxidase activ
ity was correlated negatively to rooting index at P < 0.05 and P < 0.01, respectively. Polyphenol oxidase ac
tivity and rooting index of R1 rugosa Purp le B ranch at different pH conditions were also studied. The results
showed that both polyphenol oxidase activity and rooting index had significant correlation with pH, and the op
timal pH of PPO was 6.5, while the op timal pH of in vitro rooting was 5.5.

Key words: Rosa rugosa, Pingyin rose, Polyphenol, Polyphenol oxidase, Rooting

LU Xu-juan;FENG Zhen;ZHAO Lan-yong;FENG Li-guo;YU Shou-chao. The Effect of Polyphenol Content and Polyphenol Oxidase Activity on in VitroRooting of Pingy in Rose Cultivars[J]. ACTA HORTICULTURAE SINICA, 2007, 34(3): 695-698.

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The Effect of Polyphenol Content and Polyphenol Oxidase Activity on in VitroRooting of Pingy in Rose Cultivars

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