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Effects of Extracts from Four Plant Species on Resistance of Grapevine to Downy Mildew(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2012年03期
Page:
130-133
Research Field:
Publishing date:

Info

Title:
Effects of Extracts from Four Plant Species on Resistance of Grapevine to Downy Mildew
Author(s):
GUO Xiu-ping; CHE Yong-mei; HOU Li-xia; ZHAO Fang-gui; LIU Xin
College of Life Science,Qingdao Agricultural University，Key Lab of Plant Biotechnology in Universities of Shandong，Qingdao,Shandong 266109
Keywords:
grapevine; downy mildew; leaf extracts; polyphenol oxidase; β-1; 3-glucanase
PACS:
S 436.631.1+9
DOI:
-
Abstract:
Using two grape cultivars ‘Zuoyouhong’and ‘Fredonia’ that resistant to Plasmopara viticola as well as Potentilla and Ficus carica immune to Plasmopara viticola as materials，the effects of leaf extracts of acetone or ethanol on resistance of grape cultivar ‘Chardonnay’ to Plasmopara viticola and activities of polyphenol oxidase (PPO) and β-1,3-glucanase (Glu) were studied.The results showed that all extracts from ‘Zuoyouhong’，‘Fredonia’，Potentilla and Ficus carica extracted with different dissolvent decreased the infection rate of Plasmopara viticola on Chardonnay respectively，and 100-fold dilution were the best，the effects of extracts by the strength were as follows Potentilla leaves extracts of 70% ethanol (extraction process A)> ‘Fredonia’ leaves extracts 50% acetone > ‘Zuoyouhong’ leaves extracts of 70% ethanol (extraction process B)，but effect of extracts from Ficus carica was the weakest.Extracts form different plants increased PPO and Glu activity of leaves from Chardonnay infected with Plasmopara viticola variously.

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Last Update: 2014-08-26