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Title of Journal: Biol Plant

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Abbravation: Biologia Plantarum

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Springer Netherlands

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DOI

10.1007/s00284-013-0320-y

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ISSN

1573-8264

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Root characteristics of grafted peppers and their

Authors: X Duan H G Bi T Li G X Wu Q M Li X Z Ai
Publish Date: 2016/11/18
Volume: 61, Issue: 3, Pages: 579-586
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Abstract

Root rot caused by Fusarium solani is one of the most severe diseases in pepper Capsicum annuum L Grafting has been attempted as an effective means to control the disease but little is known about the disease resistance mechanism in grafted pepper Therefore we investigated the changes of biomass cell structure and the secondary metabolism in roots of control nongrafted pepper and grafted peppers using cvs Weishi and Buyeding as rootstocks and the cv Xinfeng 2 as a scion After a manual inoculation less F solani invaded grafted pepper roots and consequently less serious injury to the root cell ultrastructure compared with the control was found The roots of grafted pepper infected with F solani exhibited greater biomass production and root activity than the roots of infected controls Grafting led to an increased content of salicylic acid benzoic acid vanillin lignin and polyamines as well as activities of phenylalanine ammonia lyase polyphenoloxidase and peroxidase These results suggest that grafting improved the resistance of peppers to root rot

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