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Preharvest application of phellodendron bark extracts controls brown rot and maintains quality of peento-shaped peach

文献类型： 外文期刊

作者： Feng, Xiaoyuan 1 ; Wang, Baogang 2 ; Li, Wensheng 2 ; Shi, Lei 2 ; Cao, Jiankang 1 ; Jiang, Weibo 1 ;

作者机构： 1.China Agr Univ, Coll Food Sci & Nutr Engn, Beijing 100094, Peoples R China

2.Beijing Acad Agr & Forestry Sci, Inst Forestry & Pomol, Beijing 100093, Peoples R China

关键词： enzymatic activity;firmness;Monilinia fructicola;Phellodendron Chinese;Prunus persica var. platycarpa

期刊名称：HORTSCIENCE （ 影响因子：1.455； 五年影响因子：1.617 ）

ISSN： 0018-5345

年卷期： 2008 年 43 卷 6 期

页码：

收录情况： SCI

摘要： Preharvest application of Phellodendron bark (Phellodendron chinese Schneid) extract (PBE) on brown rot and postharvest quality of peach [Prunus persica (L.) Batsch var. platycarpa (Decne.) L.H. Bailey] was investigated. PBE at 0.8, 1.6, and 3.2 mg.mL(-1) totally inhibited conidial germination, mycelial growth, and sporulation, respectively, of Monilinia fructicola in vitro. Preharvest PBE treatment at 21.0 mg.mL(-1) at 0, 30, 60, and 90 days after full bloom controlled brown rot caused by M. fructicola on peach fruit after harvest and reduced disease incidence and lesion diameter by 37% and 61%, respectively, than those of the control 96 h after inoculation in in vivo experiments. The results from field experiments were consistent during a 3-year period. Fruit from PBE-treated trees showed higher activities of defense enzymes, including peroxidase, phenylalanine ammonia-lyase, chitinase, and beta-1,3-glucanase, compared with those of the control during storage. PBE also delayed softening and loss of titratable acidity and inhibited flesh browning during storage. Total soluble solid contents were unaffected by treatment. The results indicate that preharvest application of PBE may be an alternative for controlling brown rot of peach fruit.

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