采前BTH处理对芒果果实抗病性的诱导  

Induced Disease-resistance in Mango Fruit by Pretharvest Benzothiadiazole (BTH) Spraying

作　　者：弓德强[1,2,3] 谷会[1,3] 张鲁斌[1,3] 洪克前[1,3] 朱世江[2] 

机构地区：[1]中国热带农业科学院南亚热带作物研究所,广东湛江524091 [2]华南农业大学园艺学院,广东广州510642 [3]海南省热带园艺产品采后生理与保鲜重点实验室,广东湛江524091

出　　处：《热带作物学报》2012年第7期1250-1255,共6页Chinese Journal of Tropical Crops

基　　金：海南省自然科学基金项目(No.310100);中央级公益性科研院所基本科研业务费专项资金(中国热带农业科学院南亚热带作物研究所)资助项目(No.1251022012001);"十一五"科技部支撑项目重点项目(No.2006BAD22B06)

摘　　要：以‘台农1号’芒果为试材,研究采前分别用1、50和100 mg/L苯并噻重氮（BTH）喷施处理对芒果果实抗病性诱导效果的影响。结果表明,与对照果实相比,100 mg/L BTH处理果实采收时的病果率、采后未接种果实的病情指数和接种果实的病斑直径显著降低,降低幅度分别为52.60%、54.30%和7.06%;并且在贮藏过程中,BTH处理果实中的苯丙氨酸解氨酶（PAL）、过氧化物酶（POD）和β-1,3-葡聚糖酶（GLU）的活性明显高于对照;另外,在贮藏前期（0~6 d）,BTH处理能够抑制芒果过氧化氢酶（CAT）的活性,提高芒果过氧化氢（H2O2）的含量。The effects of pretharvest spraying with 1 mg/L, 50 mg/L, 100 mg/L benzothiadiazole （BTH） on the disease resistance induction of mango （Mangifera indica L. cv. Tainong No.l） fruits were investigated. The results indicated that, on the fruits treated with 100 mg/L BTH, the disease incidence of mango fruits at harvest, the disease index of non-inoculated mango fruits and the lesion diameter of mango fruits inoculated with C. gloeosporioides after harvest was 52.60%, 54.30% and 7.06% lower than that on the controlled fruits, respectively. Meanwhile, the activities of defense enzymes, including phenylalanine ammonia-lyase （PAL）, peroxidase （POD） and 13-1,3-glucanase （GLU） in the fruits were all enhanced by the BTH treatment during storage. In addition, the catalase （CAT） activity in the fruit was inhibited, whereas the level of hydrogen peroxide （H202） was increased by the BTH treatment during 0 to 6 days after storage.

关 键 词：芒果 苯并噻重氮(BTH) 防御酶 炭疽病 抗病性 

分 类 号：S667.1[农业科学—果树学]