壳聚糖等生防制剂对香蕉尖孢镰刀菌和植株生长的影响  

Effects of chitosan and other bio-control agents on Fusarium oxysporum f. sp. cubense and plant growth in banana

作　　者：张荣萍[1,2] 颜彩燕 张磊[1,2] 杨毅敏[1,2] 樊俊华[1,2] 陈萍[1,3] 

机构地区：[1]海南大学热带作物种质资源保护与开发利用教育部重点实验室,海南海口570228 [2]海南大学农学院,海南海口570228 [3]海南大学园艺园林学院,海南海口570228

出　　处：《广东农业科学》2015年第9期68-72,I0001,共6页Guangdong Agricultural Sciences

基　　金：海南省自然科学基金(20153061);海南大学中西部计划学科建设项目(ZXBJH-XK008)

摘　　要：为了探索壳聚糖、碧护和酵素菌有机肥对香蕉尖孢镰刀菌和植株生长的影响规律,采用正交L8(27)盆栽法研究壳聚糖、碧护、酵素菌等3种生防制剂对不同抗性的香蕉组培苗诱导其抗尖孢镰刀菌的效果及对植株生长和基质氮含量的影响。结果表明:(1)碧护制剂可显著抑制尖孢镰刀菌,显著促进香蕉植株株高和茎粗的生长,显著提高栽培基质的碱解氮的含量。(2)酵素菌对香蕉尖孢镰刀菌、植株生长、基质氮含量的影响较小,壳聚糖对"巴西"的诱导抗性大于"农科一号",综合影响最小。(3)壳聚糖与酵素菌的交互效应显著,二者协同施用对香蕉抗尖孢镰刀菌、植株生长、碱解氮含量均有较大影响,而壳聚糖与碧护间的交互效应很小。(4)香蕉枯萎病病情与栽培基质的碱解氮含量间显著负相关,与植株茎粗和株高间不相关。本研究初步得出,壳聚糖、碧护和壳聚糖复合酵素菌措施可提高香蕉对尖孢镰刀菌的抗性,它们对抗病性的提高与提高栽培基质的碱解氮含量紧密相关,而与茎粗和株高不相关。The experiment was conducted to study the induced resistance to Fusarium oxysporum f. sp. cubense by bio-eontrol agents including chitosan, VitaCat, enzyme bacteria, and investigate plant growth and nitrogen content of banana, with two different varieties of banana seedling in disease resistance as materials, by the design of Ls （27） and pot culture. The results showed that VitaCat could significantly inhibit F. oxysporum f. sp. cubense, promote stem growing in height and diameter, increase nitrogen content of cultivation media significantly. Enzyme bacteria didn＇t affect these features significantly. Chitosan had different effects on different banana variety, its effect on Baxi was higher than that on Nongke Nol., and its comprehensive effect was the minimum. The interaction effect of chitosan and enzyme bacteria was significant, and the collaborative effect had great influence on banana resistance to F. oxysporum f. sp. cubense, plant growth and nitrogen content But ehitosan had no interaction effect with VitaCat. Banana wilt disease had significantly negative correlation with nitrogen content, but no relation with stem diameter and height. The results indicated that, chitosan, VitaCat and chitosan combined with enzyme bacteria could improve the induced resistance to F. oxysporum f. sp. cubense, which was relative to nitrogen content in substrate, not to banana plant height and diameter.

关 键 词：香蕉尖孢镰刀菌 壳聚糖 碧护 酵素菌 诱导抗性 

分 类 号：S482.292[农业科学—农药学]