AM真菌和根结线虫互作对黄瓜生长及生理特征的影响  被引量:12

The effects of interaction between fungus Arbuscular mycorrhiza and root-knot nematode Meloidogyne incognita on the growth and physiological characteristics of cucumber

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作  者:陈书霞[1] 姜永华[1] 刘宏久[1] 程智慧[1] 

机构地区:[1]西北农林科技大学园艺学院/农业部西北地区园艺作物生物学与种质创制重点实验室,陕西杨凌712100

出  处:《植物保护学报》2012年第3期253-259,共7页Journal of Plant Protection

基  金:国家自然科学基金(31071813);陕西省农业科技攻关项目(2009K0118);西安市科技局项目(NC08017)

摘  要:通过盆栽试验研究了丛枝菌根真菌Arbuscular mycorrhiza(AM)和南方根结线虫Meloidogyneincognita互作对黄瓜幼苗生长及生理特征的影响。结果表明,预先接种地表球囊霉Glomus versi-forme再接种线虫处理的鲜、干重较只接种线虫的处理显著增加;预先接种AM真菌再接种线虫处理的根结线虫病情指数、AM真菌侵染率较只接种线虫的处理明显降低;接种线虫使黄瓜植株的过氧化物酶(POD)、过氧化氢酶(CAT)及苯丙氨酸解氨酶(PAL)、总酚含量有不同程度提高,其中预先接种根内球囊霉G.intraradices对黄瓜植株起到了较好的保护作用;与对照相比,只接种线虫处理的叶片磷含量降低了25.26%,预先接种AM真菌再接种线虫处理的叶片磷含量较只接种根结线虫的含量高。A pot experiment was conducted to study the effects of interaction between fungus Arbuscular mycorrhiza (AM) and root-knot nematode Meloidogyne incognita on the growth and physiological charac- teristics of cucumber. It showed that the fresh and dry weight increased significantly in the treatment of pre-inoculating AM fungi and then inoculating root-knot nematode compared with the treatment of inocula- ting root-knot nematode only. The disease index of root-knot nematode and the infection rate of AM fungi decreased obviously in the treatment of pre-inoculating Glomus versiforme and then inoculating root-knot nematode compared with that of inoculating root-knot nematode only. The content of peroxidase (POD), catalase (CAT), phenylalanine ammonia-lyase (PAL) and total phenol enhanced in different degrees in the treatment of inoculating root-knot nematodes only, and the cucumber seedlings were protected by pre- inoculating G. intraradices. The phosphorus content of leaves decreased by 25.26% in the treatment of inoculating root-knot nematode only compared with CK, and the phosphorus contents of leaves increased in the treatments of pre-inoculating AM fungi and then root-knot nematode compared with inoculating root-knot nematode only.

关 键 词:黄瓜 AM真菌 根结线虫 生长 生理特征 

分 类 号:S436.421[农业科学—农业昆虫与害虫防治]

 

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