枳实生苗抗旱丛枝菌根真菌菌种比较的研究

Comparision of Arbuscular Mycorrhizal Fungi for Drought Resistance of Trifoliate Orange (Poncirus trifoliata L. Raf.) Seedlings

盆栽条件下研究丛枝菌根真菌Glomus versiforme、G.mosseae、G.geosporum、G.diaphanum和G.etunicatum对正常水分和水分胁迫下的枳实生苗水分代谢的影响。结果表明,在正常水分和水分胁迫下接种丛枝菌根真菌都明显增加植株的生长,提高叶片可溶性糖、可溶性淀粉、可溶性蛋白质以及根系可溶性糖的含量。叶片超氧化物歧化酶、过氧化氢酶和过氧化物酶活性增强,从而提高了植株的抗旱性。正常水分下以接种G.versiforme的效果最好,水分胁迫下以接种G.mosseae的效果最好。

The effect of Glomus versiforme , G. mosseae , G. geosporum, G. diaphanum and G. etunicatum on water relations of trifoliate orange （ Poncirus trifoliata L. Raf. ） seedlings was studied in potted culture under well-watered and water stress conditions. Arbuscular mycorrhizal inoculations increased the plant biomass and biological morphological characteristics under well-watered and water stress conditions. Soluble sugar in leaves and roots, soluble starch in leaves, and soluble protein in leaves were enhanced by arbuscular mycorrhizal inoculations under two water regimes conditions. Moreover, mycorrhizal seedlings had higher superoxide dismutase, peroxidase and catalase activities in leaves. Thus, the drought resistance of mycorrhizal seedlings was enhanced. Inoculation with G. versiforme showed the greatest effects under well-watered conditions and inoculated with G. mosseae the greatest effects under water stress conditions.