邢红爽;张一丹;邢丽君;李伟;师长海;郭绍霞;

• 1:青岛农业大学菌根生物技术研究所园林与林学院

摘要(Abstract)：

于温室盆栽不同光照条件(遮光率分别为0%、24%、48%、72%、96%)下,对孔雀草Tagetes patula进行接种丛枝菌根(arbuscular mycorrhiza,AM)真菌幼套近明球囊霉Claroideoglomus etunicatum、摩西斗管囊霉Funneliformis mosseae、球状巨孢嚢霉Gigaspora margarita和不接种对照处理,测定孔雀草菌根侵染率、生长指标和生理指标,旨在评价AM真菌对孔雀草耐阴性的影响。结果表明,供试AM真菌均能侵染孔雀草根系形成典型的丛枝菌根,不同遮光处理均以接种F. mosseae的侵染效果最佳,强光及弱光均不利于AM真菌侵染,当遮光率为24%时,孔雀草生长状况最佳。与不接种对照相比,接种F. mosseae显著提高了孔雀草株高、茎粗、叶面积、根冠比、比叶重、着花数和花茎,单花花期延长,提高了根系活力、叶绿素a、叶绿素b、总叶绿素和可溶性糖含量,降低了脯氨酸含量,光补偿点下降,光饱和点升高,最大净光合速率增大。结果表明,适当遮荫有利于孔雀草生长发育,接种AM真菌能增强孔雀草对光照的适应能力,促进植株生长发育,减缓弱光造成的损伤,增强其耐阴性,且以接种F. mosseae效果最好。

关键词(KeyWords)： 孔雀草;丛枝菌根真菌;光照;生长;生理

Abstract:

Keywords:

基金项目(Foundation): 山东省林业科技创新项目(LYCX-2018-34)~~

作者(Authors): 邢红爽;张一丹;邢丽君;李伟;师长海;郭绍霞;

DOI: 10.13346/j.mycosystema.190443

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