This study aims to evaluate the efficiency of the co-inoculation of arbuscular mycorrhizal fungi (AMF) and mycorrhizal helper bacteria (MHB) to promote the growth of siamese rosewood and burma padauk seedlings. The experiment was carried out in the pot experiment for 120 days. Three different species of AMF, Glomus clarum KKU−CLD−1, Clomus proliferum PC2−2 and Acaulospora mellea KKU−NBP−NB−2, were individually inoculated with and without the Stenotrophomonas maltophilia KKU−CLD−4.3−3−1. The results showed that the mycorrhizal helper bacteria strain S. maltophilia KKU−CLD−4.3−3−1 isolated from C. proliferum PC2−2 possessed high plant-growth promoting properties. The co-inoculation of our AMF species and MHB, especially in the treatment of C. proliferum PC2−2 and S. maltophilia KKU−CLD−4.3−3−1 could provide higher plant biomass, more nitrogen and phosphorus uptake and higher chlorophyll A, B contents compared to the non-inoculated control. The maximum growth of both types of seedlings was promoted by the treatment consisting of A. mellea KKU−NBP−SB−2, S. maltophilia KKU−CLD−4.3−3−1, and rock phosphate fertilizer. Co-inoculation of AMF and MHB could better promote plant growth parameters and improved phosphorus and nitrogen uptake in both types of seedlings than in the treatment with single inoculation. These suggested that our AMF and MHB were capable of being used as biofertilizer for the growth of Siamese rosewood and Burma padauk seedlings.

这项研究旨在评估丛枝菌根真菌（AMF）和菌根辅助细菌（MHB）共同接种以促进暹罗花梨木和缅甸红木幼苗生长的效率。该实验在盆栽实验中进行了120天。AMF的三种不同的物种，明球囊霉KKU-CLD - 1，Clomus proliferum PC2 - 2和Acaulospora环菌KKU - NBP - NB - 2，分别用和没有接种嗜麦芽窄食KKU - CLD - 4.3 - 3 -1.结果表明，菌根辅助细菌菌株S.麦芽KKU - CLD - 4.3 - 3 - 1分离自C. proliferum PC2 - 2具有较高的促进植物生长的性能。我们的AMF物种和的共接种MHB，特别是在治疗C. proliferum PC2 - 2和S.麦芽KKU - CLD - 4.3 - 3 -与未接种对照相比，图1可以提供更高的植物生物量，更多的氮和磷吸收量以及更高的叶绿素A，B含量。这两种类型的幼苗的最大增长是由以下组成的处理促进蜜环菌KKU - NBP - SB - 2，S.麦芽KKU - CLD - 4.3 - 3 -1，磷矿石和磷肥。与单次接种相比，AMF和MHB共同接种可以更好地促进植物生长参数并提高两种类型幼苗的磷和氮吸收量。这些表明我们的AMF和MHB可以用作连体红木和缅甸红木幼苗生长的生物肥料。