Abstract

The aim of the study was to study the effect of bacteria that stimulate plant growth and humic substances on the content of chlorophyll, nitrogen balance index, cytokinin concentration, and abscisic acid in wheat plants grown in drought conditions. The accumulation of the raw mass of wheat plants during treatment with a strain of Pseudomonas plecoglossicida 2,4-D bacteria and humic substances with a deficiency of soil moisture is shown. Stimulation of plant growth is associated with the activation of root growth, which led to an increase in the nitrogen balance index and chlorophyll concentration in the treated plants. The detected increase in the concentration of chlorophyll in plants treated with P. plecoglossicida 2,4-D correlated with a decrease in the content of abscisic acid in shoots, and that in plants treated with humates correlated with an increase in cytokinins in shoots. A higher efficiency of plant treatment with a combination of bacteria and humic substances than any of them individually may be associated with the additive effect of these treatments on hormonal balance.

中文翻译：

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PGPB菌株Plecoglossicida 2,4-D与腐殖质联合对干旱条件下小麦生长及光合色素和植物激素含量的影响

摘要

该研究的目的是研究刺激植物生长的细菌和腐殖质对干旱条件下生长的小麦植株叶绿素含量、氮平衡指数、细胞分裂素浓度和脱落酸的影响。显示了在土壤水分不足的情况下，用Pseudomonas plecoglossicida 2,4-D 细菌菌株和腐殖质处理时，小麦植株原始物质的积累情况。植物生长的刺激与根系生长的激活有关，从而导致处理过的植物中氮平衡指数和叶绿素浓度的增加。在用P. plecoglossicida 2,4-D处理的植物中检测到的叶绿素浓度的增加与芽中脱落酸含量的降低相关，而在用腐殖酸盐处理的植物中检测到的叶绿素浓度与芽中细胞分裂素的增加相关。使用细菌和腐殖质组合进行植物处理比单独使用任何一种植物的效率更高，这可能与这些处理对荷尔蒙平衡的累加效应有关。