نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانش آموخته کارشناسی ارشد، گروه اصلاح نباتات و بیوتکنولوژی، دانشکده کشاورزی، دانشگاه شهرکرد، شهرکرد، ایران.
2 استاد، گروه اصلاح نباتات و بیوتکنولوژی، دانشکده کشاورزی، دانشگاه شهرکرد، شهرکرد، ایران.
3 استادیار، گروه اصلاح نباتات و بیوتکنولوژی، دانشکده کشاورزی، دانشگاه شهرکرد، شهرکرد، ایران.
چکیده
کلیدواژه‌ها
عنوان مقاله [English]
نویسندگان [English]
Abstract
Objective
Thyme is an important medicinal and spice plant that has played a significant role in nutrition as a spice and in controlling infections and inflammations, thereby improving human health and quality of life over different centuries. Arbuscular mycorrhizal fungi, in symbiosis with plants, enhance nutrient uptake and mitigate the adverse effects of drought and salinity stress. This study investigated the effect of arbuscular mycorrhizal fungi under drought and non-stress conditions on some morphological traits of three thyme species.
Materials and Methods
In this study, a factorial experiment with three replications was conducted to investigate the effect of drought stress at two levels (90 and 50% of field capacity) and the applications of arbuscular mycorrhizal fungi at two levels (with or without fungi) on some morphological traits of nine ecotypes belonging to three species thyme species: Thymus vulgaris, T. pulegiodes and T. serpyllum. The study was carried out under greenhouse conditions. The investigated traits included morphological traits such as plant height, leaf length, leaf area, number of leaves, and plant fresh weight.
Results
The results of the analysis of variance showed that except for the interaction effect of stress and mycorrhizal fungi on plant height and the effect of mycorrhizal fungi on leaf length and plant fresh weight, the main factors, including ecotype, drought stress, and the application of mycorrhizal fungi as well as the two-way and three-way interaction effects of these factors on the investigated traits were very highly significant. Although the intensity of changes among ecotypes varied under the influence of drought stress and fungi, drought stress generally caused a reduction in most traits, including plant height, leaf length, leaf area, and plant fresh weight. Conversely, the application of mycorrhizal fungi increased the values of these traits to varying degrees in most ecotypes under both moisture conditions.
Conclusion
Mycorrhizal fungi can mitigate the adverse effects of drought stress and, in some cases, fully compensate for it. Therefore, to enhance the traits of thyme species, it is recommended to apply mycorrhizal fungi under both drought stress and non-stress conditions.
کلیدواژه‌ها [English]
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