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Potassium silicate and mycorrhizal fungi effect on morphological traits of Matthiola incana under drought stress
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Alireza Sharifian   , Abbas Mirzakhani * , Shahab Khaghani , Fazel Fazeli kakhki |
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Abstract: (454 Views) |
The effects of foliar application of potassium silicate and inoculation with mycorrhiza on alleviating the effects of drought stress on Matthiola incana plants were explored in a split-split-plot experiment based on a completely randomized design with three replications in Perndis Greenhouse Complex during 2019-2020. The main plot was assigned to drought stress at three levels (25%, 50%, and 70% FC), and the sub-plot was assigned to inoculation with arbuscular mycorrhizal fungi (AMF) at two levels (0 and 200 g of fungi per pot), and the sub-sub-plot was assigned to potassium silicate (PS) at three levels (0, 200, and 400 ppm). The results showed that at moderate drought stress (50% FC), stem dry weight was increased by about 20% compared to the control. The maximum root length (13.9 cm), which was about 53% higher than that of the control, was recorded in AMF-inoculated plants exposed to moderate drought stress and sprayed with 400 ppm SP. The results also showed that the foliar application of 400 ppm PS in the absence of AMF inoculation was related to 46% higher leaf dry weight than the treatments of 0 ppm SP with no AMF inoculation. The highest number of flowers in all drought stress levels was obtained from the application of the higher levels of PS. The maximum root dry weight was observed in AMF-inoculated plants exposed to moderate drought stress and treated with 400 ppm SP. Proline content was reduced by the application of 200 g of AMF and 400 ppm of PS at moderate and severe (25% FC) drought stress levels. In general, at moderate and severe drought stress levels, some vegetative and reproductive traits were improved by the foliar application of 400 ppm PS and AMF inoculation. |
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| Keywords: Flower number, Leaf number, Proline, Stem dry weight |
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Full-Text [PDF 510 kb]
(63 Downloads)
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Type of Study: Research |
Subject:
Special
Received: 2022/09/29 | Accepted: 2023/03/5 | Published: 2024/02/25
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