List of Articles Indole Acetic Acid

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  1 - The Role of Spike Photosynthesis and Foliar Application of IAA on Grain Yield and its Components of Two Wheat Cultivars in Late Season Drought Stress
  M. Abdoli M. Saeidi
  Drought stress is a major cause of reduction in crop production. According to the role of various plant parts, especially the spike photosynthesis in grain filling and the regulatory roles of IAA in formation of grain yield, a split plot-factorial experiment based on ra More

  Drought stress is a major cause of reduction in crop production. According to the role of various plant parts, especially the spike photosynthesis in grain filling and the regulatory roles of IAA in formation of grain yield, a split plot-factorial experiment based on randomized complete block design (RCBD) with three replications was conducted at the experimental field of the Campus of Agriculture and Natural Resources, University of Razi, Kermanshah, in 2010-2011 growing season using two wheat cultivars (Marvdasht and Pishtaz). Results indicated that water stress after pollination significantly decreased grain yield and 1000 grain weight but it did not affect grain no. spike-1, number of fertile and infertile spikelet per spike and spike length as compared well-watered conditions. Drought stress caused 25.7 and 22.6 percent reduction in grain yield and 1000 grain weight of varieties under study respectively. Cultivars differed in grain no. spike-1, 1000 grain weight, number of fertile and infertile spikelet per spike and spike length significantly. Water stress also reduced grain yield of Marvdasht cultivar (31.8%) as compared to Pishtaz cultivar (18.7%). Pishtaz cultivar possessed larger spikes which resulted in grain yield increase under drought stress. Photosynthesis of spike during grain filling stage increased yield under well watered condition by 42.5% and under post-anthesis drought stress by 23.8%, respectivly. Foliar application of IAA did not have any effect on yield reduction when photosynthesis was stopped. This shows the importance of spike photosynthesis in increasing grain yield. Manuscript profile
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  2 - Evaluation of the effects of exogenous auxin and cytokinin hormones on growth, morphology, photosynthetic pigment content and the possibility of creating favorable responses in the ornamental plant Adenium obesum
  Aryan Sateei Masomeh Habibi Mehdi Ebadi Shadman Shikravi Mazeyar Ahmadi golsefidi
  10.30495/iper.2022.1941175.1735
  This study evaluates the effects of foliar application of auxins and cytokinins hormones on growth and photosynthetic pigment content in Adenium obsum. Experiments were performed in a completely randomized blocks with 8 treatments and a control group, 4 replications, an More

  This study evaluates the effects of foliar application of auxins and cytokinins hormones on growth and photosynthetic pigment content in Adenium obsum. Experiments were performed in a completely randomized blocks with 8 treatments and a control group, 4 replications, and 8 stages of hormone application. Two types of auxin, IAA and IBA, 200 mg / l and of cytokinin, BAP and KIN, 400 mg / lit were used independently and in combination. The evaluated traits included leaf area, number of lateral buds and flowers, shoots and roots fresh and dry weight, chlorophyll a and b and carotenoids content. Different treatments containing BAP as well as KIN and IAA + KIN increased leaf area. Highest increase was related to IAA + BAP. The application of hormonal treatments did not have a significant effect on shoot length, except for IBA and IBA + BAP treatments but other treatments increased root length. IBA + BAP and especially IAA + BAP treatment caused a significant increase in the number of lateral buds. Stem fresh weight also increased significantly in IBA + BAP, IAA + BAP and IAA treatments, but stem dry weight increased only in IAA + BAP. The treatments had no effect on root fresh weight but its dry weight increased in all treatments except IAA and IBA + KIN.The highest number of flowers was obtained without significant difference with the control in IBA + KIN treatment. Independent or combined BAP treatments reduced the number of flowers. The content of chlorophylls a and b increased under IAA + BAP and KIN-treated treatments. IBA + BAP also increased chlorophyll b content. Carotenoid content was not affected by treatments. Morphologically, IAA + BAP clearly affected the shape of the leaves, the appearance of the veins and the general shape of the plant. Manuscript profile
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  3 - Change in the content of bioactive pharmaceutical-industrial compounds under the influence of hormonal treatments In Euphorbia trigona Mill.
  Hakimeh Rezayi Aryan Sateei Tahereh A. Aghajanzadeh Mehdi Ebadi
  10.30495/ijpp.2022.699182
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