Effects of drought stress and bio-fertilizers on some growth, photosynthetic pigments, morphophysiological and biochemical traits of Calendula officinalis

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Saheb Hasan Mahdi; SELAHVARZI YAHYA; NABATI JAFAR; AZIZI MAJID

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Journal: JOURNAL OF PLANT PROCESS AND FUNCTION Year:2020 | Volume:9 | Issue:36 Page(s): 135-151

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Title

Effects of drought stress and bio-fertilizers on some growth, photosynthetic pigments, morphophysiological and biochemical traits of Calendula officinalis

Author(s)

Saheb Hasan Mahdi | SELAHVARZI YAHYA | NABATI JAFAR | AZIZI MAJID | Issue Writer Certificate

Keywords

CarbohydratesQ2

Flower diameterQ1

ProlineQ1

PhenolQ1

Total chlorophyllQ2

Abstract

The use of plant symbiosis with mycorrhizal fungi and growth promoting bacteria is one of the ways to reduce drought stress that has recently been used in agriculture. A factorial experiment based on a completely randomized design with four replications was designed and conducted in winter and spring of 1396-1397 in research greenhouse of the Faculty of Agriculture, Ferdowsi University of Mashhad. Experimental treatments consisted of 2 levels of water regimes (100 and 50% Field Capacity as normal and drought stress conditions, respectively) and 8 levels of bio fertilizer (Pseudomonas fluorescens (Ps), Azotobactore chroococcum (Az), mycorrhiza fungi (M), Ps with M, Az with M, Ps with AZ, AZ in combination with Ps and M and the control (no bacteria and fungi). The results showed that drought stress in Calendula led to decrease in plant growth, leaf area, flower number, Flower diameter, shoot and root dry weight, petal dry weight and stomata conduction significantly compared to the control treatment (100% FC), and also the amount of Proline, total carbohydrate and chlorophyll content of the plant increased in drought stress. Application of growth stimulating bacteria in most traits led to improved traits measured in plant under stress and non-stress conditions. The highest leaf area was obtained by application of Azotobactore chroococcum (286. 88 mm 2 ). The highest flower dry weight was in Pseudomonas fluorescence treatment (4. 22 g) under non-stress and after that without significant difference; in combination of mycorrhizal fungus and Pseudomonas fluorescence at non-stress (3. 18 g) was recorded. As a result, the application of Pseudomonas fluorescence in soil alone or in combination with mycorrhizal fungi under drought stress conditions had the ability to improve plant growth and leading to increased plant efficiency under drought stress conditions.

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APA: Copy

Saheb Hasan, Mahdi, SELAHVARZI, YAHYA, NABATI, JAFAR, & AZIZI, MAJID. (2020). Effects of drought stress and bio-fertilizers on some growth, photosynthetic pigments, morphophysiological and biochemical traits of Calendula officinalis. JOURNAL OF PLANT PROCESS AND FUNCTION, 9(36 ), 135-151. SID. https://sid.ir/paper/372547/en

Vancouver: Copy

Saheb Hasan Mahdi, SELAHVARZI YAHYA, NABATI JAFAR, AZIZI MAJID. Effects of drought stress and bio-fertilizers on some growth, photosynthetic pigments, morphophysiological and biochemical traits of Calendula officinalis. JOURNAL OF PLANT PROCESS AND FUNCTION[Internet]. 2020;9(36 ):135-151. Available from: https://sid.ir/paper/372547/en

IEEE: Copy

Mahdi Saheb Hasan, YAHYA SELAHVARZI, JAFAR NABATI, and MAJID AZIZI, “Effects of drought stress and bio-fertilizers on some growth, photosynthetic pigments, morphophysiological and biochemical traits of Calendula officinalis,” JOURNAL OF PLANT PROCESS AND FUNCTION, vol. 9, no. 36 , pp. 135–151, 2020, [Online]. Available: https://sid.ir/paper/372547/en

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