The effect of spraying of methyl jasmonate and Epi-brassinolide on photosynthesis, chlorophyll fluorescence and leaf stomatal traits in black mustard (Brassica nigra L. ) under salinity

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REZAEI HALIMEH; SAEIDI SAR SAKINEH; EBADI MOSTAFA; ABBASPOUR HOSSEIN

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Journal: JOURNAL OF PLANT PROCESS AND FUNCTION Year:2018 | Volume:7 | Issue:25 Page(s): 53-62

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Title

The effect of spraying of methyl jasmonate and Epi-brassinolide on photosynthesis, chlorophyll fluorescence and leaf stomatal traits in black mustard (Brassica nigra L. ) under salinity

Author(s)

REZAEI HALIMEH | SAEIDI SAR SAKINEH | EBADI MOSTAFA | ABBASPOUR HOSSEIN | Issue Writer Certificate

Keywords

Black mustard (Brassica nigra L.)Q1

Chlorophyll fluorescence and Stomatal conductanceQ1

Abstract

Methyl jasmonate and Epi-brassinolide as plant growth regulators have significant biological effects on plant growth, including increasing of tolerance to salt stress in plants. In this research, the effects of salinity stress and its interaction with methyl jasmonate and Epi-brassinolide on chlorophyll concentration, rate of photosynthesis, transpiration, stomatal conductance and resistance and chlorophyll fluorescence in medical plant of black mustard (Brassica nigra L. ) in hydroponic conditions, were evaluated based on a factorial design in completely randomized design with four replications in 2015, at the Damghan branch of Islamic Azad University was studied. Plants were treated with various concentrations of sodium chloride (0, 40, 80 mM), methyl jasmonate (0 and 75 mM) and Epi-brassinolide (0, 5. 1, 3 mM) four weeks after germination. The plants treated with salinity, with increasing concentration of sodium chloride, their chlorophyll concentrations, Hill reaction rate, transpiration and stomatal conductance decreased but the stomatal resistance and maximum fluorescence (Fm) increased. At the same amounts of NaCl, with increasing concentrations of methyl jasmonate and Epi-brassinolide all tested traits were improved, such that by spraying 75 mM of methyl jasmonate, stomatal conductance (90. 23 m2s mol-1) reached its highest level. With increasing levels of Epi-brassinolide in the same condition, the salinity of maximum fluorescence (Fm) reached to (559. 21). The results of this experiment showed that the use of methyl jasmonate and 24-epibrassinosteroids can reduce stomatal resistance and increase stomatal conductance, chlorophyll concentration and improve the rate of photosynthesis and thus reduce the effects of salt stress in black mustard (Brassica nigra L. ).

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APA: Copy

REZAEI, HALIMEH, SAEIDI SAR, SAKINEH, EBADI, MOSTAFA, & ABBASPOUR, HOSSEIN. (2018). The effect of spraying of methyl jasmonate and Epi-brassinolide on photosynthesis, chlorophyll fluorescence and leaf stomatal traits in black mustard (Brassica nigra L. ) under salinity. JOURNAL OF PLANT PROCESS AND FUNCTION, 7(25 ), 53-62. SID. https://sid.ir/paper/364929/en

Vancouver: Copy

REZAEI HALIMEH, SAEIDI SAR SAKINEH, EBADI MOSTAFA, ABBASPOUR HOSSEIN. The effect of spraying of methyl jasmonate and Epi-brassinolide on photosynthesis, chlorophyll fluorescence and leaf stomatal traits in black mustard (Brassica nigra L. ) under salinity. JOURNAL OF PLANT PROCESS AND FUNCTION[Internet]. 2018;7(25 ):53-62. Available from: https://sid.ir/paper/364929/en

IEEE: Copy

HALIMEH REZAEI, SAKINEH SAEIDI SAR, MOSTAFA EBADI, and HOSSEIN ABBASPOUR, “The effect of spraying of methyl jasmonate and Epi-brassinolide on photosynthesis, chlorophyll fluorescence and leaf stomatal traits in black mustard (Brassica nigra L. ) under salinity,” JOURNAL OF PLANT PROCESS AND FUNCTION, vol. 7, no. 25 , pp. 53–62, 2018, [Online]. Available: https://sid.ir/paper/364929/en

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