EFFECT OF FOLIAR APPLICATION OF METHYL JASMONATE IN COLD TOLERANCE IMPROVEMENT OF GREENHOUSE-GROWN CUCUMBER CV. ‘NEGIN’ SEEDLINGS

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BAZL SHIVA; KARIMI ROUHOLLAH; ERSHADI AHMAD; Shahbodaghlo Alireza; RASOULI MOUSA

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Journal: JOURNAL OF CROPS IMPROVEMENT (JOURNAL OF AGRICULTURE) Year:2015 | Volume:17 | Issue:2 Page(s): 441-455

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Title

EFFECT OF FOLIAR APPLICATION OF METHYL JASMONATE IN COLD TOLERANCE IMPROVEMENT OF GREENHOUSE-GROWN CUCUMBER CV. ‘NEGIN’ SEEDLINGS

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Keywords

COLD STRESSQ2

CHLOROPHYLL CONTENTQ2

ELECTROLYTE LEAKAGEQ2

SOLUBLE CARBOHYDRATESQ1

Abstract

COLD STRESS is one of the limiting factors in production of greenhouse vegetables. Chemicals offer useful approach to reduce low temperature-induced damages. This study was conducted to evaluate the effect of foliar application of methyl jasmonate (MeJA) at concentrations of 0 (control), 50, 100, 200 mM) on ELECTROLYTE LEAKAGE (EL), relative water content (RWC), SOLUBLE CARBOHYDRATES, proline, CHLOROPHYLL CONTENT and chilling index of greenhouse- grown cucumber (Cucumis sativus L. cv ‘Negin’) in 4-6 leaf stage. MeJA was sprayed two times/day on cucumber seedling in a greenhouse of Bu-Ali Sina University, as a factorial based on completely randomized design with five replications per treatment, inlate- summer of 2013. Two days after spraying, seedlings were transferred from 25oC to cold chamber and were subjected to chilling treatments of 15, 10 and 5oC for 4 hours. The EL of all plants increased with reducing the temperature. However, in MeJA-treated plants, especially in application of 200 mM, a lower leaf EL was observed. A clear increase in SOLUBLE CARBOHYDRATES and proline concentration was observed with decreasing temperature from 15 to 5ºC in all plants while in MeJA -treated seedlings, especially in application of 200 and 100μM, a greater amount of these osmolytes were observed in compared to control. Moreover, exogenous application of MeJA reduced RWC and visual damage of cold-stressed seedlings but increased CHLOROPHYLL CONTENT in compared to control plants. These changes correlated with the increment of cold tolerance in the cucumber plants. The results indicated that MeJA application especially at 200 mM has the capacity to improve chilling tolerance of seedlings and can be used as a prophylactic tool to protect against chilling injury of cucumber cultivars in greenhouses.

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APA: Copy

BAZL, SHIVA, KARIMI, ROUHOLLAH, ERSHADI, AHMAD, Shahbodaghlo, Alireza, & RASOULI, MOUSA. (2015). EFFECT OF FOLIAR APPLICATION OF METHYL JASMONATE IN COLD TOLERANCE IMPROVEMENT OF GREENHOUSE-GROWN CUCUMBER CV. ‘NEGIN’ SEEDLINGS. JOURNAL OF CROPS IMPROVEMENT (JOURNAL OF AGRICULTURE), 17(2), 441-455. SID. https://sid.ir/paper/209434/en

Vancouver: Copy

BAZL SHIVA, KARIMI ROUHOLLAH, ERSHADI AHMAD, Shahbodaghlo Alireza, RASOULI MOUSA. EFFECT OF FOLIAR APPLICATION OF METHYL JASMONATE IN COLD TOLERANCE IMPROVEMENT OF GREENHOUSE-GROWN CUCUMBER CV. ‘NEGIN’ SEEDLINGS. JOURNAL OF CROPS IMPROVEMENT (JOURNAL OF AGRICULTURE)[Internet]. 2015;17(2):441-455. Available from: https://sid.ir/paper/209434/en

IEEE: Copy

SHIVA BAZL, ROUHOLLAH KARIMI, AHMAD ERSHADI, Alireza Shahbodaghlo, and MOUSA RASOULI, “EFFECT OF FOLIAR APPLICATION OF METHYL JASMONATE IN COLD TOLERANCE IMPROVEMENT OF GREENHOUSE-GROWN CUCUMBER CV. ‘NEGIN’ SEEDLINGS,” JOURNAL OF CROPS IMPROVEMENT (JOURNAL OF AGRICULTURE), vol. 17, no. 2, pp. 441–455, 2015, [Online]. Available: https://sid.ir/paper/209434/en

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