CHILLING TOLERANCE IMPROVING OF TOMATO SEEDLING BY DROUGHT STRESS PRETREATMENT

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GHANBARI FARDIN; SAYYARI MOHAMMAD

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Journal: Iranian Journal of Horticultural Science Year:2017 | Volume:48 | Issue:3 Page(s): 669-679

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Information Journal Paper

Title

CHILLING TOLERANCE IMPROVING OF TOMATO SEEDLING BY DROUGHT STRESS PRETREATMENT

Author(s)

GHANBARI FARDIN | SAYYARI MOHAMMAD | Issue Writer Certificate

Keywords

CHLOROPHYLL FLUORESCENCEQ2

ELECTROLYTE LEAKAGEQ1

HARDENINGQ1

MALONDIALDEHYDEQ1

POLYETHYLENE GLYCOLQ1

Abstract

Low temperatures lead to numerous physiological disturbances in the cells of chilling-sensitive plants, resulted in chilling injuries and death of tropical and subtropical plants such as tomatoes. In this study, the possibility of cold stress tolerance enhancement of tomato seedlings by imposing drought stress with 10 or 20 percent of POLYETHYLENE GLYCOL (PEG) for 10 days was investigated in the greenhouse of agricultural faculty of Bu-Ali Sina University, Hamedan, Iran. The layout was factorial experiment in CRD design with four replications. After drought pretreatment, the seedlings were subjected to chilling 6 h/day at 3°C for 6 days. Drought pretreatment improved growth rate of tomato seedlings subjected to chilling stress as well as RWC, phenol, chlorophyll content and CHLOROPHYLL FLUORESCENCE ratio (Fv/Fm) when compared with the controls un-chilled seedlings. Interaction effects showed that highest value of root (2.25 g) and shoot fresh (4.4 g) weight, RWC (88.31 %), Fv/Fm (0.834) and total chlorophyll (1.62 mg/g F.W) were obtained in 0 % PEG under the chilling control. In contrast, the highest amounts of MDA (1.46 mm/g F.W) and phenol (10.86 mg/g F.W) content were obtained from 20% PEG and non-chilling stress. In general, results indicated that drought pretreatment could be used effectively to protect tomato seedlings from damaging effects of low temperatures stress at the early stages of growth.

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APA: Copy

GHANBARI, FARDIN, & SAYYARI, MOHAMMAD. (2017). CHILLING TOLERANCE IMPROVING OF TOMATO SEEDLING BY DROUGHT STRESS PRETREATMENT. IRANIAN JOURNAL OF HORTICULTURAL SCIENCES (IRANIAN JOURNAL OF AGRICULTURAL SCIENCES), 48(3 ), 669-679. SID. https://sid.ir/paper/147983/en

Vancouver: Copy

GHANBARI FARDIN, SAYYARI MOHAMMAD. CHILLING TOLERANCE IMPROVING OF TOMATO SEEDLING BY DROUGHT STRESS PRETREATMENT. IRANIAN JOURNAL OF HORTICULTURAL SCIENCES (IRANIAN JOURNAL OF AGRICULTURAL SCIENCES)[Internet]. 2017;48(3 ):669-679. Available from: https://sid.ir/paper/147983/en

IEEE: Copy

FARDIN GHANBARI, and MOHAMMAD SAYYARI, “CHILLING TOLERANCE IMPROVING OF TOMATO SEEDLING BY DROUGHT STRESS PRETREATMENT,” IRANIAN JOURNAL OF HORTICULTURAL SCIENCES (IRANIAN JOURNAL OF AGRICULTURAL SCIENCES), vol. 48, no. 3 , pp. 669–679, 2017, [Online]. Available: https://sid.ir/paper/147983/en

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