Articles
Drought pretreatment mitigates chilling stress of tomato seedlings through altering gas exchange parameters
Article number
1315_64
Pages
433 – 438
Language
English
Abstract
Low temperatures lead to chilling injury symptoms of tomato plants.
In this study, the possibility of chilling tolerance enhancing of tomato seedling by drought pretreated with 10 or 20% polyethylene glycol (PEG) was investigated in the greenhouse of the agricultural faculty of Bu-Ali Sina University, Hamedan in 2015. After imposing drought stress, the seedlings were subjected to chilling 6 h day‑1 at 3°C for 6 days.
Results showed that PEG pretreatment improved the growth rate of tomato seedlings subjected to chilling stress and improved chlorophyll content, net photosynthesis, stomatal conductance, transpiration, and internal CO2 concentration compared with the control.
The highest cold tolerance was obtained with 20% PEG application.
In general, results indicate that PEG pretreatment by altering gas exchange parameters reduced the adverse effect of chilling on tomato seedlings.
In this study, the possibility of chilling tolerance enhancing of tomato seedling by drought pretreated with 10 or 20% polyethylene glycol (PEG) was investigated in the greenhouse of the agricultural faculty of Bu-Ali Sina University, Hamedan in 2015. After imposing drought stress, the seedlings were subjected to chilling 6 h day‑1 at 3°C for 6 days.
Results showed that PEG pretreatment improved the growth rate of tomato seedlings subjected to chilling stress and improved chlorophyll content, net photosynthesis, stomatal conductance, transpiration, and internal CO2 concentration compared with the control.
The highest cold tolerance was obtained with 20% PEG application.
In general, results indicate that PEG pretreatment by altering gas exchange parameters reduced the adverse effect of chilling on tomato seedlings.
Publication
Authors
F. Ghanbari, M. Sayyari
Keywords
photosynthesis, transplanting, hardening, stomatal conductance, transpiration
Groups involved
- Division Temperate Tree Fruits
- Division Vine and Berry Fruits
- Division Tropical and Subtropical Fruit and Nuts
- Division Ornamental Plants
- Division Plant-Environment Interactions in Field Systems
- Division Postharvest and Quality Assurance
- Division Horticulture for Development
- Division Precision Horticulture and Engineering
- Division Plant Genetic Resources, Breeding and Biotechnology
- Commission Cultivar Registration
- Division Horticulture for Human Health
- Division Greenhouse and Indoor Production Horticulture
- Division Landscape and Urban Horticulture
- Commission Banana
- Division Vegetables, Roots and Tubers
- Division Temperate Tree Nuts
- Commission Agroecology and Organic Farming Systems
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