Mitigation the adverse effect of salinity stress on the performance of the tomato crop by exogenous application of chitosan

Bulletin of the National Research Centre

Heba I. Mohamed¹  Izhar Ullah²  Abdul Basit²  Shahryar Javed²  Syed Tanveer Shah²  Naeem Ullah²  Imran Ahmad² 

[1] Biological and Geological Sciences Department, Faculty of Education, Ain Shams University, El Makres St. Roxy, 1575, Cairo, Egypt;Department of Horticulture, Faculty of Crop Production Sciences, The University of Agriculture, 3125, Peshawar, Pakistan;

关键词: Abiotic stress;    Chitosan;    Salinity;    Tomato;    Quality;    Growth;   

DOI  :  10.1186/s42269-020-00435-4

来源: Springer

【 摘 要 】

BackgroundIn recent years, ecofriendly compounds such as chitosan has been used to alleviate the destructive effects of salt stress. Chitosan is a natural biodegradable compound with no toxicity in nature and act as a stress tolerance inductor involved in physiological processes and prevent water loss through transpiration. Tomato cv. Rio Grande grown in pots was subjected with salinity stress in the form of 4 levels (0, 50, 100 and 150 mM) whose effect was mediated by treating it with different concentration of chitosan (0, 50, 100 and 150 mg L−1).ResultsThe data revealed that various application of salinity had a negative effect on almost all the studied parameters. Tomato plants treated with distilled water having no salinity (control) recorded maximum plant height (cm), average number of compound leaves plant−1, leaf area (cm2), stem diameter (mm), number of fruits plant−1, fruit firmness (kg cm−2), leaf chlorophyll content (SPAD), fruit juice pH, yield plant−1 (kg) and minimum total soluble solids (Brix°). Whereas, minimum plant height (cm), average number of compound leaves plant−1, leaf area (cm2), stem diameter (mm), number of fruits plant−1, fruit firmness (kg cm−2), leaf chlorophyll content (SPAD), fruit juice pH, yield plant−1 (kg) and maximum total soluble solids (Brix°) were found in plants treated with salinity level of 150 mM. Chitosan concentration of 150 mg L−1 significantly mediated the effect of salinity stress and recorded maximum plant height (cm), average number of compound leaves plant−1, leaf area (cm2), stem diameter (mm), number of fruits plant−1, fruit firmness (kg cm−2), leaf chlorophyll content (SPAD), total soluble solids (Brix°) and yield plant−1 (kg) with minimum fruit juice pH.ConclusionIt is concluded that foliar application of chitosan at the rate of 150 mg L−1 and salinity stress 150 mM could have positive impact on performance of tomato.

【 授权许可】

CC BY