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Article

Alleviation of Salt-Inhibited Germination and Seedling Growth of Kidney Bean by Seed Priming and Exogenous Application of Salicylic Acid (SA) and Hydrogen Peroxide (H2O2)

1
Department of Seed Science and Technology, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
2
Department of Soil Science, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
3
Department of Bio-Functional Chemistry, Okayama University, Okayama 700-8530, Japan
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Academic Editors: José Antonio Hernández Cortés, Gregorio Barba-Espín and Pedro Diaz-Vivancos
Seeds 2022, 1(2), 87-98; https://doi.org/10.3390/seeds1020008
Received: 24 February 2022 / Revised: 6 April 2022 / Accepted: 6 April 2022 / Published: 8 April 2022
(This article belongs to the Special Issue Seed Priming Approaches That Achieve Environmental Stress Tolerance)
Salinity is a dominant obstacle to the proper germination of seeds, growth of seedlings, and, consequently, the production of crops. The priming of seeds with different treating agents can efficiently impart salinity tolerance. Kidney bean is a nutritious and popular vegetable crop in the world. Literature shows that salt stress negatively disturbs the germination and growth of kidney beans. In the present research, we investigated the potentiality of salicylic acid (SA) and hydrogen peroxide (H2O2) as priming and exogenous agents to alleviate the salinity-inhibited germination and growth of kidney beans. The seeds were pretreated with SA (1 mM and 2 mM) and H2O2 (0.1 mM and 0.15 mM) and soaked in normal tap water (hydro-priming) for 60 min. In addition, for the control experiment, untreated seeds were used. Finally, primed seeds were subjected to salt stress (150 mM NaCl). Our results exhibited that salt stress considerably lowered the percentage of germination (GP), germination index (GI), seed vigor index (SVI), shoot length (SL), root length (RL), shoot–root fresh and dry biomass, and plant growth. The results also exhibited that salt stress significantly decreased the relative water content (RWC) and photosynthetic pigments such as chlorophyll, carotenoids, lycopene, and beta-carotene contents. The SA- and H2O2- and hydro-priming stimulated the GP, GI, SL, RL, SVI, and seedling growth. Data also revealed that the supplementation of SA and H2O2 enhanced RWC and photosynthetic pigments. When compared to other treatments, pretreatment with 1 mM SA was determined to be comparatively more effective at imparting the salt tolerance of kidney beans. Overall, these results, via a heatmap and principal component analysis, uncovered that priming and exogenous applications of SA and H2O2 can improve salt tolerance and enhance germination and seedling characteristics of kidney beans. View Full-Text
Keywords: abiotic stress; germination; priming; salinity; photosynthetic pigments abiotic stress; germination; priming; salinity; photosynthetic pigments
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MDPI and ACS Style

Tania, S.S.; Rhaman, M.S.; Rauf, F.; Rahaman, M.M.; Kabir, M.H.; Hoque, M.A.; Murata, Y. Alleviation of Salt-Inhibited Germination and Seedling Growth of Kidney Bean by Seed Priming and Exogenous Application of Salicylic Acid (SA) and Hydrogen Peroxide (H2O2). Seeds 2022, 1, 87-98. https://doi.org/10.3390/seeds1020008

AMA Style

Tania SS, Rhaman MS, Rauf F, Rahaman MM, Kabir MH, Hoque MA, Murata Y. Alleviation of Salt-Inhibited Germination and Seedling Growth of Kidney Bean by Seed Priming and Exogenous Application of Salicylic Acid (SA) and Hydrogen Peroxide (H2O2). Seeds. 2022; 1(2):87-98. https://doi.org/10.3390/seeds1020008

Chicago/Turabian Style

Tania, Shaila Shermin, Mohammad Saidur Rhaman, Farjana Rauf, Md. Moklasur Rahaman, Muhammad Humayun Kabir, Md. Anamul Hoque, and Yoshiyuki Murata. 2022. "Alleviation of Salt-Inhibited Germination and Seedling Growth of Kidney Bean by Seed Priming and Exogenous Application of Salicylic Acid (SA) and Hydrogen Peroxide (H2O2)" Seeds 1, no. 2: 87-98. https://doi.org/10.3390/seeds1020008

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