Mitigation of salt stress by γ-amino butyric acid (GABA) and proline in maize (Zea mays L.)
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Date
2022
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Punjab Agricultural University, Ludhiana
Abstract
The present investigation was conducted to study the effect of proline and GABA on physiological and biochemical parameters at different on different salt stress levels in two varieties of J-1006 and J-1007 maize (Zea mays). The salt stress negatively affected the seed germination and seed vigour parameters. Seeds of both the varieties were subjected to different treatments viz. Proline (10mM and 20 mM) and GABA (100ppm and 500ppm) at salt stress level of 50mM, 75mM and 100mM NaCl. Various parameters were recorded from seedlings after 10 days of germination. The seed treatments positively affected the physiological parameters (percentage germination, seedling length, seedling biomass, seed vigour I and seed vigour II) and biochemical parameters (total soluble sugars, total soluble protein and activities of antioxidant enzymes viz. Catalase, peroxidase and superoxide dismutase) of treated seedlings as compared to control. However, a reduction was observed in malondialdehyde content continue to decreased with seed treatments at all salinity levels. The results recoded that proline 20mM and GABA 500 ppm were more effective than proline 10mM and GABA 500ppm respectively. Therefore, the application of seed treatments viz, proline and GABA could play an important role in mitigating the effect of salt stress.
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Sharma, Sakshi (2022). Mitigation of salt stress by γ-amino butyric acid (GABA) and proline in maize (Zea mays L.) (Unpublished M.Sc. thesis). Punjab Agricultural University, Ludhiana, Punjab, India.