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Plant Science Today (PST)

Research Articles

Vol. 11 No. sp4 (2024): Recent Advances in Agriculture by Young Minds - I

Morphological and biochemical adaptations of finger millet (Eleusine coracana) to salinity stress: A principal component analysis

DOI
https://doi.org/10.14719/pst.5881
Submitted
16 October 2024
Published
25-12-2024

Abstract

Salt stress is a major factor in decreasing the yield under challenging conditions. To overcome these issues, the current study investigates the impact of salinity stress on the growth and biochemical adaptation of finger millet (Eleusine coracana, variety TRY 1). Therefore, a pot experiment was conducted during 2023–2024, to assess the effects of salinity stress (EC levels ranging from <1 to 12 dS/m) on finger millet. The experiment followed a completely randomized design with three replications. Plant growth and yield improved under mild salinity (EC 2 dS/m). The highest grain yield of 12.3 g/plant and increased proline and chlorophyll content were observed at this salinity level. However, plant growth and yield significantly declined with increasing salinity (EC > 2 dS/m). Proline levels increased by 67% under EC 12 dS/m, highlighting its role in osmotic adjustment, while total sugars decreased by 16.2% at higher salinity. Chlorophyll content also increased slightly under moderate salinity but declined sharply at higher levels, indicating impaired photosynthesis. Overall, moderate salinity stress (EC 2 dS/m) promoted finger millet growth and physio-biochemical adaptations, whereas higher salinity levels led to marked reductions in productivity, growth, and biochemical responses. The TRY 1 variety displayed notable salt tolerance, surviving up to EC 12 dS/m, with optimal growth at EC 2 dS/m.

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