RESUMEN
MAIN CONCLUSION: Seed priming with NaCl mimicked the conditions of natural priming to improve the tissue tolerance nature of sensitive legumes, which helps to maintain survivability and yield in mildly saline areas. Seed priming with NaCl is a seed invigoration technique that helps to improve plant growth by altering Na+ and K+ content under salt stress. Legumes are overall sensitive to salt and salinity hampers their growth and yield. Therefore, a priming (50 mM NaCl) experiment was performed with two different legume members [Cicer arietinum cv. Anuradha and Lens culinaris cv. Ranjan] and different morpho-physiological, biochemical responses at 50 mM, 100 mM, and 150 mM NaCl and molecular responses at 150 mM NaCl were studied in hydroponically grown nonprimed and primed members. Similarly, a pot experiment was performed at 80 mM Na+, to check the yield. Tissue Na+ and K+ content suggested NaCl-priming did not significantly alter the accumulation of Na+ among nonprimed and primed members but retained more K+ in cells, thus maintaining a lower cellular Na+/K+ ratio. Low osmolyte content (e.g., proline) in primed members suggested priming could minimize their overall osmolytic requirement. Altogether, these implied tissue tolerance (TT) nature might have improved in case of NaCl-priming as was also reflected by a better TT score (LC50 value). An improved TT nature enabled the primed plants to maintain a significantly higher photosynthetic rate through better stomatal conductance. Along with this, a higher level of chlorophyll content and competent functioning of the photosynthetic subunits improved photosynthetic performance that ensured yield under stress. Overall, this study explores the potential of NaCl-priming and creates possibilities for considerably sensitive members; those in their nonprimed forms have no prospect in mildly saline agriculture.
Asunto(s)
Cicer , Fabaceae , Lens (Planta) , Cloruro de Sodio/farmacología , Potasio , Estrés Salino , Sodio , Semillas , Verduras , IonesRESUMEN
This paper reports the presence of alpha radioactivity in a few medicinal plants, which form the main components of some hebal drugs. Assessment of effective dose has also. been done. The total alpha radio activity in medicinal plants has been found within 47 - 245 Bq/Kg and the effective dose found in the range 2.8 - 4.7 µSv. This data is required for environmental monitoring.