Regulation of salinity tolerance in Brassica juncea (L.) introgression lines: Osmoprotectants, antioxidative molecules and ionic content

Indian mustard [Brassica juncea (L.) Czern & Coss] is one of the most important oilseed crops worldwide yet drought and salinity stress significantly reduced its growth yield. The research was carried out in order to test effect on osmoprotectants (total soluble sugars, proline), antioxidant molecules (ascorbate, ?-tocopherol) ionic content from dry sample leaves introgression lines varieties Brassica juncea. Permanent saline plots are maintained field soil sciences where different doses sodium carbonate were given maintain relative bicarbonate (RSC) three levels. results revealed significant biochemical attributes as well content. Increase total proline, ascorbate, ?-tocopherol Na+ ion whereas rest ions Ca2+, Mg2+ K+ decreased with increased Increased accumulation Na+/K+ ratio K+/Na+. Significant finding among low high correspondingly K+/Na+ ratio. Decreased calcium magnesium resulted decline chlorophyll membrane stability under conditions while concentration regulated opening closing stomata thus hampering photosynthesis.