The present study evaluated the effects of exogenous NO supply, using sodium nitroprusside (SNP) as a source of NO, on germination and seedling growth of mungbean (Vigna radiata) under salt stress conditions. The results showed that the seeds treated with NO solution (0.2 mM SNP) exhibited 80% and 109% higher germination percentage and germination stress tolerance index (GSI) than untreated seeds (control) under salt stress conditions. Similarly, the seedlings fertigated with NO maintained the highest values of 77.8%, 84.3%, 77.2%, 60.5% and 100.3% for plant height stress tolerance index (PHSI), root length stress tolerance index (RLSI), shoot fresh weight stress tolerance index, root fresh weight stress tolerance index (RFSI) and dry matter stress tolerance index (DMSI), respectively. Moreover, the NO fertigated seedlings maintained 57% higher chlorophyll contents than control seedlings. It is concluded that exogenous NO supply is an effective approach to ensure uniform stand establishment in saline regions of the world.

Effect of exogenous nitric oxide (NO) supply on germination and seedling&nbsp;growth of mungbean (cv. Nm-54) under salinity stress

Background: Drought stress poses a significant threat to global crop productivity and quality, with climate variability exacerbating its intensity in recent decades. This susceptibility underscores the urgent need to address the impact of water scarcity on agricultural systems. 
 
Methods: Study was carried out to investigate the effects of drought on mustard (TS 67) and wheat (HD 3086) cultivars popularly grown in north eastern part of India. Drought was imposed at three distinct stages of crop growth (vegetative, flowering and pod filing) for 15 days to study the variability in response mechanisms if any. 
 
Result: Drought significantly (p&le;0.05) reduced plant height and leaf number in both the crops. It had a significant (p&le;0.05) inhibitory impact on leaf chlorophyll content in the tested wheat and mustard cultivars. Drought lowers the rate of photosynthesis and this decline was more distinct when stress was applied during flowering stage of both the crops. Plant height stress tolerance index (PHSI) and dry matter stress tolerance index (DMSI) values indicated mustard (TS 67) as more tolerant crop to the imposed drought compared to wheat (HD 3086).&nbsp;

Effect of exogenous nitric oxide (NO) supply on germination and seedling growth of mungbean (cv. Nm-54) under salinity stress

Drought Induced Impact on Growth and Yield of Wheat and Mustard: A Comparative Study