Exogenous Application of Sodium nitroprusside (Nitric Oxide Donor) Improves Yield Potential and Seed Quality of Brassica Napus L
2011
Gagneja, Divya | Kaur, Navjyot | Setia, Neelam
The localised application of nitric oxide (NO) donor-sodium nitroprusside (SNP-100, 200 and 500 µg ml⁻¹) given to the terminal inflorescence (TI) of Brassica napus L. GSL-1 at floral initiation stage greatly influenced its growth and yield parameters. SNP treatments (100 and 200 µg ml⁻¹) significantly increased TI length, number of open flowers and siliquae, seed number per siliqua, 1000-seed weight and seed yield per TI, however, 500 µg ml⁻¹ SNP proved inhibitory. The improvement in seed yield due to SNP treatments was accompanied by simultaneous enhancement of photosynthetic efficiency of TI and siliqua wall measured in terms of chlorophyll content and Hill reaction activity of isolated chloroplasts and enhanced accumulation of dry matter and its partitioning towards developing siliquae. Seeds of SNP-treated plants also exhibited higher content of various biochemical reserves viz. total soluble sugars, starch, total soluble proteins, total free amino acids and oil with maximum enhancement occurring due to 100 µg ml⁻¹ SNP treatment. SNP treatments also exerted profound influence on vascular tissue differentiation in TI.
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