Effect of plant growth regulating compounds on chlorophyll, photosynthetic rate and yield of greengram

A field experiment was conducted to study the influence of different growth regulating compounds on chlorophyll, photosynthetic rate and yield in greengram during rabi 2009-10. Among the growth regulators growth promoting substance NAA (20 ppm) recorded significantly higher values for photosynthetic rate, chlorophyll content (SCMR) values were highest in chlormequat chloride 50% SL 375.0 g a.i ha-1, mepiquat chloride 5% AS (5%) and NAA (20ppm) during reproductive stage. However the seed yield was significantly more with NAA (20 ppm) followed by mepiquat chloride 5% AS, brassinosteroid (20 ppm) and chlormequat chloride   (137.5 g a.i ha-1).