Division of Plant Physiology, Indian Agricultural Research Institute, New Delhi 110012
The effect of moisture stress imposed at tillering and anthesis stages on 4 drought susceptible (HD 2329, HD 2009, WL 711, WH 147) and 4 drought tolerant (C 306, NI 5439, Pissi Local and DL 153-2) genotypes of wheat was studied under pot culture conditions. Water potential, transpiration, photosynthesis, nitrate reductase activity and grain yield decreased under moisture stress. Tolerant genotypes generally had lower rates of transpiration and higher photosynthesis, nitrate reductace activity, leaf water potential and grain yield than the susceptible genotypes under moisture stress. Drought at anthesis stage was more detrimental than at tillering stage.
