GROWTH AND DROUGHT TOLERANCE INDICES OF SELECTED WHEAT GENOTYPES UNDER VARIABLE SOIL MOISTURE REGIMES

The field experiment was carried out to investigate the effect of different irrigation on growth and yield Performance of wheat varieties assessment in plant physiology research field of BARI, Joydebpur, Gazipur. During Rabi season 2015-16. Wheat varieties, i.e, BARI Gom 26 and BARI Gom 28 were evaluated for their performance against irrigation and drought. The plant height (cm), Spike length (cm), 1000 grain weight (gm) and Grain Yield (ton/ha) showed significant in the irrigation and varietal effect. BARI Gom 28 gives the highest plant height (78.00 cm) in irrigation at growth and development stage while lowest (71.00 cm) height was found in BARI Gom 26 at no irrigation treatment. The highest (4.44 gm) seed no/plant was found significant at one irrigation treatment of BARI Gom 28 while the lowest (4.10) was found at BARI Gom 26 at no irrigation drought stage. The Yield (ton/ ha) was found significantly highest (4.61 ton/ ha) at well irrigation at BARI Gom 28 and the lowest is at BARI Gom 28 in no irrigation drought of BARI Gom 28. The highest (373.33 kg/ha/m3) water use efficiency (WUE) was found in BARI Gom 26 in no irrigation treatment while the lowest (173.77 kg/ha/m³) water use efficiency (WUE) was found in well irrigated treatment in the same variety. So it may be opined that increasingly irrigation will not enhance the yield and water use efficiency of wheat.