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Several morpho physiological traits are traditionally used as
screening criteria for drought tolerance such as relative water
content (RWC), stomatal index, water use efficiency (WUE) etc. Crop
WUE can be improved by optimizing crop transpiration. Several
workers have proposed carbon isotope discrimination (CID), ash
content and canopy temperature depression (CTD) as selection
criteria for transpiration efficiency (TE), which may serve as the
surrogate measures for improvement in grain yield.To identify
suitable physiological traits useful in wheat breeding under water
stress environment is the major thrust area of present
investigation. For this, Durum and aestivum genotypes were selected
from the breeding material of ARI, Pune (MS, India).Experimental
trials on Triticum durum were conducted under three different water
regimes viz. residual soil moisture stress (RSMS), post anthesis
water stress (PAWS) as limited irrigation (LI) and well watered
(WW) conditions.Data were collected for agronomical and
physiological characters. Soil water balance model 'BUDGET' (Raes
et.al. 2006) has been used for deriving WUE using meteorological,
rainfall and irrigation data of (2004-05)and(2006)
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