Variation in osmotic adjustment of accessions of lentil (Lens culinarisMedic.) in response to drought stress

Abstract

The effect of drought stress on the growth of nine accessions of lentil, ILL 5845, ILL 6451, ILL 6788, ILL 6793, ILL 6796, ILL 6439, ILL 6778, Local Masoor and Masoor 18-10 was assessed in a pot experiment, using control and drought cycles.Accessions ILL 6439 and ILL 6451 produced significantly greater biomass, had highest osmotic adjustment, a high wax content, a high leaf resistance, a high relative water-content and high leaf elasticity (A"'w/AR= gradient of water potential/gradient of relative water content) compared with the other accessions.From this study, it is established that the drought tolerance of the lentil accessions examined here is highly related to their capacity for osmotic adjustment. Thus osmotic adjustment could be a selection criterion for breeding for drought resistance in lentil. The detection of variation in the response to drought stress in a very small sample of lentil accessions examined here suggests that the advancement of drought tolerance through selection and breeding methods is possible.

Effect of PEG-induced drought stress on seed germination of four lentil genotypes

“…Selection of plants with a better drought tolerance is critical in dry environments (Ashraf et al 1992;Tuberosa & Salvi 2006). However, controlled and uniformly repeated simulation of drought in the field cannot be easily achieved (Shaheen & Hood-Nowotny 2005).…”

Evaluation of Selected Indian Bread Wheat (Triticum aestivumL.) Genotypes for Morpho-physiological and Biochemical Characterization under Salt Stress Conditions

“…Chlorophyll is membrane bound and depends upon the membrane stability thus under saline conditions it seldom remains intact (Ashraf et al 1992;Shah et al 2007). Decrease in chlorophyll contents due to salinity has also been reported elsewhere.…”

Screening of Mungbean (Vigna radiata L. Wilczek) Genotypes against Water Stress Mediated through Polyethylene Glycol

“…The process of creating new varieties could be facilitated by screening of genotypes with higher resistance. Selection of parents with a better drought tolerance is critical in dry environments (Ashraf et al, 1992;Tuberosa and Salvi, 2006). However, controlled and uniformly repeated simulation of drought in the field cannot be easily achieved (Shaheen and Hood-Nowotny, 2005).…”