The Effects of Drought Stress and Zeolites on Morpho-physiological traits of Lathyrus sativus

The objective of this study was to determine the effect of different rates of zeolites and irrigation on the protein (percent and yield), biological yield and yield components of Lathyrus sativus. Treatments were two levels of irrigation (irrigation at field capacity (FC) and 50 % FC) applied in two-leaf stage, and four levels of zeolites (0, 10, 20 and 30 ton/ha). Before planting, zeolite was added to the soil in deepness of root development. Results of ANOVA indicated significant effect of irrigation on the stem and leaf weight, and significant effect zeolite on the stem weight, leaf weight and biological yield. Water deficit stress significantly decreased these traits, whereas the application of zeolites compensated the negative effect of drought stress, especially in high rates of zeolite application (30 ton/ha). The highest stem weight (0.64 g/plant), leaf weight (0.65 g/plant) and biological yield (1.29 g/plant) was obtained from application of 30 ton/ha zeolites. These findings strongly suggested that the irrigation intervals of Lathyrus could be increased by application of zeolites.

کلیدواژه ها:

Biomass ، Lathyrus sativus ، Protein ، Water stress ، Zeolite