Study of yield and yield components of lentil varieties under different water stress

To evaluate the yield and yield components of lentil varieties under different water stress, an experiment was conducted in research farm of agriculture faculty of Islamic Azad university of Takestan Branch as split plot based on Randomized Complete Block Design (RCBD) with three replications during 1389-90. The treatments included four irrigation levels: I1: normal irrigation (as control), I2: cut of irrigation in stem formation phase for 20 days, I3: cut of irrigation in flowering phase for 20 days, I2: cut of irrigation in seed filling period for 20 days as the major factor and four lentil varieties (V1: Kimia, V2: Sabz-e-Kohin, V3: Local of Zanjan and V4: Gachsaran) as the minor factor. The results indicated that irrigation and variety treatments had significant effect in 1% propability level on all of traits. Interaction effect was significant on grain yield and pod number per square meter in 1% propability level. I2, I3 and I4 treatments led to decrease in pod and seed number per plant and square meter, 1000- seed weight and seed yield. The greatest seed yield related to I1 (1263.02 Kg. ha-1) and then I4 (1160.18 Kg. ha-1) treatments. The greatest seed yield related to V4 (1027.86 Kg. ha-1) and then V1 (964.34 Kg. ha-1) treatments. I1V4 (1441.27 Kg. ha-1) and then I1V1 (1335..69 Kg.ha-1) and I4V4 (1285.82 Kg.ha-1) interaction treatments had the highest seed yield. The greatest pod number per square related to Kimia variety. The greatest 1000-seed weight related to Gachsaran variety.