مقایسه کارایی شاخص‌های جوانه‌زنی و میزان و سرعت نشت الکترولیت بذر یونجه‌ در برآورد استقرار گیاهچه در مزرعه

In order to evaluate the predictability of alfalfa seedling establishment of a specific alfalfa seed lot by use of germination indices and electrolyte leakage and its rate and determining the most appropriate and rapid method as vigor test, experiments were conducted in field and laboratory on 10 alfalfa seed lots of Hamedani and Qare-unja ecotypes. Vigor tests includes electrical conductivity in 2 treated temperatures (20 and 25°C) and incubation duration in 3 levels (24, 48, 72 hours) and germination tests and seedling growth tests all in 5 germination temperatures (5,10,15,20 and 25°C). Each experiment conducted in a split plot design based on CRD with 4 replications. Emergence percentage and seedling establishment tests carried out in a randomized block design in 4 replications, both in field soil and sand in pot. Results show that temperature, ecotype and their interaction have significant effects (p>0.01) on seed solute electrical conductivity in all three seed incubation duration as well as electrolyte leakage rate and EC test which carried out in 25°C after 24 hour of incubation gives the most rapid prediction of alfalfa seed vigor.