Effect of Deteriorated Seed Soaking with Different Concentrations of Gibberellin (GA3) on Germination and Seedling Growth of Two Oat (Avena sativa L.) Cultivars

A factorial experiment with two factors was carried out at the Seed Technology Lab., College of Agriculture, University Baghdad in 2018 order to study effect seed priming gibberellic acid (GA3) (0, 100, 300 and 500 mgL-1) on germination seedling growth deteriorated oat cultivars (Shifaa, Shofan11). The complete randomized design used four replications. results showed that cultivars, soaking different concentrations GA3 their interactions had a significant studied traits. Shofan11, (500 mg L-1) interaction gave highest values ratio (74.1, 85 85%), lengths radical (7, 8.5 8.6 cm) plumule (9.3, 10.8 10.9 cm), fresh (71.95, 74.74 74.76 mg) dry (18.41, 23.14 25.07 weights vigour index (1270.2, 1644 1655.5), respectively. It can be concluded led increasing improved oat.