Effect of priming auxin and gibberellic acid hormone on reducing the deterioration of corn seed (K.S.C 704)

Subject Areas :

Hesam  Afsharnaderi ¹ (Department of Agronomy, Varamin Branch, Islamic Azad University, Varamin - Pishva, Varamin-Tehran, Iran)
Pourangh  kasraie ² (Department of Agronomy, Faculty of Agriculture, Islamic Azad University rector Varamin, Tehran, Iran)
meysam  oveysi ³ (Department of Agronomy, Varamin Branch, Islamic Azad University, Varamin - Pishva, Varamin-Tehran, Iran)

Received: 2016-05-01 Accepted : 2017-01-09 Published : 2017-02-19

Keywords: germination, Zea mays, Seed deterioration, auxin and Gibberelic acid,

Abstract :

The effect of priming hormone auxin and gibberellic acid on seed germination characteristics of maize single cross 704 was prepared crumbling Institute of Agricultural Research, Faculty of Agriculture, Islamic Azad University of Varamin leader laboratory for experiments in completely randomized design 4 replications. Treatments, including treatment with aged corn at three levels (0, 7 and 14 days), priming hormone auxin treatment at four levels (0, 50, 100 and 150ppm) and gibberellic priming treatments at four levels (0, 200, 400 and 600 ppm) were considered. Traits in the study were: germination percentage, average daily rate of germination, vigor, average acceleration of germination, root length, shoot length, germination index, seedling dry weight, cold test, The electrical conductivity before and after priming, vertical index seedling vigor, root to shoot ratio and average germination time. The table showed that the treatments evaluated in terms of significant differences (at 0.01 and 0.05) is established and the comparison of the attributes evaluated in terms of rates in different groups a. As well as Aged corn seed treatments, the lowest average in comparison with control in most of the traits that Seed deterioration has a negative impact on germination traits. On the other hand, the hormones auxin and gibberellic acid pretreatment, the opposite effect in some traits have shown and in general these hormones increase resistance to cold and the growth of root and shoot of corn were effective. As the figures also showed that, as the second level of GA was effective in most of the traits.