Gibberellic acid and its role in the development and growth indices of Deteriorated Cotton seeds varamin variety

Document Type : Research Paper

Authors

1 M.Sc student of Seed Science and Technology, Dept of Agronomy and Plant Breeding, Faculty of Agriculture,University of Birjand

2 Assistant Prof Dept of Agronomy and Plant Breeding, Faculty of Agriculture,University of Birjand

3 Assistant Prof. Dept. of Plant Production Gonbad University, Gonbad, Iran

4 Phd student of Agronomy, Department of plant production, Gonbad University, Gonbad, Iran,

Abstract

Abstract
Deterioration of seeds is one of the important factors in reducing seeds vigor and limit germination. In order to investigate the effect of gibberellic acid hormone on recovery of seeds, and seedling growth in Varamin cotton seed. The experiment was done randomly three times. The experimental sets consisted of two decline levels (48 and 96 hours) with witness and 2 dense levels of gibberellic acid hormone (500 and 1000 PPM) with witness, and the treatment of gibberellic acid hormone was completed in 3 styles (before deterioration, after deterioration and before and after the deterioration. The results showed that the combination of treatments at 500 PPM without deterioration indicated that plumule length, root length, dry root weight, the amount of seed reserves, efficient use of reservoir seed, seed fraction of the resources consumedhad the best treatment. In the prime applying experiment before deterioration, in 500 PPM density with rate and uniformity of germination, D10, D90, plumlule length, root length, dry root weight, dry plumule weight, usage amount of reserves, effective use of resources, consumption and seed fraction, had the bestresult; and at 1000 PPM level the percentage of germination, demonstrated the highest improvement. Finally, in general we can say that gibberellic acid can recover deteriorated seeds.

Keywords


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